Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma
The thermal desorption experiments were carried out to study the process of helium outgassing from the stainless steel 12Cr18Ni10Ti after exposure to a steady state glow discharge (GD) plasma in He atmosphere. The currentvoltage characteristics in different plasma regimes have been measured and esti...
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2021
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| Cite this: | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma / G.P. Glazunov, M.N. Bondarenko, A.L. Konotopskiy, I.E. Garkusha, S.M. Maznichenko, I.K. Tarasov // Problems of Atomic Science and Technology. — 2021. — № 5. — С. 32-36. — Бібліогр.: 15 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859724207503441920 |
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| author | Glazunov, G.P. Bondarenko, M.N. Konotopskiy, A.L. Garkusha, I.E. Maznichenko, S.M. Tarasov, I.K. |
| author_facet | Glazunov, G.P. Bondarenko, M.N. Konotopskiy, A.L. Garkusha, I.E. Maznichenko, S.M. Tarasov, I.K. |
| citation_txt | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma / G.P. Glazunov, M.N. Bondarenko, A.L. Konotopskiy, I.E. Garkusha, S.M. Maznichenko, I.K. Tarasov // Problems of Atomic Science and Technology. — 2021. — № 5. — С. 32-36. — Бібліогр.: 15 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The thermal desorption experiments were carried out to study the process of helium outgassing from the stainless steel 12Cr18Ni10Ti after exposure to a steady state glow discharge (GD) plasma in He atmosphere. The currentvoltage characteristics in different plasma regimes have been measured and estimation of He ions energy has been made. Measurements of He release from the stainless steel probes showed the saturation of probe surface with He after the fluencies of ~ 4⋅10¹⁹ ion/cm². The value of He outgassing strongly depends on the regime of GD plasma: pressure of work gas, discharge voltage, etc. Several maximums, including the maximum at the temperature of 100…150 °C, were registered in the He desorption curves that indicated different He atom states on the surface and in the nearest surface bulk. Physical mechanisms of such He outgassing are discussed.
Проведені термодесорбційні експерименти по вивченню процесу виділення гелію з нержавіючої сталі 12Х18Н10Т після дії плазми стаціонарного тліючого розряду в атмосфері He. Зміряні вольт-амперні характеристики в різних режимах плазми, і проведена оцінка енергії іонів He. Вимірювання газовиділення He з нержавіючої сталі методом імпульсної термодесорбції показали, що спостерігається насичення поверхні зонда гелієм при дозах ~ 4⋅10¹⁹ іон/см². Величина швидкості десорбції He сильно залежить від режиму плазми: тиску робочого газу, напрузі розряду і т.д. На кривих десорбції He зареєстровано кілько максимумів, включаючи максимум при 100…150 °C, що вказує на різні стани перебування атомів He на поверхні і в приповерхневому об'ємі. Обговорюються фізичні механізми такої поведінки газовиділення He.
Проведены термодесорбционные эксперименты по изучению процесса выделения гелия из нержавеющей стали 12Х18Н10Т после воздействия плазмы стационарного тлеющего разряда в атмосфере He. Измерены вольт-амперные характеристики в различных режимах, и произведена оценка энергии ионов He. Измерения выхода He из нержавеющей стали методом импульсной термодесорбции показали, что наблюдается насыщение поверхности зонда гелием при дозах ~ 4⋅10¹⁹ ион/см². Величина газовыделения He сильно зависит от режима плазмы: давления рабочего газа, напряжения разряда и т.д. На кривых десорбции He зарегистрирован ряд максимумов, включая максимум при температуре 100…150 °C, указывающих на различные состояния атомов He на поверхности и в приповерхностном объеме. Обсуждаются физические механизмы такого характера газовыделения He.
