Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves
Three wave interaction has been observed in experiments on Uragan-3M torsatron. Two RF antennas with frequencies Ω1 and Ω2 were used simultaneously for plasma production and heating. Plasma was probed by microwaves, these allowed to study reflection of microwaves at almost whole plasma radius. Spect...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 2005 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2005
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| Цитувати: | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves / O.S. Pavlichenko, A.I. Skibenko, E.D. Volkov, V.L. Berezhniy, V.L. Ocheretenko, V.G. Konovalov, A.Ye. Kulaga, A.P. Litvinov, I.B. Pinos, A.V. Prokopenko, A.N. Shapoval, O.M. Shvets, S.A. Tsybenko // Вопросы атомной науки и техники. — 2005. — № 2. — С. 17-19. — Бібліогр.: 5 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859941578097819648 |
|---|---|
| author | Pavlichenko, O.S. Skibenko, A.I. Volkov, E.D. Berezhniy, V.L. Ocheretenko, V.L. Konovalov, V.G. Kulaga, A.Ye. Litvinov, A.P. Pinos, I.B. Prokopenko, A.V. Shapoval, A.N. Shvets, O.M. Tsybenko, S.A. |
| author_facet | Pavlichenko, O.S. Skibenko, A.I. Volkov, E.D. Berezhniy, V.L. Ocheretenko, V.L. Konovalov, V.G. Kulaga, A.Ye. Litvinov, A.P. Pinos, I.B. Prokopenko, A.V. Shapoval, A.N. Shvets, O.M. Tsybenko, S.A. |
| citation_txt | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves / O.S. Pavlichenko, A.I. Skibenko, E.D. Volkov, V.L. Berezhniy, V.L. Ocheretenko, V.G. Konovalov, A.Ye. Kulaga, A.P. Litvinov, I.B. Pinos, A.V. Prokopenko, A.N. Shapoval, O.M. Shvets, S.A. Tsybenko // Вопросы атомной науки и техники. — 2005. — № 2. — С. 17-19. — Бібліогр.: 5 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | Three wave interaction has been observed in experiments on Uragan-3M torsatron. Two RF antennas with frequencies Ω1 and Ω2 were used simultaneously for plasma production and heating. Plasma was probed by microwaves, these allowed to study reflection of microwaves at almost whole plasma radius. Spectral analysis of reflected microwaves showed an existence of plasma density fluctuation with frequency Ω1 – Ω2. The suppression of plasma low frequencies was observed, when the plasma oscillation with Ω1 – Ω2 frequency has appeared. Microwaves probing of these fluctuations is the useful tool for studies of their influence on plasma behavior and possibly RF power absorption profile.
Трьоххвильова взаємодія спостерігалась в експериментах на торсатроні Ураган-3М. Дві ВЧ антени з частотами Ω1 і Ω2 одночасно використовувались для створення і нагріву плазми, яка зондувалась мікрохвилями, місце відбиття яких перекривало майже весь радіус. При спектральному аналізі відбитих НВЧ сигналів виявлені флуктуації густини плазми з частотою Ω1 – Ω2. При появі коливань з частотою Ω1 – Ω2 спостерігалось пригнічення НЧ флуктуацій. Мікрохвильове зондування є корисним засобом для вивчення їх впливу на поведінку плазми та, можливо, для відтворення профілю поглинання ВЧ потужності.
Трехволновое взаимодействие наблюдалось в экспериментах на торсатроне Ураган-3М. Две ВЧ антенны с частотами Ω1 и Ω2 одновременно использовались для создания и нагрева плазмы, которая зондировалась микроволнами, место отражения которых перекрывало почти весь радиус. При спектральном анализе отраженных СВЧ сигналов обнаружены флуктуации плотности плазмы с частотой Ω1 – Ω2. При появлении колебаний на частоте Ω1 – Ω2 наблюдалось подавление НЧ флуктуаций. Микроволновое зондирование является полезным средством для изучения их влияния на поведение плазмы и, возможно, для воссоздания профиля поглощения ВЧ мощности.
