Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse
The results of a study on the formation of an electron beam by a magnetron gun with a secondary-emission cathode (cathode diameter 36 mm, an anode 78 mm) in the voltage range 25...90 kV are presented. The secondaryemission process in the gun is triggered by a voltage pulse with an amplitude of up to...
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2018
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| Zitieren: | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse / N.I. Ayzatsky, A.N. Dovbnya, A.S. Mazmanishvili, N.G. Reshetnyak, V.P. Romas’ko, I.A. Chertishchev // Вопросы атомной науки и техники. — 2018. — № 3. — С. 19-23. — Бібліогр.: 8 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859805044304510976 |
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| author | Ayzatsky, N.I. Dovbnya, A.N. Mazmanishvili, A.S. Reshetnyak, N.G. Romas’ko, V.P. Chertishchev, I.A. |
| author_facet | Ayzatsky, N.I. Dovbnya, A.N. Mazmanishvili, A.S. Reshetnyak, N.G. Romas’ko, V.P. Chertishchev, I.A. |
| citation_txt | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse / N.I. Ayzatsky, A.N. Dovbnya, A.S. Mazmanishvili, N.G. Reshetnyak, V.P. Romas’ko, I.A. Chertishchev // Вопросы атомной науки и техники. — 2018. — № 3. — С. 19-23. — Бібліогр.: 8 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The results of a study on the formation of an electron beam by a magnetron gun with a secondary-emission cathode (cathode diameter 36 mm, an anode 78 mm) in the voltage range 25...90 kV are presented. The secondaryemission process in the gun is triggered by a voltage pulse with an amplitude of up to 16 kV applied to its anode.
The generation of an electron beam is investigated as a function of the voltage of the incoming pulse. The dependence of the onset of electron beam generation on the beginning of the decay of the triggering pulse with its positive
and negative polarity is studied. The dependence of the formation of the electron beam on the time of the secondary
emission on the flat part of the voltage pulse was investigated.
Представлені результати дослідження щодо формування електронного пучка магнетронною гарматою з вторинноемісійним катодом (діаметр катода 36 мм, анода 78 мм) у діапазоні напруг 25...90 кВ. Запуск вторинно-емісійного процесу в
гарматі здійснюється імпульсом напруги амплітудою до 16 кВ, що подається на її анод. Проведено дослідження генерації електронного пучка в залежності від напруги запускаючого імпульсу. Досліджена залежність початку генерації електронного
пучка від початку спаду запускаючого імпульсу при його позитивній і негативній полярностях. Досліджена залежність формування електронного пучка від часу подачі імпульсу запуску вторинної емісії на плоску частину імпульсу напруги.
Представлены результаты исследования по формированию электронного пучка магнетронной пушкой с вторичноэмиссионным катодом (диаметр катода 36 мм, анода 78 мм) в диапазоне напряжений 25..90 кВ. Запуск вторичноэмиссионного процесса в пушке осуществляется импульсом напряжения амплитудой до 16 кВ, подаваемым на её анод.
Проведено исследование генерации электронного пучка в зависимости от напряжения запускающего импульса. Исследована зависимость начала генерации электронного пучка от начала спада запускающего импульса при его положительной и отрицательной полярностях. Исследована зависимость формирования электронного пучка от времени подачи импульса запуска вторичной эмиссии на плоскую часть импульса напряжения.
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| first_indexed | 2025-12-07T15:15:56Z |
| format | Article |
| fulltext |
ISSN 1562-6016. ВАНТ. 2018. №3(115) 19
FORMATION OF THE ELECTRON BEAMIN A SECONDARY-
EMISSION MAGNETRON GUN ITS STARTING
BY ANODULUM HIGH-VOLTAGE PULSE
N.I. Ayzatsky, A.N. Dovbnya, A.S. Mazmanishvili, N.G. Reshetnyak, V.P. Romas’ko,
I.A. Chertishchev
National Science Center “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
E-mail: nreshetnyak@kipt.kharkov.ua
The results of a study on the formation of an electron beam by a magnetron gun with a secondary-emission cath-
ode (cathode diameter 36 mm, an anode 78 mm) in the voltage range 25...90 kV are presented. The secondary-
emission process in the gun is triggered by a voltage pulse with an amplitude of up to 16 kV applied to its anode.