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| first_indexed | 2025-12-01T10:55:50Z |
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ISSN 1562-6016. PASТ. 2021. №5(135), p. 32-36.
https://doi.org/10.46813/2021-135-032
UDC 621.039.535.33
HELIUM RELEASE FROM 12Cr18Ni10Ti STAINLESS STEEL
AFTER IMPACT OF STEADY STATE GLOW DISCHARGE He PLASMA
G.P. Glazunov, M.N. Bondarenko, A.L. Konotopskiy, I.E. Garkusha,
S.M. Maznichenko, I.K. Tarasov
National Science Center “Kharkov Institute of Physics and Technology”,
Institute of Plasma Physics, Kharkiv, Ukraine
E-mail: glazunov@ipp.kharkov.ua
The thermal desorption experiments were carried out to study the process of helium outgassing from the stainless
steel 12Cr18Ni10Ti after exposure to a steady state glow discharge (GD) plasma in He atmosphere. The current-
voltage characteristics in different plasma regimes have been measured and estimation of He ions energy has been
made. Measurements of He release from the stainless steel probes showed the saturation of probe surface with He
after the fluencies of ~ 410
19
ion/cm
2
. The value of He outgassing strongly depends on the regime of GD plasma:
pressure of work gas, discharge voltage, etc. Several maximums, including the maximum at the temperature of
100…150 °C, were registered in the He desorption curves that indicated different He atom states on the surface and
in the nearest surface bulk. Physical mechanisms of such He outgassing are discussed.
INTRODUCTION
Glow discharge plasma cleaning (GDC) in
hydrogen, helium, argon atmosphere [1–5] is one of the
common wall conditioning procedures in plasma
devices. However, along with effective cleaning of the
surface from impurities, this method has a number of
disadvantages: sputtering and over-sputtering of
materials, adsorption and subsequent release of plasma-
forming (discharge) gases [5], etc. The discharge gases
adsorbed by the wall or by other plasma facing
components can then release and serve as an undesirable
additive during plasma experiments. Earlier, a
completely different He desorption behavior for
different metals after GDC in He was observed in work
[3]. Using thermal desorption spectrometer, several
maximums in the curve of He desorption from stainless
steel (SUS316L) were registered. This indicated that
adsorbed He atoms could be in different states with
different binding energies. The nature of desorption
process for trapped gases is not fully understood yet.
Therefore, the additional information in this field will
be useful. Using a thermal desorption pulse method, we
carried out the experiments in the small plasma device
DSM-1 to study He retention and release from the
stainless steel 12Cr18Ni10Ti (a material the vacuum
chamber of Uragan-2M stellarator was made of) after
the impact of helium GD plasma.
1. EXPERIMENTAL SETUP
The DSM-1 plasma facility (diagnostic stand of
materials) was described in detail in [6, 7]. The scheme
of the experimental setup is shown in Fig. 1. The
vacuum chamber is made of the stainless steel
12Cr18Ni10Ti (hereinafter referred to as SS), unheated,
and assembled with vacuum rubber and Viton seals. The
volume of the chamber is 0.35 m
3
, the plasma facing
wall area is about 0.5 m
2
. The chamber is pumped by a
TMP-500 turbomolecular pump (500 l/s pumping
speed) and a NVR-5 (5 l/s) fore vacuum pump.
Fig. 1. Scheme of the DSM-1 device
The samples for studies were similar to the thermal
desorption probes described in [8–10] used for the
measurements of the stainless steel outgassing rate and
the number of gas monolayers on its surface in the
Uragan-2M stellarator. They are made of 12Cr18Ni10Ti
SS in form of a plate with dimensions of
200x10x0.3 mm. Before placing the samples in the
vacuum chamber they were cleaned with such
procedures: fine sandpaper cleaning, wiping with
special fabric wetted in clean branded gasoline, drying,
wiping with special fabric wetted in 96% ethanol,
drying. The probe was placed on the wall of the DSM-1
vacuum chamber (see Fig. 1). One end of the probe was
grounded (connected to the wall, which is a cathode)
and another one was connected to a power supply to
provide heat of a sample up to the temperature of
700 C in stationary or pulse regimes. The anodes (see
Fig. 1) were two symmetrically placed discs made of the
polished stainless steel 12Cr18Ni10Ti with a diameter
of 25 mm and a thickness of 1.5 mm.
After being pumped to the ultimate pressure of
~ 210
-6
Torr, the chamber was filled with working gas
helium (99.998 vol.%) injected through the needle valve
leak to provide a work pressure (4.510
-2
…5.610
-3
Torr);
then, a steady state GD was switched on. The regimes of
the GD during GDC were at an applied potential varied
with He pressure within the range of 250…369 V and a
discharge current of 150 mA. The length of time of the
samples exposure to plasma was 2, 6, 12, and 20 h
(fluencies 3.610
19
…3.610
20
ion/cm
2
). The current-
voltage characteristics were measured (Fig. 2) in
different regimes and He ions energy was estimated
(Figs. 3, 4).
