Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility
The paper presents results of experimental research on the interaction of a pulsed plasma-ion stream with a tungsten (W) target. The pulsed hydrogen plasma was produced within the RPI-IBIS (Multi-Rod Plasma Injector) facility at IPJ in Swierk. Measurements were carried out by means of optical spec...
Saved in:
| Published in: | Вопросы атомной науки и техники |
|---|---|
| Date: | 2006 |
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2006
|
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/82151 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility / E. Skladnik-Sadowska, K. Malinowski, M.J. Sadowski, K. Czaus, A. Marchenko, A.V. Tsarenko // Вопросы атомной науки и техники. — 2006. — № 6. — С. 135-137. — Бібліогр.: 8 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859616497092001792 |
|---|---|
| author | Skladnik-Sadowska, E. Malinowski, K. Sadowski, M.J. Czaus, K. Marchenko, A. Tsarenko, A.V. |
| author_facet | Skladnik-Sadowska, E. Malinowski, K. Sadowski, M.J. Czaus, K. Marchenko, A. Tsarenko, A.V. |
| citation_txt | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility / E. Skladnik-Sadowska, K. Malinowski, M.J. Sadowski, K. Czaus, A. Marchenko, A.V. Tsarenko // Вопросы атомной науки и техники. — 2006. — № 6. — С. 135-137. — Бібліогр.: 8 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The paper presents results of experimental research on the interaction of a pulsed plasma-ion stream with a tungsten
(W) target. The pulsed hydrogen plasma was produced within the RPI-IBIS (Multi-Rod Plasma Injector) facility at IPJ
in Swierk. Measurements were carried out by means of optical spectroscopy and corpuscular diagnostic techniques. For
experiments with the W-target the operational conditions (so-called PID mode) were chosen when a clean hydrogen
plasma stream was generated. Attention was paid to the identification of WI and WII spectral lines.
|
| first_indexed | 2025-11-28T21:36:44Z |
| format | Article |
| fulltext |
Problems of Atomic Science and Technology. 2006, 6. Series: Plasma Physics (12), p. 135-137 135
PRELIMINARY STUDY OF PLASMA STREAM INTERACTION
WITH TUNGSTEN TARGET WITHIN RPI-IBIS FACILITY
E. Skladnik-Sadowska 1, K. Malinowski 1, M.J. Sadowski 1, K. Czaus 1,
A. Marchenko, 2,
1 The Andrzej Soltan Institute for Nuclear Studies (IPJ), 05-400 Otwock-Swierk, Poland,
e-mail: eskladnik@ipj.gov.pl;
2 Institute of Plasma Physics, NSC KIPT, Kharkov, Ukraine,
e-mail: marchenkoak@kipt.kharkov.ua
The paper presents results of experimental research on the interaction of a pulsed plasma-ion stream with a tungsten
(W) target. The pulsed hydrogen plasma was produced within the RPI-IBIS (Multi-Rod Plasma Injector) facility at IPJ
in Swierk. Measurements were carried out by means of optical spectroscopy and corpuscular diagnostic techniques. For
experiments with the W-target the operational conditions (so-called PID mode) were chosen when a clean hydrogen
plasma stream was generated. Attention was paid to the identification of WI and WII spectral lines.
PACS: 52.50.Dg, 52.40.Hf, 52.70.Kz, 52.70.Nc
1. INTRODUCTION
The pulsed plasma streams, which are produced by
coaxial multi-rod injectors (so-called RPI- or
IONOTRON-type facilities), have been studied at IPJ for
many years [1-3]. The studies performed during recent
two years have shed some new light on the operation of
such devices [4-7]. Detailed spectroscopic- and
corpuscular-measurements appeared also to be of
importance for various applications of such plasma
facilities. In general the spectroscopic studies deliver
important information about dynamics and parameters of
the investigated plasma streams, and they are of primary
importance for research on the interaction of plasma
streams with different targets. The main aim of this paper
was to present results of the recent experimental studies.
2. EXPERIMENTAL SET-UP
The recent studies have been performed mainly within
the RPI-IBIS facility [5], which was powered from a
current pulse generator charged to U0 = 30 kV, W0=33 kJ.
The operational mode of the device was varied by
changes of a time delay (τ) between the gas puffing and
the application of a high-voltage pulse. A scheme of this
facility is shown in Fig.1
Fig.1. RPI-type facility and its operation modes
The location of the pure tungsten target, which was
placed at a distance of about 20 cm from the electrodes
outlet, is shown in Fig.2. Spectroscopic measurements of
tungsten plasma, which was produced during the
interaction of a hydrogen plasma (mostly protons) stream
with the tungsten target, were performed by means of the
Mechelle®900 optical spectrometer. It was able to record
optical spectra in the wavelength range from about
300 nm to 1100 nm, with expositions varied from 100 ns
up to 50 ms.
Fig.2. Picture of the ends of multi-rod electrodes and the
tungsten target placed inside the RPI-IBIS chamber
In order to determine the spatial structure of the
produced proton streams we applied a miniature ion-
pinhole camera equipped with exchangeable nuclear track
detectors (NTD). An analysis of the mass- and energy-
spectrum of the proton streams was performed by means
of a Thomson-type spectrometer.