The generation of an electron beam is investigated as a function of the voltage of the incoming pulse. The depend-
ence of the onset of electron beam generation on the beginning of the decay of the triggering pulse with its positive
and negative polarity is studied. The dependence of the formation of the electron beam on the time of the secondary
emission on the flat part of the voltage pulse was investigated.
PACS: 29.27.Fh
INTRODUCTION
The study of electron beams of various configura-
tions and intensities is associated with their use in high-
voltage pulsed microwave electronics, electron beam
technologies of accelerating technology and so on. [1,
2]. With the beam method of specimen processing, it is
possible to create materials with improved characteris-
tics, increased microhardness, corrosion resistance, etc.
[3, 4]. These studies were carried out with an electron
energy of 100...400 keV [5, 6].
The NSC KIPT conducts research with sources of
electrons with cold metal cathodes operating in the sec-
ondary emission regime. The electron source is a mag-
netron gun. The principle of operation of such guns is
based on the reverse bombardment of the cathode by
electrons returned by the magnetic field, the formation
of an electromagnetic cloud near the cathode and the
formation of a beam in crossed electric and magnetic
fields. On the basis of a magnetron gun with a second-
ary-emission cathode, an electron accelerator was creat-
ed [7], in which an axial electron beam is used to irradi-
ate metal targets [4]. The possibility of irradiating an
inner cylindrical surface with a radial electron beam has
been studied [8]. The electric field needed to generate
the beam in the gun was created by a voltage pulse with
an ejection at the top of two pulsed generators fed to the
cathode of the gun. In this paper we present the results
on the formation of an electron beam by a magnetron
gun in which an electric field was created by summing
the electric fields of two pulses: a long pulse with a flat
apex fed to the cathode and a short pulse with a steep
slope applied to the anode of the gun.
WAYS TO CREATE AN ELECTRIC FIELD
IN THE INTERELECTRODE GAP
OF THE MAGNETRON GUN
The electric and magnetic fields in the magnetron
gun determine the development of secondary emission
processes at its cathode and the generation of an elec-
tron beam. The electric field necessary for generating
the beam in the gun in the anode-cathode gap must have
two time intervals. The first is a section with a falling
field, on which secondary emission multiplication oc-
curs and the formation of a cloud of primary electrons
around the cathode. The second is the share with a con-
stant field, which provides the stationary stage of the
secondary emission process and the formation of the
beam. This can be obtained by several methods.
In the first method, secondary emission multiplica-
tion was initiated by a specially generated ejection at
the apex of the plane part of the voltage pulse applied to
the cathode of the gun [7].
The disadvantage of the first method is a sufficiently
large amount of the duration of the emission drop. This
is due to the influence of the parasitic parameters of the
output circuit of the feeding pulse generator and the
supply circuits, which does not allow having a large
slope of the emission drop.
Fig. 1.
Scheme of summation
of electric fields
of two pulses U1, U2
Fig. 2. Power plan
magnetron gun with the sum-
mation of the fields of two
pulses U1, U2: C – cathode;
A – anode; R – load;
FC – Faraday cylinder
The second method is the summation in the inte-
relectrode gap of the magnetron gun of electric fields of
two pulses: a long one with a flat top U1 applied to the
cathode and a short one with a steep U2 drop applied to
the anode of the gun. This allows us to obtain the nec-
essary dependence of the total electric field on time
(Fig. 1) to ensure secondary emission processes at the
cathode and the formation of an electron beam.
Fig. 2 shows the power circuit of the magnetron gun
in this way.