Fig. 2. Current-voltage characteristics of GD at
different He pressures
The energy distribution of helium ions was
measured with a method described in [11], using
multigrid analyzer placed at the level of the chamber
wall, which was bombarded with ions. Fig. 3 shows the
energy spectrum of He
+
ions measured at a working gas
pressure 1.610
-2
Torr. With an increase in the working
gas pressure, the maximum of the ion energy
distribution shifts towards lower energies (see Fig. 4).
Then, the sample was remounted from the DSM-1
device. The sputtering yield was measured by the
weight loss method using a VLR-200 balance, similar to
that described in [7]. Erosion coefficient of the SS
2KH18N10T was ~ 0.1 at./ion at the discharge voltage
of 320 V. This value of the erosion coefficient
corresponds rather well to the literature data on
sputtering yield of St316 (an analogue of steel
12Cr18Ni10Ti) under He
+
ion bombardment with ion
energy of ~ 100 eV [12, 13]. However, our
measurements showed (see Figs. 3, 4) that the main part
of the He ions has energy lower than 100 eV. The
reason for this discrepancy may be the of a large
number of fast charge-exchange atoms, whose
sputtering yield is similar to that of ions.
After about a 1-hour exposure on the atmosphere,
the SS probe was installed in the special stand GAS
(described in [9]) for the measurements of the total
outgassing rate and He-release (outgassing) rate. The
methods for determining the outgassing rate q of SS and
the number of monolayers N of impurity gases on its
surface is described in detail in [8–10]. It is noteworthy
that after being installed in the stand vacuum vessel, all
SS probes were heated together with the chamber walls
at the temperature of 100…150 C during 1 h. This was
necessary to obtain a good ultimate vacuum
(~2 10
-7
Torr) after opening the chamber to the
atmosphere and to clean a sample surface from
impurities. So, it was important to check whether
helium is desorbed at these temperatures. The value of
outgassing rate is proportional to a pressure change in
the vacuum chamber during pulsed heating of the SS
probe to the temperature of 120…700 °C.
Fig. 3. Energy distribution of He
+
ions reaching the
wall measured at the work gas pressure 1.610
-2
Torr
Fig. 4. Energy distribution of He
+
ions measured at the
work gas pressure 2.810
-2
Torr
The change of a total pressure was measured with
the ionization gauges PMI-10-2 and PMI-2. At the same
time, He partial pressure was measured with mass-
spectrometer MX-7304. In the first case, the rate of gas
release was expressed in (Torr∙l)/(s∙cm
2
). In the second
one, the results are given in the form of time
dependences of the values of the helium ion current (in
arbitrary units). For both cases, a pressure increase
during the sample heating is proportional to the gas
concentration on the metal surface. Therefore, by
measuring the pressure increase during desorption, one
can say about the kinetics of the behavior of helium
under various regimes of GDC. To estimate the
percentage of helium released in relation to the total gas
outgassing, the MX-7304 mass spectrometer was
calibrated according to the data of the PMI-10-2 and
PMI-2 ionization gauges. In Figs. 5–7, the apparatus
curves show the change in the helium pressure in the
measurement chamber of the stand when the sample is
pulsed to the temperatures of 120 °C (see Fig. 5) and
700 °C. For the latter two variants the plots are
presented: with (see Fig. 6) and without (see Fig. 7)
preheating of the sample at the temperature of 120 C.
Fig. 5. He release during SS probe pulse (1 s) heating:
t1 – start heating; t2 – maximum sample temperature is
about 120C, switch off heating
s
Fig. 6. He release during SS probe pulse heating (12 s,
700C) after preheating at 120C: sample temperature
is about t1 – ~120; t2 – ~250; t3 – ~450;
t4 – ~650 °C; t0 – start of heating; ts – switch off heating
Fig. 7. He release during SS probe pulse heating (12 s)
without preheating at 100…150C: t0 – switch on
heating; ts – 700C, switch off heating
2. RESULTS AND DISCUSSION
Figs. 5–7 show that helium release starts at the
temperature lower than 100 С and outgassing rate
increases almost immediately after switching on
heating. The next maximums of He desorption are
observed at the temperatures of 250…300; 450…500,
and 650…700 C. It means that helium is held in the
stainless steel in different states with different activation
energies of desorption. However, in [3], very low
helium release from the SUS316L steel at temperatures
of 150 C was detected after GDC in helium. The
reason may be in the differences in the surface
properties of the studied steels (for example, the degree
of contamination) and in the features of the techniques
and methods.