3. SPECTROSCOPY OF PLASMA-ION
STREAMS
During the spectroscopic studies particular attention
was paid to observations of the Balmer spectral lines of
the working gas, i.e. Dα – 656.10 nm, Dβ – 486.029 nm
and Dγ – 433.298 nm. Before the insertion of the tungsten
target into the RPI-IBIS vacuum chamber, we determined
the operational gas conditions (PID mode), when a clean
hydrogen plasma stream was generated. To study
influence of the initial gas conditions, the detailed
spectroscopic measurements were performed at different
time delays (τ) between the gas puffing and the
application of the voltage (current) pulse. A dependence
of intensities of the observed spectral line on the time
delay values is presented in Fig. 3.
The described measurements confirmed a strong
dependence of the basic plasma parameters on the initial
A.V. Tsarenko 2
mailto:eskladnik@ipj.gov.pl
mailto:marchenkoak@kipt.kharkov.ua
136
gas conditions, which were varied by changes of the delay
time (τ). The selection of the optimal operational
conditions could be performed on the basis of the
observation of the selected spectral lines.
Fig.3. Optical spectra of the pulsed plasma streams
emitted from the IBIS-RPI facility, which were recorded
at z = 20 cm and exposition of 100 µs (vs time delay) and
5 µs (vs time of discharge) for shots performed at
U0 = 29 kV, W0 = 33 kJ, and H2–puffing
On the basis of the obtained spectra it was possible to
estimate values of the electron density and temperature of
the hydrogen plasma streams, as shown in Fig.4.
Fig.4. Average values of the electron density and
temperature, as estimated from optical measurements
performed at z=10 cm and different operational modes
It was observed that for time delays longer than
160 µs the RPI-IBIS facility generated the clean hydrogen
(proton) plasma streams, and such conditions were chosen
for experiments with the tungsten target. The pure
tungsten target of dimensions 50 x 50 mm was usually
placed at a distance of z = 20 cm from the electrode outlet
(as described above). Using the Mechelle®900
spectrometer we recorded and identified the tungsten
spectral lines, as shown in Figs. 5 and 6.
Fig.5 Portion of the spectrum (360…405 nm) recorded at
the exposition time equal to equal to 6 µs, which shows
distinct tungsten (WI and WII) spectral lines
Fig.6 Intensities of the spectral lines measured within the
RPI-IBIS experiment for a chosen spectrum portion (near
the Dβ line) at the exposition time equal to 6 µs. For a
comparison the spectrum of a laser-produced tungsten
plasma plum [8] is shown on the top
To prove that the recorded spectral lines were emitted
from tungsten plasma, we performed spectroscopic
measurements also for shots without any target. Some
examples of the recorded spectra are shown in Fig.7.
4. MASS- AND ENERGY-ANALYSIS OF IONS
In order to get information about mass- and energy-
spectrum of ions, time-integrated measurements of the
investigated plasma-ion streams were performed with a
Thomson-type spectrometer adjusted along the z-axis. It was
equipped with the input ion-acceleration system and
exchangeable PM-355 nuclear-track detectors. The Thomson
parabolas, which were obtained on the track detectors after
their appropriate etching, have been analyzed with an optical
microscope. To perform an accurate analysis of the ion
tracks, the use was made of an automatic system consisted of
a CCD camera coupled with a fast PC (Pentium II) equipped
with the Image-Pro-Plus software. The energy distributions
of ions, i.e. deuterons obtained from shots performed with
the deuterium puffing at different operational modes (defined
by various time delays), are shown in Fig. 8.
140 160 180 200
1
2
3
Mo + H2
U0= 30 kV, texp= 10 µs
Te
Nemax
<Ne>
T e, e
V
delay time, µs
N
e, 1
016
cm
-3
RPI-IBIS-60
0
2
4
6
137
460 470 480 490 500 510
0
50
1 0 0
R P I-IB IS -6 0
t im e de lay of valve, τ = 160 µ s (PID m od e)
w itho u t ta rg et
z = 2 0 c m
t e xp . = 5 u s (0 -5 u s)
in
te
ns
ity
, a
u
w a vele n g th , n m
s h o t 06 0 5 2 2/2 2
H -b eta
460 470 480 490 500 510
0
50
100
w av elen gth , nm
C II
t ex p. = 5 us (5-10us)
in
te
ns
ity
, a
u
H -be ta
sho t 0 605 22/23
Fig.7. Spectral lines observed for hydrogen shots within
the RPI-IBIS facility without any target, at the same
observation plane (z = 20 cm) and different phases of the
discharge (0..5 µs and 5..10 µs)
2 4 6 8
10
20 40 60 80
100
200 400 600
0,0
0,5
1,0
1,5
2,0
2,5
τ=150µs
τ=170µs, PID-mode
nu
m
be
r o
f d
eu
te
ro
n,
c
m
-2
sh
ot
-1
energy of deuteron, keV
x106
τ =130µs, DPE-mode
RPI-IBIS
Fig.8. Energy spectra of deuterons obtained at different
gas condition. The bars show experimental errors
On the basis of the ion energy spectra, obtained from
various shots performed with the pure deuterium puffing
and different time delays (τ), it was possible to determine
the average energy values and total numbers of the
emitted deuterons.