EXPERIMENTAL INSTALLATION
AND RESEARCH TECHNIQUE
Experiments on the formation of an electron beam
by a magnetron gun with a secondary-emission cathode
and measurements of its parameters were carried out in
mailto:nreshetnyak@kipt.kharkov.ua
ISSN 1562-6016. ВАНТ. 2018. №3(115) 20
an experimental setup, the block diagram of which is
shown in Fig. 3. To power the magnetron gun, a pulse
generator (1) was used with amplitude of the flat part of
the pulse of 20...100 kV, with duration of 50...10 μs and
a repetition rate of 3...10 Hz, which is fed to the cathode
of the gun. In the pulse generator circuit, a full dis-
charge of the storage capacitance was applied to the
pulse transformer through a thyratron. The secondary
emission in the gun is triggered by a voltage impulse
with a steep recession that was created by an impulse
generator (8) with voltage amplitude of up to 16 kV and
applied to the anode of the gun.
Fig. 3. Block diagram of the experimental setup:
1 – high voltage pulse generator; 2, 5 – insulators;
3 – vacuum chamber; 4 – solenoid; 6 – measuring sys-
tem; 7 – synchronization unit; 8 – trigger pulse genera-
tor; C – cathode; A – anode; FC – Faraday cylinder
A magnetic field for the generation and transport of
an electron beam is created by a solenoid (4) consisting
of 4 sections, powered by direct current sources. The
amplitude and longitudinal distribution of the magnetic
field could be controlled by varying the current in the
sections of the solenoid, which made it possible to ob-
tain various modes of electron beam formation.
Measurements of the electron beam current were
made with the help of an 8-section Faraday cylinder FC.
The processing of the results of measurements of the
beam currents and the voltage pulse was carried out
using a computer measuring system (6). The measure-
ment error is 1...2%. The transverse dimensions of the
beam were measured by obtaining a print on a copper
disk. During the research, a digital oscilloscope with the
Tektronix TDS-2012 memory with a bandwidth of
100 MHz was used.
EXPERIMENTAL RESULTS
AND THEIR DISCUSSION
Experimental studies on the formation of an electron
beam and measurement of its parameters on the voltage
at the cathode in the range 20...90 kV have been carried
out.
Fig. 4 shows the distributions of the magnetic field
along the axis of the magnetron gun and the beam
transport channel at which the experiments were per-
formed, and it shows the arrangement of the elements of
the gun and the Faraday cylinder.
The secondary-emission multiplication of electrons
at the cathode of the gun was triggered by pulses of
nanosecond duration with an amplitude decay up to
16 kV applied to the anode of the gun. The formation
of the electron beam was carried out with a pulse of
triggering a positive and negative polarity in the voltage
range 7.5...16 kV, which is shown in Fig. 5.
Fig. 4. Distributions of the magnetic field along the axis
of the magnetron gun (curves 1-5) and the transporting
channel of the beam and the arrangement
of the elements of the gun and the Faraday cylinder FC.
A – anode; C – cathode
The dependence of the onset of beam generation on
the voltage of the trigger pulse Uz is studied. Experi-
ments have shown that this dependence has a threshold
character of triggering secondary emission electron
multiplication and beam generation, both for positive
and negative polarities of the trigger pulse.
a b
Fig. 5. Voltage pulses at the anode of the magnetron
gun, a – positive polarity; b – negative polarity,
vertical scale 5 kV/div
Fig. 6 shows the dependence of the beam current I6,
taken from the 6
th
segment of the Faraday cylinder, with
negative (curve 1) and positive (curve 2) polarity of the
triggering pulse Uz (50 kV cathode voltage). It can be
seen that the steady generation of the electron beam
occurs at amplitude of the triggering pulse of 7 kV.