Low energy He ions and atoms could be trapped
near the metal surface similar to other residual gases
such as water vapor, hydrogen, nitrogen, CO, CO2, etc.,
forming weak bonds with the molecules of these gases
adsorbed in pores and micropores, cracks, and
microcracks on the surface of the chamber material.
Islands of carbides, nitrides, oxides, various films, etc.
can also adsorb some amount of the helium. This helium
has very low desorption energy and can be desorbed
even at the temperature 100 C, as was observed for
graphite in [3]. The stainless steel samples used in our
experiments have another composition and, possibly, a
greater amount of contaminants in the form of carbides,
oxides, carbon films, etc., which leads to the appearance
of a desorption peak at low temperature, unlike data for
the stainless steel SUS316L in work [3]. As Figs. 6, 7
demonstrate, the amount of such He strongly decreases
even after one pulse heating to 120 C. For the full
removal of such helium from the sample surface, the
standard stationary heating at the temperature of
100…150 C of the vacuum chamber together with the
sample during one hour is enough.
Fig. 8. Different zones of helium trapping by wall:
I – low desorption temperatures ~150…300 °С;
II – desorption temperatures ~450…500 °С;
III – desorption temperatures ≥ 650…700 °C
Helium ions with energy 100 eV and fast neutral
He atoms can be implanted in the nearest surface bulk
of metal and can be trapped by different defects and
radiation damages (Fig. 8). Such helium requires more
energy for desorption (450…500 С). And, finally,
during plasma treatment (GDC), part of the implanted
ions can diffuse deep into the metal (for example, by the
mechanism of the formation of complexes with
vacancies [14, 15]). There helium atoms are bound by
lattice defects: vacancies, pores and micropores,
microcracks, etc. To remove such helium, the
temperatures of 650…700 °C and higher are required.
Thus, the processes of trapping and release of
helium from stainless steel are complex, multi-stage,
including a number of sequential and parallel reactions
(absorption, introduction into the volume of metal,
diffusion, desorption, etc.). These processes depend on
many factors: the pressure of the plasma-forming gas,
ion energy, radiation doses, etc. Conventionally, as
Fig. 8 shows, three zones (signed as I, II, and III) of
helium trapping by the metal and, accordingly, three
different energy states during its desorption could be
distinguished.
Fig. 9 shows the rate of outgassing of helium from
the stainless steel when heated to 300 C as a function
of the time of a glow discharge cleaning. It is seen that
saturation occurs at times of more than 10 h (dose
410
19
ion/cm
2
). Importantly, the estimations made on
the basis of simultaneous measurements of the total
pressure and partial pressure of helium showed that
during thermal desorption, e.g., at a temperature of
120 °C (see Fig. 5), quantity of desorbed helium could
be about that for all the rest gases.
Fig. 9. He release during SS probe pulse heating to the
temperature of 300C vs the time of GDC
h
Fig. 10. He release from SS-sample during pulse
heating to the temperature of 500C vs He
pressure GDC
Fig. 10 shows the rate of helium outgassing from SS
samples when heated to 500 C plotted versus the
pressure of the discharge gas during GDC. When the
pressure changes from 5.6∙10
-3
to 4.510
-2
Torr, the
outgassing rate of helium gas from the stainless steel
decreases by a factor of 6. Since the amount of desorbed
gas (outgassing rate) is proportional to its concentration
on the metal surface, one can say that at high pressures
of GDC, SS binds less helium than at low discharge
pressures. This is most likely associated with a decrease
in the ion energy with an increase in the gas pressure.
