First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning
The work describes the design of a multifunctional B4C-limiter, and reports preliminary results from experimental study of the limiter operated at steady-state and pulsed RF discharge cleaning regimes in the Uragan-2M torsatron. Представлены конструкция и предварительные результаты экспериментальног...
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| Дата: | 2010 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2010
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| Цитувати: | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning / G.P. Glazunov, D.I. Baron, M.N. Bondarenko, P.Ya. Burchenko, V.V. Chechkin, V.Ya. Chernyshenko, L.I. Grigor’eva, V.G. Konovalov, A.L. Konotopskiy, V.G. Kotenko, A.V. Lozin, S.M. Maznichenko, V.E. Moiseenko, V.K. Pashnev, N.P. Ponomarenko, S.I. Solodovchenko, Ye.L. Sorokovoy, A.V. Shapoval, V.I. Tereshin, V.S. Voitsenya // Вопросы атомной науки и техники. — 2010. — № 6. — С. 14-16. — Бібліогр.: 6 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859899722638032896 |
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| author | Glazunov, G.P. Baron, D.I. Bondarenko, M.N. Burchenko, P.Ya. Chechkin, V.V. Chernyshenko, V.Ya. Grigor’eva, L.I. Konovalov, V.G. Konotopskiy, A.L. Kotenko, V.G. Lozin, A.V. Maznichenko, S.M. Moiseenko, V.E. Pashnev, V.K. Ponomarenko, N.P. Solodovchenko, S.I. Sorokovoy, Ye.L. Shapoval, A.V. Tereshin, V.I. Voitsenya, V.S. |
| author_facet | Glazunov, G.P. Baron, D.I. Bondarenko, M.N. Burchenko, P.Ya. Chechkin, V.V. Chernyshenko, V.Ya. Grigor’eva, L.I. Konovalov, V.G. Konotopskiy, A.L. Kotenko, V.G. Lozin, A.V. Maznichenko, S.M. Moiseenko, V.E. Pashnev, V.K. Ponomarenko, N.P. Solodovchenko, S.I. Sorokovoy, Ye.L. Shapoval, A.V. Tereshin, V.I. Voitsenya, V.S. |
| citation_txt | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning / G.P. Glazunov, D.I. Baron, M.N. Bondarenko, P.Ya. Burchenko, V.V. Chechkin, V.Ya. Chernyshenko, L.I. Grigor’eva, V.G. Konovalov, A.L. Konotopskiy, V.G. Kotenko, A.V. Lozin, S.M. Maznichenko, V.E. Moiseenko, V.K. Pashnev, N.P. Ponomarenko, S.I. Solodovchenko, Ye.L. Sorokovoy, A.V. Shapoval, V.I. Tereshin, V.S. Voitsenya // Вопросы атомной науки и техники. — 2010. — № 6. — С. 14-16. — Бібліогр.: 6 назв. — англ. |
| collection | DSpace DC |
| description | The work describes the design of a multifunctional B4C-limiter, and reports preliminary results from experimental study of the limiter operated at steady-state and pulsed RF discharge cleaning regimes in the Uragan-2M torsatron.
Представлены конструкция и предварительные результаты экспериментального исследования использования B4C-лимитера во время стационарных и импульсных режимов чистки ВЧ-разрядами в торсатроне Ураган-2М.
Представлено конструкцію і попередні результати експериментального дослідження використання B4C-лимитера під час стаціонарних і імпульсних режимів чищення ВЧ-розрядами в торсатроні Ураган-2М.
|
| first_indexed | 2025-12-07T15:56:41Z |
| format | Article |
| fulltext |
FIRST TESTS OF THE BIASED MOVABLE B4C-LIMITER
IN THE URAGAN-2M TORSATRON
UNDER RF AND UHF WALL CONDITIONING
G.P. Glazunov, D.I. Baron, M.N. Bondarenko, P.Ya. Burchenko, V.V. Chechkin,
V.Ya. Chernyshenko, L.I. Grigor’eva, V.G. Konovalov, A.L. Konotopskiy, V.G. Kotenko,
A.V. Lozin, S.M. Maznichenko, V.E. Moiseenko, V.K. Pashnev, N.P. Ponomarenko,
S.I. Solodovchenko, Ye.L. Sorokovoy, A.V. Shapoval, V.I. Tereshin, V.S. Voitsenya
Institute of Plasma Physics NSC “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
E-mail: glazunov@ipp.kharkov.ua
The work describes the design of a multifunctional B4C-limiter, and reports preliminary results from experimental
study of the limiter operated at steady-state and pulsed RF discharge cleaning regimes in the Uragan-2M torsatron.