Fig. 6. Dependence of the beam current on the 6
th
segment
of the Faraday cylinder from the polarity of the trigger
pulse voltage Uz: 1 – negative polarity;
2 – positive polarity
ISSN 1562-6016. ВАНТ. 2018. №3(115) 21
Investigations were conducted on the formation of
an electron beam and measurement of its parameters
with negative polarity of the triggering pulse Uz15 kV.
The experiments were carried out with a voltage on the
cathode of 56 kV and the distribution of the magnetic
field shown in Fig. 4 (curve 2). Fig. 7 shows oscillo-
grams of voltage pulses and beam currents I5, I6, I7
taken from three segments (5, 6, and 7) of the Faraday
cylinder. The above oscillograms of currents indicate
that the shapes of the pulses practically coincide, and
during the pulse the ratio of currents from different
segments in time is constant. This suggests that the pro-
cess of the secondary emission multiplication of elec-
trons is stable during the duration of the voltage pulse
across the entire surface of the cathode.
From Fig. 7 it can be seen that at the moment of
beam generation at the voltage pulse drop U there ap-
pears a "gain" of the amplitude, which is connected
with the "loading" of the pulse generator by the beam
current. In this case, the law of increase in the beam
current for all oscillograms coincides. Thus, in the pro-
cess of secondary emission multiplication, the entire
surface of the cathode is used, which can occur when
the primary electrons are equidistantly distributed along
the azimuth in the cathode-anode gap. It follows that a
fairly well-formed cloud of primary electrons has been
created which bombard the cathode. With a positive
polarity of the trigger pulse, a similar picture is ob-
served.
Fig. 7. Oscillograms of voltage pulses at the cathode
(U) and currents from three segments of the Faraday
cylinder (I5, I6, I7). U – 14 kV/div; I5, I6, I7 – 2 A/div
With a uniform distribution of the magnetic field at
the cathode of the magnetron gun and in the beam
transport region (see Fig. 4, curve 2), the coefficient of
azimuthally homogeneity beam k=Imax/Imin was of the
1.12, where Imax and Imin, respectively, the maximum
and the minimum value of the currents from the Fara-
day cylinder segment.
The dependence of the beginning of electron beam
generation on the instant of voltage drop of the starting
pulse Uz with positive and negative polarity is investi-
gated. Fig. 8 shows the oscillograms of the trigger pulse
Uz and the beam current I6 taken from the 6
th
segment
of the Faraday cylinder (Fig. 8,a – positive polarity) and
the current I6, I7 taken from the 6
th
and 7
th
segments
(Fig. 8,b,c – negative polarity) at a voltage of 70 kV on
the cathode.
From Fig. 8,a it can be seen that the generation of
the electron beam occurs in 60 ns from the beginning of
the decay of the triggering pulse at a slope of
250 kV/μs. From Fig. 8,b it follows that the beam gen-
eration occurs in 27 ns with a drop slope of 550 kV/μs.
From Fig. 8,c it follows that there is practically no scat-
ter in the amplitudes of the beam current I6 and I7 from
the 6
th
and 7
th
segments of the Faraday cylinder for 15
consecutive pulses.
The rise time of the electron beam current is inves-
tigated. By the magnitude of the onset time, one can
judge the processes of formation of an electron cloud
around the cathode. In Fig. 8,b,c shows the beam cur-
rent I6 and I7 from 6
th
and 7
th
segments of the Faraday
cylinder. It is seen that the rise time of the beam current
is 7 ns at the level of 0.1...0.9.
a
b
c
Fig. 8. Oscillograms of the onset of pulses of currents
I6, I7 on the 6
th
and 7
th
segments of the Faraday cylin-
der and the voltage of the trigger pulse Uz; a – positive
polarity; b and c – negative polarity; c – 15 consecutive
pulses. Uz – 5 kV/div; I6, I7 – 2 A/div
This indicates that in a short time (a few nanosec-
onds) the number of secondary electron multiplication
acts was sufficient to achieve the space charge density
necessary for self-sustaining secondary emission in a
magnetron gun with a cold secondary-emission cathode.