5. SUMMARY AND CONCLUSIONS
The results of this work can be summarized as follows:
• The described experiments, which were performed
within the RPI-IBIS facility equipped with the multi-rod
plasma injector, concerned the interaction of pulsed
plasma streams with tungsten targets.
• The chosen operation regime of the injector (PID mode)
ensured the generation of a clean hydrogen-plasma
stream. Average energy of protons decreased from
about 70 keV to a few keV with an increase in the gas-
puffing delay (τ). The total number of protons was the
highest at time delays τ = 160…190 µs.
• For the first time, using a Mechelle-900 optical
spectrometer, we recorded distinct spectral lines (WI
and WII) emitted from tungsten plasma produced during
the interaction of the hydrogen plasma stream with the
tungsten target.
The obtained results, i.e. the optical spectra and other
characteristics, have demonstrated applicability of the
RPI-IBIS facility for further research on the interaction of
plasma streams with tungsten targets, e.g. those of
particular interest for a future fusion reactor.
REFERENCES
1. M. Gryzinski, J. Nowikowski, M. Sadowski,
S. Suckewer// Nukleonika. 1968, v.13, p. 719.
2. E. Skladnik-Sadowska, J. Baranowski, M. Gryzinski,
J. Langner, M. Sadowski // J. Physique. 1982, v.43, p. 715.
3. J. Baranowski, M. Sadowski, E. Skladnik-Sadowska,
J. Stanislawski, J. Zebrowski //ECA. 1998, v. 22C, p. 1662.
4. J. Baranowski, K. Czaus, M. Sadowski, E. Sk adnik-
Sadowska, A.Tsarenko // ECA. 2000, v. 24B, p. 848.
5. E. Skladnik-Sadowska, J. Baranowski, K. Czaus,
M.J. Sadowski, A. Tsarenko // Probl. Atom. Sci. & Techn.
Ser.:Plasma Physics (6). 2000, N6, p. 169.
6. J. Baranowski, E. Skladnik-Sadowska, K. Czaus,
M. Sadowski// Proc. PLASMA-2001, Warsaw, 2001, P8.3.
7. E. Skladnik-Sadowska, J. Baranowski, K. Czaus et al.//
Proc. 20th SPPT, Prague, 2002; Czech. J. Phys. 2002,
v. 52, Suppl. D, D182.
8. M. Sadowski et. al.// Proc. 22th SPPT (Prague 2006);
Czech. J. Phys. 2006, v.56, Suppl. B, B550-556.
. , . , . , . , . ,
. ( )
.
. ,
. WI WII.
. , . , . , . , . ,
. ( )
. .
, .
WI WII.
.
.
|
| id | nasplib_isofts_kiev_ua-123456789-82151 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-11-28T21:36:44Z |
| publishDate | 2006 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Skladnik-Sadowska, E. Malinowski, K. Sadowski, M.J. Czaus, K. Marchenko, A. Tsarenko, A.V. 2015-05-25T15:56:47Z 2015-05-25T15:56:47Z 2006 Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility / E. Skladnik-Sadowska, K. Malinowski, M.J. Sadowski, K. Czaus, A. Marchenko, A.V. Tsarenko // Вопросы атомной науки и техники. — 2006. — № 6. — С. 135-137. — Бібліогр.: 8 назв. — англ. 1562-6016 PACS: 52.50.Dg, 52.40.Hf, 52.70.Kz, 52.70.Nc https://nasplib.isofts.kiev.ua/handle/123456789/82151 The paper presents results of experimental research on the interaction of a pulsed plasma-ion stream with a tungsten (W) target. The pulsed hydrogen plasma was produced within the RPI-IBIS (Multi-Rod Plasma Injector) facility at IPJ in Swierk. Measurements were carried out by means of optical spectroscopy and corpuscular diagnostic techniques. For experiments with the W-target the operational conditions (so-called PID mode) were chosen when a clean hydrogen plasma stream was generated. Attention was paid to the identification of WI and WII spectral lines. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Plasma dynamics and plasma wall interaction Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility Article published earlier |
| spellingShingle | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility Skladnik-Sadowska, E. Malinowski, K. Sadowski, M.J. Czaus, K. Marchenko, A. Tsarenko, A.V. Plasma dynamics and plasma wall interaction |
| title | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility |
| title_full | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility |
| title_fullStr | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility |
| title_full_unstemmed | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility |
| title_short | Preliminary study of plasma stream interaction with tungsten target within RPI-IBIS facility |
| title_sort | preliminary study of plasma stream interaction with tungsten target within rpi-ibis facility |
| topic | Plasma dynamics and plasma wall interaction |
| topic_facet | Plasma dynamics and plasma wall interaction |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/82151 |
| work_keys_str_mv | AT skladniksadowskae preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility AT malinowskik preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility AT sadowskimj preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility AT czausk preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility AT marchenkoa preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility AT tsarenkoav preliminarystudyofplasmastreaminteractionwithtungstentargetwithinrpiibisfacility |