|
| first_indexed | 2025-12-07T16:11:10Z |
| format | Article |
| fulltext |
PECULIARITIES OF PLASMA FLUCTUATIONS DURING RF HEATING
IN URAGAN-3M TORSATRON BY MEANS OF TWO ALFVEN WAVES
O.S. Pavlichenko, A.I. Skibenko, E.D. Volkov, V.L. Berezhniy, V.L. Ocheretenko,
V.G. Konovalov, A.Ye. Kulaga, A.P. Litvinov, I.B. Pinos, A.V. Prokopenko, A.N. Shapoval,
O.M. Shvets, S.A. Tsybenko
Institute of Plasma Physics, NSC KIPT, 61108, Kharkov, Ukraine
Three wave interaction has been observed in experiments on Uragan-3M torsatron. Two RF antennas with frequencies Ω1
and Ω2 were used simultaneously for plasma production and heating. Plasma was probed by microwaves, these allowed to
study reflection of microwaves at almost whole plasma radius. Spectral analysis of reflected microwaves showed an existence
of plasma density fluctuation with frequency Ω1 – Ω2. The suppression of plasma low frequencies was observed, when the
plasma oscillation with Ω1 – Ω2 frequency has appeared. Microwaves probing of these fluctuations is the useful tool for
studies of their influence on plasma behavior and possibly RF power absorption profile.
PACS: 52.55.Hc
It is known [1] that perturbations induced in plasma
by powerful electromagnetic (EM) wave influence the
propagation of other waves propagating through
perturbed region. Plasma parameters –
electroconductivity and dielectric permittivity – are being
modulated by a powerful wave with frequency of Ω1. If
other powerful EM wave with frequency of Ω2 propagates
through the same region, plasma parameter modulation on
a difference frequency Ω = Ω1 – Ω2 is due to nonlinear
interaction. If the third EM wave propagates (reflects)
through this region, it can be modulated due to
modulation of plasma parameters on frequency Ω.
Interaction of waves in plasma was studied in 3-wave
approximation for arbitrary number of interacting waves
[2]. The difference frequency perturbations have been
observed at interaction of SHF waves in the upper hybrid
resonance region [3].
In this work we have studied plasma fluctuations
induced in Uragan-3M (U3-M) torsatron difference
frequency of two RF oscillators used for plasma
production and heating by absorption of waves in region
of Alfven resonance [4]. Two RF antennas – frame type
and 3-half turn type [4] were fed from separate oscillators
(frequency – Ω1.2 ≈ 8.4 … 8.8 MHz, RF power – up to
200kW, pulse duration – up to 50 ms); different scenarios
of antenna turn on/off were used including of 20 ms
overlapping of RF pulses. The difference of oscillator
frequencies was varied for optimization of power
absorption (∆Ω ≈ 0.1 … 0.4 MHz).
In these experiments data on plasma density and it
fluctuations were obtained by means of 3 channel
microwave reflectometer, edge Hα line observation and
ECE (2nd harmonic, X-mode). Schematic setup of RF and
microwave antennas is shown on Fig.1.Plasma was
probed by microwave in 3 locations and for different
Fig.1
directions: in horizontal direction – X-wave probing F =
18…26 GHz (Fig.1b) - both inside (1) and outside (2) and
in vertical direction (3) – O-wave probing F =10Hz. This
allowed to study reflection of microwaves at almost
whole plasma radius (0.1 < r/a < 0.9) [5].
Line averaged electron density was measured by 2mm
microwave interferometer.
Fig.2
For Hα-emission observation we have used a simple
setup: 2 lens + filters + PMT. These detectors could get
plasma light from volumes of ~ 2 cm cross-beam size
(Fig.2). ECE signals were received in range F=30…37.5
GHz.
Fig.3. Time dependency integral density NL, HF curent of
1st (K1) and 2nd (K2) oscillators, reflected UHF signal
Data were sampled with ADC (sampling frequency –
up to 3 MHz), stored and analyzed.
Spectral analysis of reflected microwaves and Hα-
emission showed that a strong component of high
frequency fluctuations (F = 70 … 300 kHz) has been
observed on spectra of signals related to electron density
Problems of Atomic Science and Technology. Series: Plasma Physics (11). 2005. № 2. P. 17-19 17
a b
D-D
fluctuations (Fig.4.) during time period of simultaneous
operation of both K1, K2 oscillators (Fig.3).
0 100 200 300 400
10 -3
10 -2
10 -1
10 0
10 1
10 2
10 3
f , k H z
L
o
g
(P
o
w
e
r
sp
e
ct
ru
m
)
Fig.4. Spectrum of reflected X-wave (F=25 GHz)
during time period of simultaneous operation of two RF
oscillators
Fig.5. Dependency of excited oscillation on frequency
difference of oscillators
As for as it was seen that the frequency and amplitude
of this component depended on RF oscillators frequency a
close look on relationship between RF oscillators
frequencies and frequency of fluctuations was done.