PACS: 52.40.Hf
1. INTRODUCTION
The problem of improving vacuum-plasma conditions
in the Uragan-2M torsatron (U-2M) is now considered as
the most important. This is caused by the design features
of the magnetic trap, namely, a low pumping speed of the
vacuum system, the absence of a divertor, the possibility
of direct plasma-wall interactions, etc. In tokamaks [1],
the limiters are used to suppress plasma wall interactions
and in that way to reduce the amount of heavy impurities
in the plasma. Some data on the use of limiters in
stellarators can be found in the literature [2]. However, it
is not quite clear if the way proposed there would be
useful in the case of U-2M, in view of the fact that only
the RF method is used for plasma creation and heating,
that does not exclude the possibility of plasma generation
beyond the region of existence of closed magnetic
surfaces. Therefore, it was of interest to pepare a limiter
in the U-2M and to clarify its influence on vacuum-
plasma conditions by using different limiter head plate
positions relative to the plasma core boundary, and also,
various plate materials and configurations. Besides the
main goal, the limiter might be also used in experiments
to investigate head plate material erosion and transport
behavior, the possibility of partial solid target
boronization of vacuum chamber walls, to perform
electrode bias experiments, etc. At the initial stage of
experiments, a hot-pressed boron carbide was selected as
a material for the limiter head plate, because it has been
previously investigated in detail [3] and was used in the
U-3M torsatron limiter experiments [4].
2. EXPERIMENTAL AND RESULTS
To perform the experiments, a movable limiter was
designed, manufactured and installed in the U-2M
vacuum chamber. The limiter consists of the head plate
(90x90x10 mm) fabricated from a boron carbide plate
hot-pressed in vacuum [3], a plate-drive assembly, and
two Langmuir probes. One of the probes was located
behind the limiter plate at a distance of 3 cm, and was
intended for plasma stream measurements on the back
side of the limiter plate. The limiter head plate is placed
on an insulator. This allowed us to measure signals from
the limiter plate (current, potential) and to switch on/off
negative or positive bias (pulsed or stationary) with
amplitudes up to 250…400 V. After checking for
tightness, the limiter was installed in the U-2M for tests
under edge plasma conditions (Fig.1). The schematic
sketch of the experiment is given in Fig.2.
Fig.1. The movable B4C-limiter in the branch pipe of port
#1 of the Uragan-2M torsatron
Fig.2. Schematic drawing of the experiment with B4C-
limiter in the U-2M torsatron
14 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2010. № 6.
Series: Plasma Physics (16), p. 14-16.
It is seen that at the present configuration the limiter is
open, pumped, biased and movable. The tests were
carried out in the stationary plasma discharge cleaning
regime with typical of U-2M parameters: hydrogen
pressure was 10-2 Pa, electron density ~ 2×1012 cm-3,
electron temperature ~10…15 eV, magnetic field
~0.075 T, the RF generator power ~1 kW at a frequency
of 8.3 MHz, the UHF generator power ~2 kW at a
frequency of 2.375 GHz (electron-cyclotron resonance
conditions). During the tests, the limiter plate was moved
from the chamber wall to the axis for a distance of up to
10 cm. With that, the signals from the Langmuir probes
and the Нα line intensity were measured. The signals from
the limiter were also registered (Fig. 3). It can be seen
from Fig. 3 that in the RF plasma case, the signal polarity
changes from positive to negative at a distance of 4…5 cm
from the chamber wall, and the signal intensity increases
essentially. Note, that in this region the last closed
magnetic surface is located according to U-2M magnetic
configuration measurements (Kϕ = 0.32) [5].