The minimum time for the initiation of the genera-
tion of the electron beam from the decay of the trigger
pulse, with its negative polarity, was ~20 ns (the
ISSN 1562-6016. ВАНТ. 2018. №3(115) 22
750 kV/μs), and with a positive ~55 ns (the slope of the
decay was ~270 kV/μs).
The dependence of the beginning of the time of
electron beam generation on the voltage of triggering
secondary emission of Uz in the voltage range
7.5...16 kV for positive and negative polarity was stud-
ied (Fig. 9).
Fig. 9. Dependence of the onset of beam current
generation on the Faraday cylinder from the voltage
of the trigger pulse Uz: 1 – positive polarity;
2 – negative polarity
Measurements of the dimensions of the electron
beam on a copper target located in the region of the
Faraday cylinder at electron energy of 50 keV are car-
ried out. In Fig. 10 the beam imprint at a distance of
60 mm from the cut of the magnetron gun is shown.
As it can be seen, the magnetron gun forms a tubular
electron beam with an outer diameter of 42 mm and
wall thickness 3 mm.
The dependence of the formation of an electron
beam on the moment of the secondary emission pulse is
applied to the flat part of the voltage pulse. Fig. 11
shows the oscillograms of the voltage pulses at the
cathode and the beam current for different instants of
time t1, t2, t3 of the triggering pulse Uz15 kV. In the
case of negative polarity, the beam currents (I1, I3, I4)
taken from 1
st
, 3
rd
and 4
th
segments of the Faraday cyl-
inder (see Fig. 11,a,b,c) at a cathode voltage of 56 kV.
From Fig. 11 it can be seen that the generation of the
electron beam occurs at instants of time on the plane
part of the voltage pulse at the cathode of the gun, cor-
responding to the moment the trigger pulse is applied to
its anode.
Fig. 10. Imprint of the beam on a copper target
The width of the formation zone of the electron beam
is measured from the magnetic field H=Hmax-Hmin,
where Hmax and Hmin are the maximum and minimum
values of the magnetic field, respectively, for a cathode
voltage of 75 kV.
a b c
Fig. 11. Oscillograms of voltage pulses at the cathode U and beam current I for three time instants;
a – t1; b – t2; c – t3 of the trigger pulse. The horizontal scale is 2.5 μs/div: U 14 kV/div; I1, I3, I4 – 3 A/div
Fig. 12. The dependence of the beam current
on the Faraday cylinder on the strength
of the magnetic field
Fig. 13. Dependence of the beam current I
on the Faraday cylinder on the voltage U
on the cathode
As can be seen from Fig. 12, the formation of the
beam begins at a magnetic field at the cathode of
860 Oe (see the lower boundary Fig. 4, curve 3), with
the Hall cutoff field of 610 Oe. The beam generation
continues with an increase in the magnetic field ampli-
tude up to 1200 Oe (the upper border, see Fig. 4,
ISSN 1562-6016. ВАНТ. 2018. №3(115) 23
curve 5). Thus, in this experiment, the formation zone
of the magnetic field is 350 Oe.
In the formation zone, there is an area of the optimal
magnetic field (see Fig. 4, curve 4), in which the ampli-
tude of the beam current is maximal. In this case, the
ratio of the value of the optimal magnetic field to the
Hall field is 1.7, which agrees with the data of the
work.
As the amplitude of the magnetic field decreases
from the boundary of H from below or from above,
the conditions for the secondary-emission multiplica-
tion of electrons are violated, and the process of genera-
tion of the electron beam is disrupted. The amplitude
and shape of the current pulse of the electron beam in
the generation zone vary insignificantly – by 3...4%.
The dependence of the beam current I on the Fara-
day cylinder on the voltage at the cathode in the range
25...75 kV was studied. The results of the measure-
ments are shown in Fig. 13. It can be seen that the beam
current I obeys the law "3/2". In the process of measur-
ing, each value of the voltage corresponded to the value
of the magnetic field at which the amplitude of the
beam current was maximum.