Results of these observations summarize Fig.5
showing that strong electron density modulation on the
difference (beat) frequency F ≈ F1 – F2 (F1, F2 – RF
oscillator frequencies) takes place.
It was interesting to study properties of these
fluctuations, in particular – radial distribution and RF
power dependence.
For comparison of data obtained for different
discharges and for different probing microwave
frequencies a normalization of data of numerical spectral
analysis was performed according to formula (1)
Pnorm f 1− f 2 =P peak >< Alevel/¿P full¿
¿
, (1)
where ¿P full >= 1
ni
∑ P i f – averaged spectral
power in the frequency range of 5ч500 kHz,
¿P peak >= 1
nk
∑ Pk f – averaged spectral power
in the frequency range of 4kHz around the beat frequency,
¿Alevel >= 1
ni
∑ Ai – signal amplitude averaged by
data ensemble.
Time behavior of reflected microwave fluctuation
spectra in discharges with 10 ms overlapping of RF
oscillator pulses is shown on Fig.6.
Two frequency domains are observed: broad band
(few kHz – ≈ 100 kHz) “natural” fluctuations and RF
induced beat frequency region (Ω ≈ Ω1 – Ω2).
Fig.6. Temporal-frequency behavior of reflected wave
fluctuations
Intensity of beat frequency fluctuations is much larger
then that of “natural” broadband fluctuations. Their
appearance is accompanied by suppression of “natural”
fluctuations. After turn off of first RF oscillator, “natural”
fluctuations are restored. The effect of suppression of the
“natural” fluctuations is stronger with increase of beat
frequency fluctuations.
Low level oscillations in the beat frequency range
were observed also when the 2nd RF oscillator was not
powered. This can be explained as result of excitation of
the 2nd oscillator by the oscillations of the 1st one.
Fluctuations in the beat frequency range have a finite
width of ∆f = 5÷50 kHz and shape of this band is
changing during overlap period: low frequencies prevail
at the beginning, high frequencies – in the end of overlap
period.
Fig.7. The reflected wave fluctuation amplitude versus
the generator lamp voltage
The beat frequency fluctuation intensity depends on
RF oscillator’s power. This fact illustrates Fig7, where 1 –
2nd RF oscillator lamp anode voltage was constant (9 kV),
18
1st one was changed; 2 – 1st RF oscillator lamp anode
voltage was constant (7.5 kV), 2nd one was changed.
It was interesting to study a radial distribution of the
beat frequency fluctuations as for as it give some
information of RF wave power radial distribution. This
study was done with microwaves reflecting all along
plasma radius (X-wave, 19÷25 GHz). The dependence of
the beat frequency fluctuation obtained at probing
frequency change is shown on Fig8. The reflecting layer
position for a given probing frequency was determined
from measured reflected wave phase shift
Δϕ
2π =
2f
c ∫
0
rcut
μO , X r dr , (2)
where μO,X – reflection indexes for O- or X-waves.
Fig.8. Frequency dependency of fluctuation amplitude:
1 – outside probing, 2 – inside probing
It was shown in this experiment that attempts to
increase heating RF power by simultaneous operation of 2
RF oscillators with different frequencies are accompanied
with the excitation of plasma density fluctuations in the
vicinity of difference (beat) frequency of oscillators. For
plasma optimization the difference frequency of 2 RF
oscillators was usually in the range of 200ч300 kHz and
larger then frequency band of ‘natural” density
fluctuations (1ч100 kHz). The beat frequency excitation
was accompanied with suppression of “natural”
fluctuations (Fig.6, 9), but had no noticeable effects on
plasma confinement.
Observation of “beat” frequency in the electron
density fluctuation spectrum at excitation of 2 Alfven
waves with different frequencies in plasma presumes an
existence of density fluctuation at Alfven wave
frequencies.
Fig.9. Dependency η=P2/P1 from probing frequency
(P1 is total power of fluctuation when one oscilator was
switched on, P2 is one when two oscilators where
switched on)
Direct observation of high frequency (8 MHz) density
fluctuations might give information on link between RF
wave amplitude and RF density fluctuations and is of
interest from the point of view of RF power deposition
profile diagnostic.
REFERENCES
1. V.L. Ginsburg. Propagation of the electromagnetic
waves in plasma. Moscow: "Nauka", 1967.
2. A.S. Bakai // Nuclear fusion (10) 1970, p. 53-67.
3. A.S. Bakai, M.P. Vasil'ev, V.S. Voitsenya et al. //
Plasma Physics (4). 1976, p. 694 (in Russian).