-500
-400
-300
-200
-100
0
100
0 1 2 3 4 5 6 7 8 9 10 11
Distance from U-2M wall, cm
Si
gn
al
a
m
pl
itu
de
, m
V
Fig.3. Limiter signal amplitude versus distance from the
U-2M wall during limiter motion to the plasma axis:
● – steady-state wall conditioning by RF plasma,
●- steady-state wall conditioning by UHF plasma
Langmuir probe experiments have shown that the
edge plasma characteristics are practically independent of
the limiter plate position for both RF and UHF discharges
(current-voltage characteristics are shown in Fig. 4). The
signals from the probe placed at the plasma column
boundary showed no changes during limiter moving to the
plasma axis. At the same time, the signals from the probe
placed behind the plate had constant low amplitudes for
all limiter positions. Spectroscopic measurements also
showed no essential influence of the limiter plate
repositioning in the plasma on the Нα line intensity.
-100
-50
0
50
100
150
200
-500 0 500
Potential [V]
C
ur
re
nt
[m
A
]
Limiter - 0 cm,
steady-state
plasma
Limiter - 10 cm,
steady-state
plasma
Fig.4. Limiter current-voltage characteristics measured
under steady-state RF plasma discharge cleaning conditions
The second kind of limiter test experiments was
carried out under RF plasma pulsed-discharge cleaning
conditions. The typical parameters were: hydrogen
pressure p = 10-3 Pa, electron density ~ 5×1011 cm-3, pulse
duration 20 ms, magnetic field ~ 0.47 T, the RF generator
power ~ 80 kW at a frequency of 5.6 MHz. The current-
voltage characteristics measured at two different limiter
positions, when the head plate was located flush-mounted
with the vacuum chamber wall and when it was at a 10 cm
distance from the wall, are shown in Fig. 5. A rather high
level of data scattering in the case of pulsed discharge
regime is caused by unstable operation of RF generator.
-1400
-900
-400
100
600
1100
1600
-500 0 500
Potential [V]
C
ur
re
nt
[m
A
]
Limiter - 0 cm,
pulse discharge
cleaning regime
Limiter - 10cm,
pulse discharge
cleaning regime
Fig.5. Limiter current-voltage characteristics measured
under pulsed RF discharge cleaning conditions
3. DISCUSSION
The absence of the limiter head plate position effect
(~10 cm from the wall) on the signals of Langmuir probe
located in the plasma column cross-section different from
that of the limiter means that at least with the present
limiter head plate configuration its inputting through the
plasma boundary does not lead to the cutoff of the plasma
column (except the zone behind the head plate). Perhaps,
this is due to the fact that in contrast to other plasma
machines with limiters [1, 2], only the RF method is
applied to create and to heat plasma in the U-2M.
However, to confirm this assumption, additional
experiments with other limiter head plate configurations
in real working regimes are required.
It is obvious from Fig. 5 that ion currents up to 1 A
might be extracted even from not powerful RF plasma
pulses. These values are comparable with those provided
by the pulsed discharge cleaning regime in the U-3M
torsatron (about 200 mA at (-90) V [3], which was
realized with the following typical parameters:
p = 10-2 Pa, ne = 2×1012 cm-3, Te = 10…15 eV, B =
0.035 T. The plasma pulse duration was 50 ms, the
generator power 80 kW and the generator frequency was
5.4 MHz. But unlike the U-3M limiter experiment, in the
present case we have no so-called arc regime, when the
ion current value increases up to 10 A ([3], Fig. 6). The
reasons for this difference in the ion current behavior are
not quite clear. One of them could be a high level of plate
surface finish. The other reason may lie in plasma power
insufficiency for arcing.
15
If the B4C erosion coefficient is put to be ~10-2 at/ion
[6] and the negative pulsed bias duration 20 ms, then the
number of sputtered particles would make up about 1016
per pulse. It requires about 2.5×1020 boron particles (~104
pulses) to form a monolayer coating on the whole surface
of the U-2M vacuum chamber walls.
4. CONCLUSIONS
A movable B4C-limiter has been designed,
manufactured and installed in the Uragan-2M torsatron.
The first experiments at RF wall conditioning regimes
have shown no cutoff of the plasma column (excepting
the zone behind the limiter plate) after crossing the last
closed magnetic surface with the limiter plate and its
moving to the plasma column axis.
Essential ion currents might be extracted during the
RF plasma pulsed-discharge cleaning regime and supplied
to the head B4C-plate; that could be used for partial solid-
target boronization in the Uragan-2M torsatron.
REFERENCES
1. P. Moduszewski // J. Nucl. Mater. 1982, v. 111-112,
p. 253.
2. P. Hillis, P.K. Moduszewski, R.A. Zuhr, et al. // J.
Nucl. Mater. 1987, v. 145-147, p. 496.