CONCLUSIONS
1. Studies have shown the possibility of a stable for-
mation of an electron beam by a magnetron gun at the
start of secondary emission multiplication at its cathode
by a high-voltage voltage pulse applied to the anode.
2. It is shown that the beam generation in the magne-
tron gun occurs only when the threshold value of the trig-
ger pulse is exceeded for its positive and negative polarity.
3. It has been shown that the formation of an elec-
tron beam in a magnetron gun with a secondary-
emission cathode occurs within ~20 ns with negative
polarity and ~55 ns with positive polarity from the on-
set of the decay of the trigger pulse and a drop steep-
ness of ~750 kV/μs and ~270 kV/μs, respectively.
4. It is shown that the generation of the electron
beam occurs at the instants of time on the plane part of
the voltage pulse at the cathode of the gun, correspond-
ing to the moment the triggering pulse is applied to its
anode.
REFERENCES
1. Yu.Ya. Volkolupov, A.N. Dovbnya, V.V. Zakutin, et
al. Generation of electron beams in a magnetron diode
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2. Y.M. Saveliev, W. Sibbet, D.M. Parkes. Self-
excitation and characteristics of the crossed-fields
emission electron source // Review of Scientific In-
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Article received 13.02.2018
ФОРМИРОВАНИЕ ЭЛЕКТРОННОГО ПУЧКА ВО ВТОРИЧНО-ЭМИССИОННОЙ МАГНЕТРОННОЙ ПУШКЕ
ПРИ ЕЁ ЗАПУСКЕ АНОДНЫМ ВЫСОКОВОЛЬТНЫМ ИМПУЛЬСОМ
Н.И. Айзацкий, А.Н. Довбня, А.С. Мазманишвили, Н.Г. Решетняк, В.П. Ромасько, И.А. Чертищев
Представлены результаты исследования по формированию электронного пучка магнетронной пушкой с вторично-
эмиссионным катодом (диаметр катода 36 мм, анода 78 мм) в диапазоне напряжений 25..90 кВ. Запуск вторично-
эмиссионного процесса в пушке осуществляется импульсом напряжения амплитудой до 16 кВ, подаваемым на её анод.
Проведено исследование генерации электронного пучка в зависимости от напряжения запускающего импульса. Иссле-
дована зависимость начала генерации электронного пучка от начала спада запускающего импульса при его положитель-
ной и отрицательной полярностях. Исследована зависимость формирования электронного пучка от времени подачи им-
пульса запуска вторичной эмиссии на плоскую часть импульса напряжения.
ФОРМУВАННЯ ЕЛЕКТРОННОГО ПУЧКА У ВТОРИННО-ЕМІСІЙНІЙ МАГНЕТРОННІЙ
ГАРМАТІ ПРИ ЇЇ ЗАПУСКУ АНОДНИМ ВИСОКОВОЛЬТНИМ ІМПУЛЬСОМ
Н.І. Айзацький, А.Н. Довбня, О.С. Мазманішвілі, М.Г. Решетняк, В.П. Ромасько, І.А. Чертіщев
Представлені результати дослідження щодо формування електронного пучка магнетронною гарматою з вторинно-
емісійним катодом (діаметр катода 36 мм, анода 78 мм) у діапазоні напруг 25...90 кВ. Запуск вторинно-емісійного процесу в
гарматі здійснюється імпульсом напруги амплітудою до 16 кВ, що подається на її анод. Проведено дослідження генерації еле-
ктронного пучка в залежності від напруги запускаючого імпульсу. Досліджена залежність початку генерації електронного
пучка від початку спаду запускаючого імпульсу при його позитивній і негативній полярностях. Досліджена залежність форму-
вання електронного пучка від часу подачі імпульсу запуску вторинної емісії на плоску частину імпульсу напруги.