4. A.I. Lysoivan, V.E. Moiseenko, V.V. Plusnin et al. //
Fusion Engineering and Design (26). 1995, p. 185-
190.
5. A. I. Skibenko, O. S. Pavlichenko, E.D. Volkov et al.
// Problems of Atomic Science and Technology.
Series: "Plasma Physics" (7). 2002, № 4, p. 62-64.
ОСОБЕННОСТИ ПЛАЗМЕННЫХ ФЛУКТУАЦИЙ ВО ВРЕМЯ ВЧ НАГРЕВА В ТОРСАТРОНЕ
УРАГАН-3М ДВУМЯ АЛЬФВЕНОВСКИМИ ВОЛНАМИ
О.С. Павличенко, А.И. Скибенко, Е.Д. Волков, В.Л. Бережный, В.Л. Очеретенко, В.Г. Коновалов,
А.Е. Кулага, А.П. Литвинов, И.Б. Пинос, А.В. Прокопенко, А.Н. Шаповал, О.М. Швець, С.А. Цыбенко
Трехволновое взаимодействие наблюдалось в экспериментах на торсатроне Ураган-3М. Две ВЧ антенны с
частотами Ω1 и Ω2 одновременно использовались для создания и нагрева плазмы, которая зондировалась
микроволнами, место отражения которых перекрывало почти весь радиус. При спектральном анализе
отраженных СВЧ сигналов обнаружены флуктуации плотности плазмы с частотой Ω1 – Ω2. При появлении
колебаний на частоте Ω1 – Ω2 наблюдалось подавление НЧ флуктуаций. Микроволновое зондирование является
полезным средством для изучения их влияния на поведение плазмы и, возможно, для воссоздания профиля
поглощения ВЧ мощности.
ОСОБЛИВІСТЬ ПЛАЗМОВИХ ФЛУКТУАЦІЙ ПРОТЯГОМ ВЧ НАГРІВУ В ТОРСАТРОНІ
УРАГАН-3М ДВОМА АЛЬФВЕНІВСЬКИМИ ХВИЛЯМИ
О.С. Павличенко, A.І. Скибенко, Є.Д. Волков, В.Л. Бережний, В.Л. Очеретенко, В.Г. Коновалов,
А.Є. Кулага, А.П. Літвінов, І.Б. Пінос, О.В. Прокопенко, А.М. Шаповал, О.М. Швець, С.А. Цибенко
19
Трьоххвильова взаємодія спостерігалась в експериментах на торсатроні Ураган-3М. Дві ВЧ антени з
частотами Ω1 і Ω2 одночасно використовувались для створення і нагріву плазми, яка зондувалась мікрохвилями,
місце відбиття яких перекривало майже весь радіус. При спектральному аналізі відбитих НВЧ сигналів
виявлені флуктуації густини плазми з частотою Ω1 – Ω2. При появі коливань з частотою Ω1 – Ω2 спостерігалось
пригнічення НЧ флуктуацій. Мікрохвильове зондування є корисним засобом для вивчення їх впливу на
поведінку плазми та, можливо, для відтворення профілю поглинання ВЧ потужності.
20
|
| id | nasplib_isofts_kiev_ua-123456789-79312 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T16:11:10Z |
| publishDate | 2005 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Pavlichenko, O.S. Skibenko, A.I. Volkov, E.D. Berezhniy, V.L. Ocheretenko, V.L. Konovalov, V.G. Kulaga, A.Ye. Litvinov, A.P. Pinos, I.B. Prokopenko, A.V. Shapoval, A.N. Shvets, O.M. Tsybenko, S.A. 2015-03-31T08:19:17Z 2015-03-31T08:19:17Z 2005 Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves / O.S. Pavlichenko, A.I. Skibenko, E.D. Volkov, V.L. Berezhniy, V.L. Ocheretenko, V.G. Konovalov, A.Ye. Kulaga, A.P. Litvinov, I.B. Pinos, A.V. Prokopenko, A.N. Shapoval, O.M. Shvets, S.A. Tsybenko // Вопросы атомной науки и техники. — 2005. — № 2. — С. 17-19. — Бібліогр.: 5 назв. — англ. 1562-6016 PACS: 52.55.Hc https://nasplib.isofts.kiev.ua/handle/123456789/79312 Three wave interaction has been observed in experiments on Uragan-3M torsatron. Two RF antennas with frequencies Ω1 and Ω2 were used simultaneously for plasma production and heating. Plasma was probed by microwaves, these allowed to study reflection of microwaves at almost whole plasma radius. Spectral analysis of reflected microwaves showed an existence of plasma density fluctuation with frequency Ω1 – Ω2. The suppression of plasma low frequencies was observed, when the plasma oscillation with Ω1 – Ω2 frequency has appeared. Microwaves probing of these fluctuations is the useful tool for studies of their influence on plasma behavior and possibly RF power absorption profile. Трьоххвильова взаємодія спостерігалась в експериментах на торсатроні Ураган-3М. Дві ВЧ антени з частотами Ω1 і Ω2 одночасно використовувались для створення і нагріву плазми, яка зондувалась мікрохвилями, місце відбиття яких перекривало майже весь радіус. При спектральному аналізі відбитих НВЧ сигналів виявлені флуктуації густини плазми з частотою Ω1 – Ω2. При появі коливань з частотою Ω1 – Ω2 спостерігалось пригнічення НЧ флуктуацій. Мікрохвильове зондування є корисним засобом для вивчення їх впливу на поведінку плазми та, можливо, для відтворення профілю поглинання ВЧ потужності. Трехволновое взаимодействие наблюдалось в экспериментах на торсатроне Ураган-3М. Две ВЧ антенны с частотами Ω1 и Ω2 одновременно использовались для создания и нагрева плазмы, которая зондировалась микроволнами, место отражения которых перекрывало почти весь радиус. При спектральном анализе отраженных СВЧ сигналов обнаружены флуктуации плотности плазмы с частотой Ω1 – Ω2. При появлении колебаний на частоте Ω1 – Ω2 наблюдалось подавление НЧ флуктуаций. Микроволновое зондирование является полезным средством для изучения их влияния на поведение плазмы и, возможно, для воссоздания профиля поглощения ВЧ мощности. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Magnetic confinement Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves Особливість плазмових флуктуацій протягом ВЧ нагріву в торсатроні Ураган-3М двома альфвенівськими хвилями Особенности плазменных флуктуаций во время ВЧ нагрева в торсатроне Ураган-3М двумя альфвеновскими волнами Article published earlier |