3. G.P. Glazunov, E.D. Volkov, V.G. Kotenko, et al. //
Letters J. Tech. Phys. 1995, v. 21, N 11, p. 78 (in
Russian).
Fig.6. Current-voltage characteristics of B4C limiter
in the Uragan-3M torsatron [4]
4. G.P. Glazunov, E.D. Volkov, V.G. Kotenko, et al. // J.
Nucl. Mater. 1997, v. 241-243, p. 1052.
(pulsed discharge cleaning regime)
5. A.A. Beletskii, V.L. Berezhnyj, P.Ya. Burchenko, et
al. // Problems of Atomic Science and Technology.
Series “Plasma Physics” (14). 2008, N 6, p. 13.
So, a few days of pulsed discharge cleaning regime
might be enough to produce a few monolayer boron
carbide coatings for U-2M partial boronization. 6. W. Eckstein, C. Garcia-Rosales, J. Roth,
W. Ottenberger. Sputtering Data. Report IPP 9/82,
1993.
Article received 5.10.10
ПЕРВЫЕ ИСПЫТАНИЯ ПОДВИЖНОГО B4C-ЛИМИТЕРА
В УСЛОВИЯХ ВЧ- И СВЧ-ЧИСТКИ ТОРСАТРОНА УРАГАН-2М
Г.П. Глазунов, Д.И. Барон, M.Н. Бондаренко, П.Я. Бурченко, В.С. Войценя, Л.И. Григорьева,
В.Г. Коновалов, А.Л. Конотопский, В.Г. Котенко, С.М. Мазниченко, В.Е. Моисеенко,
А.В. Лозин, В.К. Пашнев, Н.П. Пономаренко, С.И. Солодовченко, Е.Л. Сороковой,
В.И. Терешин, В.Я. Чернышенко, В.В. Чечкин, А.Н. Шаповал
Представлены конструкция и предварительные результаты экспериментального исследования
использования B4C-лимитера во время стационарных и импульсных режимов чистки ВЧ-разрядами в
торсатроне Ураган-2М.
ПЕРШІ ВИПРОБУВАННЯ РУХОМОГО B4C-ЛИМИТЕРА
В УМОВАХ ВЧ- І СВЧ-ЧИЩЕННЯ ТОРСАТРОНА УРАГАН-2М
Г.П. Глазунов, Д.І. Барон, M.Н. Бондаренко, П.Я. Бурченко, В.С. Войценя, Л.І. Григорьєва,
В.Г. Коновалов, О.Л. Конотопський, В.Г. Котенко, С.М. Мазніченко, В.Є. Моісеєнко,
А.В. Лозін, В.К. Пашнєв, Н.П. Пономаренко, С.І. Солодовченко, Є.Л. Сороковий,
В.І. Терешин, В.Я. Чернишенко, В.В. Чечкін, А.M. Шаповал
Представлено конструкцію і попередні результати експериментального дослідження використання B4C-
лимитера під час стаціонарних і імпульсних режимів чищення ВЧ-розрядами в торсатроні Ураган-2М.