Fig. 11 gives understanding of the kinetics of He release
at different heating times (number of heat pulses). It can
be seen that the samples treated at high gas pressures are
freed from helium faster than the ones in the lower
pressure regime. We associate this with a change in the
energy spectrum of ions, which, in turn, leads to the
changes in the amount of bound gas, the depth of its
penetration into the metal, etc. So, if we want to have
plasma regime with low He recycling, it is preferable
to carry out GDC at high pressure of discharge gas
(He). But in this case, a decrease in the cleaning
efficiency is possible [5].
Fig. 11 . He outgassing rate of 12Cr18Ni10Ti stainless
steel during its heating to the temperature of 300С vs
number of thermal pulses
3. SUMMARY AND CONCLUSIONS
The thermal desorption experiments were carried out
to study the process of helium release from the stainless
steel 12Cr18Ni10Ti after its exposure to steady state
GD plasma in He atmosphere. The current-voltage
characteristics in different plasma regimes were
measured, and estimation of He ions energy was made.
Measurements of He outgassing from the SS probes by
thermal desorption pulse method showed that the
saturation of the probe surface with He is observed at
rather low fluencies (~ 410
19
ion/cm
2
). The value of He
outgassing strongly depends on the pressure of the work
gas during GDC. In our case, it decreased by a factor of
six with the increase in pressure from 5.6∙10
-3
to
4.510
-2
Torr. Several maximums were registered in the
He thermal desorption curves that indicated different He
atom states on the surface and in the nearest surface
bulk. Noticeable desorption of helium at the temperature
of ~ 100 C turned out to be different from the data for
the stainless steel SUS316L reported earlier in [3]. The
reason may be in the differences in the surface
properties of the studied steels (for example, the degree
of contamination) and in the features of the techniques
and methods.
REFERENCES
1. H.F. Dylla, S.A. Cohen, S.M. Rossnagel, et al.
Glow discharge conditioning of the PDX vacuum vessel
// J. Vac. Sci. Technol. 1980, v. 17 (1), p. 286-290.
2. H. Suzuki, N. Ohyabu, A. Komori, et al. The
LHD Experimental Group. Behavior of helium gas in
the LHD vacuum chamber // Journal of Nuclear
Materials. 2003, v. 313-316, p. 297-301.
3. Y. Kubota, N. Noda, A. Sagara, et al. Inves-
tigation of the trapped helium and hydrogen ions in
plasma facing materials for LHD using thermal
desorption spectrometer and alternating glow discharge
cleanings // Journal of Nuclear Materials. 2003,
v. 313-316, p. 239-244.
4. A. Spring, R. Brakel, H. Niedermeyer. Wall
conditioning for Wendelstein 7-X by glow discharge //
Fusion Engineering and Design. 2003, v. 66-68, p. 371-
375.
5. R.P. Govier and G.M. McCracken. Gas
Discharge Cleaning of Vacuum Surfaces // Journal of
Vacuum Science & Technology. 1970, v. 7, p. 552;
doi: 10.1116/1.1315874.
6. G.P. Glazunov, M.N. Bondarenko, A.L. Kono-
topskiy, E.D. Volkov. Erosion behavior of tungsten
coatings in magnetron type discharges with hot cathode
// Problems of Atomic Science and Technology. Series
“Plasma Physics”. 2008, N 6(58), p. 107-109.
7. G.P. Glazunov, V.E. Moiseenko, S.M. Mazni-
chenko, et al. Vacuum-plasma properties of stainless
steel after impact of combined glow-microwave
discharges in argon atmosphere // Problems of Atomic
Science and Technology. Series “Plasma Physics”.
2021, N 1(131), p. 50-58.
8. G.P. Glazunov, V.K. Pashnev. A method for
diagnosing the state of the surface of the vacuum
chamber of the torsatron Uragan-2M // Physical surface
engineering. 2012, v. 10, N 2, p. 173-176.
9. G.P. Glazunov, D.I. Baron, V.E. Moiseenko, et
al. Characterization of wall conditions in Uragan-2M
stellarator using stainless steel thermal desorption probe
// Fusion Engineering and Design. 2018, v. 137, p. 196-
201.
10. G.P. Glazunov, D.I. Baron, M.N. Bondarenko,
et al. In situ quantification of plasma facing surface
conditions in the Uragan-2M torsatron // Problems of
Atomic Science and Technology. Series “Plasma
Physics”. 2018, N 1(107), p. 12-16.