| spellingShingle | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves Pavlichenko, O.S. Skibenko, A.I. Volkov, E.D. Berezhniy, V.L. Ocheretenko, V.L. Konovalov, V.G. Kulaga, A.Ye. Litvinov, A.P. Pinos, I.B. Prokopenko, A.V. Shapoval, A.N. Shvets, O.M. Tsybenko, S.A. Magnetic confinement |
| title | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves |
| title_alt | Особливість плазмових флуктуацій протягом ВЧ нагріву в торсатроні Ураган-3М двома альфвенівськими хвилями Особенности плазменных флуктуаций во время ВЧ нагрева в торсатроне Ураган-3М двумя альфвеновскими волнами |
| title_full | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves |
| title_fullStr | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves |
| title_full_unstemmed | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves |
| title_short | Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves |
| title_sort | peculiarities of plasma fluctuations during rf heating in uragan-3m torsatron by means of two alfven waves |
| topic | Magnetic confinement |
| topic_facet | Magnetic confinement |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/79312 |
| work_keys_str_mv | AT pavlichenkoos peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT skibenkoai peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT volkoved peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT berezhniyvl peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT ocheretenkovl peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT konovalovvg peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT kulagaaye peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT litvinovap peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT pinosib peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT prokopenkoav peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT shapovalan peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT shvetsom peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT tsybenkosa peculiaritiesofplasmafluctuationsduringrfheatinginuragan3mtorsatronbymeansoftwoalfvenwaves AT pavlichenkoos osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT skibenkoai osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT volkoved osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT berezhniyvl osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT ocheretenkovl osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT konovalovvg osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT kulagaaye osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT litvinovap osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT pinosib osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT prokopenkoav osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT shapovalan osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT shvetsom osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT tsybenkosa osoblivístʹplazmovihfluktuacíiprotâgomvčnagrívuvtorsatroníuragan3mdvomaalʹfvenívsʹkimihvilâmi AT pavlichenkoos osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT skibenkoai osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT volkoved osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT berezhniyvl osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT ocheretenkovl osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT konovalovvg osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT kulagaaye osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT litvinovap osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT pinosib osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT prokopenkoav osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT shapovalan osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT shvetsom osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami AT tsybenkosa osobennostiplazmennyhfluktuaciivovremâvčnagrevavtorsatroneuragan3mdvumâalʹfvenovskimivolnami |