16
REFERENCES
|
| id | nasplib_isofts_kiev_ua-123456789-17445 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T15:56:41Z |
| publishDate | 2010 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Glazunov, G.P. Baron, D.I. Bondarenko, M.N. Burchenko, P.Ya. Chechkin, V.V. Chernyshenko, V.Ya. Grigor’eva, L.I. Konovalov, V.G. Konotopskiy, A.L. Kotenko, V.G. Lozin, A.V. Maznichenko, S.M. Moiseenko, V.E. Pashnev, V.K. Ponomarenko, N.P. Solodovchenko, S.I. Sorokovoy, Ye.L. Shapoval, A.V. Tereshin, V.I. Voitsenya, V.S. 2011-02-26T18:48:43Z 2011-02-26T18:48:43Z 2010 First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning / G.P. Glazunov, D.I. Baron, M.N. Bondarenko, P.Ya. Burchenko, V.V. Chechkin, V.Ya. Chernyshenko, L.I. Grigor’eva, V.G. Konovalov, A.L. Konotopskiy, V.G. Kotenko, A.V. Lozin, S.M. Maznichenko, V.E. Moiseenko, V.K. Pashnev, N.P. Ponomarenko, S.I. Solodovchenko, Ye.L. Sorokovoy, A.V. Shapoval, V.I. Tereshin, V.S. Voitsenya // Вопросы атомной науки и техники. — 2010. — № 6. — С. 14-16. — Бібліогр.: 6 назв. — англ. 1562-6016 https://nasplib.isofts.kiev.ua/handle/123456789/17445 The work describes the design of a multifunctional B4C-limiter, and reports preliminary results from experimental study of the limiter operated at steady-state and pulsed RF discharge cleaning regimes in the Uragan-2M torsatron. Представлены конструкция и предварительные результаты экспериментального исследования использования B4C-лимитера во время стационарных и импульсных режимов чистки ВЧ-разрядами в торсатроне Ураган-2М. Представлено конструкцію і попередні результати експериментального дослідження використання B4C-лимитера під час стаціонарних і імпульсних режимів чищення ВЧ-розрядами в торсатроні Ураган-2М. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Магнитное удержание First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning Первые испытания подвижного B4C-лимитера в условиях ВЧ- и СВЧ-чистки торсатрона Ураган-2М Перші випробування рухомого B4C-лимитера в умовах ВЧ- і СВЧ-чищення торсатрона Ураган-2М Article published earlier |
| spellingShingle | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning Glazunov, G.P. Baron, D.I. Bondarenko, M.N. Burchenko, P.Ya. Chechkin, V.V. Chernyshenko, V.Ya. Grigor’eva, L.I. Konovalov, V.G. Konotopskiy, A.L. Kotenko, V.G. Lozin, A.V. Maznichenko, S.M. Moiseenko, V.E. Pashnev, V.K. Ponomarenko, N.P. Solodovchenko, S.I. Sorokovoy, Ye.L. Shapoval, A.V. Tereshin, V.I. Voitsenya, V.S. Магнитное удержание |
| title | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning |
| title_alt | Первые испытания подвижного B4C-лимитера в условиях ВЧ- и СВЧ-чистки торсатрона Ураган-2М Перші випробування рухомого B4C-лимитера в умовах ВЧ- і СВЧ-чищення торсатрона Ураган-2М |
| title_full | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning |
| title_fullStr | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning |
| title_full_unstemmed | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning |
| title_short | First tests of the biased movable B4C-limiter in the Uragan-2M torsatron under RF and UHF wall conditioning |
| title_sort | first tests of the biased movable b4c-limiter in the uragan-2m torsatron under rf and uhf wall conditioning |
| topic | Магнитное удержание |
| topic_facet | Магнитное удержание |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/17445 |
| work_keys_str_mv | AT glazunovgp firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT barondi firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT bondarenkomn firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT burchenkopya firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT chechkinvv firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT chernyshenkovya firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT grigorevali firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT konovalovvg firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT konotopskiyal firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT kotenkovg firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT lozinav firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT maznichenkosm firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT moiseenkove firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT pashnevvk firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT ponomarenkonp firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT solodovchenkosi firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT sorokovoyyel firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT shapovalav firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT tereshinvi firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT voitsenyavs firsttestsofthebiasedmovableb4climiterintheuragan2mtorsatronunderrfanduhfwallconditioning AT glazunovgp pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT barondi pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT bondarenkomn pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT burchenkopya pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT chechkinvv pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT chernyshenkovya pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT grigorevali pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT konovalovvg pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT konotopskiyal pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT kotenkovg pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT lozinav pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT maznichenkosm pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT moiseenkove pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT pashnevvk pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT ponomarenkonp pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT solodovchenkosi pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT sorokovoyyel pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT shapovalav pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT tereshinvi pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT voitsenyavs pervyeispytaniâpodvižnogob4climiteravusloviâhvčisvččistkitorsatronauragan2m AT glazunovgp peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT barondi peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT bondarenkomn peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT burchenkopya peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT chechkinvv peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT chernyshenkovya peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT grigorevali peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT konovalovvg peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT konotopskiyal peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT kotenkovg peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT lozinav peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT maznichenkosm peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT moiseenkove peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT pashnevvk peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT ponomarenkonp peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT solodovchenkosi peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT sorokovoyyel peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT shapovalav peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT tereshinvi peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m AT voitsenyavs peršíviprobuvannâruhomogob4climiteravumovahvčísvččiŝennâtorsatronauragan2m |