11. E.A. Bakulin, E.Stepin, and V.V. Shcherbinina.
Application of the delay method for plasma research //
Journal of Technical Physics. 1969, v. 39, N 1, p. 114-
121.
12. W. Eckstein, C. Garsia-Rosales, J. Roth,
W. Offenberger. Sputtering Data. IPP, Garching,
Munchen, 1993, p. 342.
13. Y. Yamamyra and H. Taware. Energy
dependence of ion-induced sputtering yields from
monoatomic solids at normal incidence: Research report
NIFS, Data series, NIFS-DATA-23, 1995, p. 114.
14. D.J. Reed. A review of recent theoretical
developments in the understanding of the migration of
helium in metals and its interaction with lattice defects
// Rad. Effects. 1977, v. 31, p. 129-147.
15. A.P. Zakharov. Hydrogen interaction with
radiation damages in metals: Dissertation of the doctor
of physical and mathematical sciences. M., 1980, 372 p.
Article received 01.04.2021
ГАЗОВЫДЕЛЕНИЕ ГЕЛИЯ ИЗ НЕРЖАВЕЮЩЕЙ СТАЛИ 12Х18Н10Т
ПОСЛЕ ОБРАБОТКИ ПЛАЗМОЙ СТАЦИОНАРНОГО ТЛЕЮЩЕГО РАЗРЯДА
В АТМОСФЕРЕ ГЕЛИЯ
Г.П. Глазунов, М.Н. Бондаренко, А.Л. Конотопский, И.Е. Гаркуша, С.М. Мазниченко, И.К. Тарасов
Проведены термодесорбционные эксперименты по изучению процесса выделения гелия из нержавеющей
стали 12Х18Н10Т после воздействия плазмы стационарного тлеющего разряда в атмосфере He. Измерены
вольт-амперные характеристики в различных режимах, и произведена оценка энергии ионов He. Измерения
выхода He из нержавеющей стали методом импульсной термодесорбции показали, что наблюдается
насыщение поверхности зонда гелием при дозах ~ 410
19
ион/см
2
. Величина газовыделения He сильно
зависит от режима плазмы: давления рабочего газа, напряжения разряда и т. д. На кривых десорбции He
зарегистрирован ряд максимумов, включая максимум при температуре 100…150 C, указывающих на
различные состояния атомов He на поверхности и в приповерхностном объеме. Обсуждаются физические
механизмы такого характера газовыделения He.
ГАЗОВИДІЛЕННЯ ГЕЛІЮ З НЕРЖАВІЮЧОЇ СТАЛІ 12Х18Н10Т ПІСЛЯ ОБРОБКИ
ПЛАЗМОЮ СТАЦІОНАРНОГО ТЛІЮЧОГО РОЗРЯДУ В АТМОСФЕРІ ГЕЛІЮ
Г.П. Глазунов, М.М. Бондаренко, О.Л. Конотопський, І.Є. Гаркуша, С.М. Мазнiченко, І.К. Тарасов
Проведені термодесорбційні експерименти по вивченню процесу виділення гелію з нержавіючої сталі
12Х18Н10Т після дії плазми стаціонарного тліючого розряду в атмосфері He. Зміряні вольт-амперні
характеристики в різних режимах плазми, і проведена оцінка енергії іонів He. Вимірювання газовиділення
He з нержавіючої сталі методом імпульсної термодесорбції показали, що спостерігається насичення
поверхні зонда гелієм при дозах ~ 410
19
іон/см
2
. Величина швидкості десорбції He сильно залежить від
режиму плазми: тиску робочого газу, напрузі розряду і т. д. На кривих десорбції He зареєстровано кілько
максимумів, включаючи максимум при 100…150 °C, що вказує на різні стани перебування атомів He на
поверхні і в приповерхневому об'ємі. Обговорюються фізичні механізми такої поведінки газовиділення He.