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| id | nasplib_isofts_kiev_ua-123456789-147241 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T15:15:56Z |
| publishDate | 2018 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Ayzatsky, N.I. Dovbnya, A.N. Mazmanishvili, A.S. Reshetnyak, N.G. Romas’ko, V.P. Chertishchev, I.A. 2019-02-13T19:44:19Z 2019-02-13T19:44:19Z 2018 Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse / N.I. Ayzatsky, A.N. Dovbnya, A.S. Mazmanishvili, N.G. Reshetnyak, V.P. Romas’ko, I.A. Chertishchev // Вопросы атомной науки и техники. — 2018. — № 3. — С. 19-23. — Бібліогр.: 8 назв. — англ. 1562-6016 PACS: 29.27.Fh https://nasplib.isofts.kiev.ua/handle/123456789/147241 The results of a study on the formation of an electron beam by a magnetron gun with a secondary-emission cathode (cathode diameter 36 mm, an anode 78 mm) in the voltage range 25...90 kV are presented. The secondaryemission process in the gun is triggered by a voltage pulse with an amplitude of up to 16 kV applied to its anode. The generation of an electron beam is investigated as a function of the voltage of the incoming pulse. The dependence of the onset of electron beam generation on the beginning of the decay of the triggering pulse with its positive and negative polarity is studied. The dependence of the formation of the electron beam on the time of the secondary emission on the flat part of the voltage pulse was investigated. Представлені результати дослідження щодо формування електронного пучка магнетронною гарматою з вторинноемісійним катодом (діаметр катода 36 мм, анода 78 мм) у діапазоні напруг 25...90 кВ. Запуск вторинно-емісійного процесу в гарматі здійснюється імпульсом напруги амплітудою до 16 кВ, що подається на її анод. Проведено дослідження генерації електронного пучка в залежності від напруги запускаючого імпульсу. Досліджена залежність початку генерації електронного пучка від початку спаду запускаючого імпульсу при його позитивній і негативній полярностях. Досліджена залежність формування електронного пучка від часу подачі імпульсу запуску вторинної емісії на плоску частину імпульсу напруги. Представлены результаты исследования по формированию электронного пучка магнетронной пушкой с вторичноэмиссионным катодом (диаметр катода 36 мм, анода 78 мм) в диапазоне напряжений 25..90 кВ. Запуск вторичноэмиссионного процесса в пушке осуществляется импульсом напряжения амплитудой до 16 кВ, подаваемым на её анод. Проведено исследование генерации электронного пучка в зависимости от напряжения запускающего импульса. Исследована зависимость начала генерации электронного пучка от начала спада запускающего импульса при его положительной и отрицательной полярностях. Исследована зависимость формирования электронного пучка от времени подачи импульса запуска вторичной эмиссии на плоскую часть импульса напряжения. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Теория и техника ускорения частиц Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse Формування електронного пучка у вторинно-емісійній магнетронній гарматі при її запуску анодним високовольтним імпульсом Формирование электронного пучка во вторично-эмиссионной магнетронной пушке при её запуске анодным высоковольлтным импульсом Article published earlier |
| spellingShingle | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse Ayzatsky, N.I. Dovbnya, A.N. Mazmanishvili, A.S. Reshetnyak, N.G. Romas’ko, V.P. Chertishchev, I.A. Теория и техника ускорения частиц |
| title | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| title_alt | Формування електронного пучка у вторинно-емісійній магнетронній гарматі при її запуску анодним високовольтним імпульсом Формирование электронного пучка во вторично-эмиссионной магнетронной пушке при её запуске анодным высоковольлтным импульсом |
| title_full | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| title_fullStr | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| title_full_unstemmed | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| title_short | Formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| title_sort | formation of the electron beamin a secondaryemission magnetron gun its starting by anodulum high-voltage pulse |
| topic | Теория и техника ускорения частиц |
| topic_facet | Теория и техника ускорения частиц |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/147241 |
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