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| id | nasplib_isofts_kiev_ua-123456789-195439 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-01T10:55:50Z |
| publishDate | 2021 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Glazunov, G.P. Bondarenko, M.N. Konotopskiy, A.L. Garkusha, I.E. Maznichenko, S.M. Tarasov, I.K. 2023-12-05T10:28:46Z 2023-12-05T10:28:46Z 2021 Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma / G.P. Glazunov, M.N. Bondarenko, A.L. Konotopskiy, I.E. Garkusha, S.M. Maznichenko, I.K. Tarasov // Problems of Atomic Science and Technology. — 2021. — № 5. — С. 32-36. — Бібліогр.: 15 назв. — англ. 1562-6016 DOI: https://doi.org/10.46813/2021-135-032 https://nasplib.isofts.kiev.ua/handle/123456789/195439 621.039.535.33 The thermal desorption experiments were carried out to study the process of helium outgassing from the stainless steel 12Cr18Ni10Ti after exposure to a steady state glow discharge (GD) plasma in He atmosphere. The currentvoltage characteristics in different plasma regimes have been measured and estimation of He ions energy has been made. Measurements of He release from the stainless steel probes showed the saturation of probe surface with He after the fluencies of ~ 4⋅10¹⁹ ion/cm². The value of He outgassing strongly depends on the regime of GD plasma: pressure of work gas, discharge voltage, etc. Several maximums, including the maximum at the temperature of 100…150 °C, were registered in the He desorption curves that indicated different He atom states on the surface and in the nearest surface bulk. Physical mechanisms of such He outgassing are discussed. Проведені термодесорбційні експерименти по вивченню процесу виділення гелію з нержавіючої сталі 12Х18Н10Т після дії плазми стаціонарного тліючого розряду в атмосфері He. Зміряні вольт-амперні характеристики в різних режимах плазми, і проведена оцінка енергії іонів He. Вимірювання газовиділення He з нержавіючої сталі методом імпульсної термодесорбції показали, що спостерігається насичення поверхні зонда гелієм при дозах ~ 4⋅10¹⁹ іон/см². Величина швидкості десорбції He сильно залежить від режиму плазми: тиску робочого газу, напрузі розряду і т.д. На кривих десорбції He зареєстровано кілько максимумів, включаючи максимум при 100…150 °C, що вказує на різні стани перебування атомів He на поверхні і в приповерхневому об'ємі. Обговорюються фізичні механізми такої поведінки газовиділення He. Проведены термодесорбционные эксперименты по изучению процесса выделения гелия из нержавеющей стали 12Х18Н10Т после воздействия плазмы стационарного тлеющего разряда в атмосфере He. Измерены вольт-амперные характеристики в различных режимах, и произведена оценка энергии ионов He. Измерения выхода He из нержавеющей стали методом импульсной термодесорбции показали, что наблюдается насыщение поверхности зонда гелием при дозах ~ 4⋅10¹⁹ ион/см². Величина газовыделения He сильно зависит от режима плазмы: давления рабочего газа, напряжения разряда и т.д. На кривых десорбции He зарегистрирован ряд максимумов, включая максимум при температуре 100…150 °C, указывающих на различные состояния атомов He на поверхности и в приповерхностном объеме. Обсуждаются физические механизмы такого характера газовыделения He. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Physics of radiation damages and effects in solids Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma Газовиділення гелію з нержавіючої сталі 12Х18Н10Т після обробки плазмою стаціонарного тліючого розряду в атмосфері гелію Газовыделение гелия из нержавеющей стали 12Х18Н10Т после обработки плазмой стационарного тлеющего разряда в атмосфере гелия Article published earlier |
| spellingShingle | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma Glazunov, G.P. Bondarenko, M.N. Konotopskiy, A.L. Garkusha, I.E. Maznichenko, S.M. Tarasov, I.K. Physics of radiation damages and effects in solids |
| title | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma |
| title_alt | Газовиділення гелію з нержавіючої сталі 12Х18Н10Т після обробки плазмою стаціонарного тліючого розряду в атмосфері гелію Газовыделение гелия из нержавеющей стали 12Х18Н10Т после обработки плазмой стационарного тлеющего разряда в атмосфере гелия |
| title_full | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma |
| title_fullStr | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma |
| title_full_unstemmed | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma |
| title_short | Helium release from 12Cr18Ni10Ti stainless steel after impact of steady-state glow discharge helium plasma |
| title_sort | helium release from 12cr18ni10ti stainless steel after impact of steady-state glow discharge helium plasma |
| topic | Physics of radiation damages and effects in solids |
| topic_facet | Physics of radiation damages and effects in solids |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/195439 |
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