Numerical simulation of plasma wakefield excitation by a sequence of laser pulses
The results of numeral simulation of plasma wakefield excitation by sequence of laser pulses are presented. It is shown that if laser pulses are placed through one wavelength, the accelerated bunch of electrons is formed and accelerated only after the last laser pulse. If laser pulses are placed thr...
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2013
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| Цитувати: | Numerical simulation of plasma wakefield excitation by a sequence of laser pulses / V.I. Maslov, I.N. Onishchenko, O.M. Svistun // Вопросы атомной науки и техники. — 2013. — № 1. — С. 149-151. — Бібліогр.: 8 назв. — англ. |
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irk-123456789-1092782016-11-23T03:02:31Z Numerical simulation of plasma wakefield excitation by a sequence of laser pulses Maslov, V.I. Onishchenko, I.N. Svistun, O.M. Плазменная электроника The results of numeral simulation of plasma wakefield excitation by sequence of laser pulses are presented. It is shown that if laser pulses are placed through one wavelength, the accelerated bunch of electrons is formed and accelerated only after the last laser pulse. If laser pulses are placed through two wavelengths, the electron bunch is formed and accelerated after every laser pulse. Thus the second bunch of electrons after every pulse is nonmonoenergetic or it is not formed unlike the case of one pulse. Проведено численное моделирование возбуждения кильватерных полей в плазме последовательностью лазерных импульсов. В случае последовательности лазерных импульсов, расположенных через одну длину волны, сгусток ускоряемых электронов формируется только за последним импульсом. Если лазерные импульсы расположены через две длины волны, за каждым импульсом ускоряется сгусток электронов. При этом вторые сгустки электронов за каждым импульсом не формируются в отличие от случая одного импульса или они представляют собой немоноэнергетичные пучки. Проведено чисельне моделювання збудження кільватерних полів у плазмі послідовністю лазерних імпульсів. У випадку послідовності лазерних імпульсів, розташованих через одну довжину хвилі, згусток прискорюваних електронів формується тільки за останнім імпульсом. Якщо лазерні імпульси розташовані через дві довжини хвилі, за кожним імпульсом прискорюється згусток електронів. При цьому другі згустки електронів за кожним імпульсом не формуються на відміну від випадку одного імпульсу або вони є немоноенергетичними пучками. 2013 2013 Article Numerical simulation of plasma wakefield excitation by a sequence of laser pulses / V.I. Maslov, I.N. Onishchenko, O.M. Svistun // Вопросы атомной науки и техники. — 2013. — № 1. — С. 149-151. — Бібліогр.: 8 назв. — англ. 1562-6016 PACS: 29.17.+w; 41.75.Lx http://dspace.nbuv.gov.ua/handle/123456789/109278 en Вопросы атомной науки и техники Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
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Плазменная электроника Плазменная электроника |
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Плазменная электроника Плазменная электроника Maslov, V.I. Onishchenko, I.N. Svistun, O.M. Numerical simulation of plasma wakefield excitation by a sequence of laser pulses Вопросы атомной науки и техники |
| description |
The results of numeral simulation of plasma wakefield excitation by sequence of laser pulses are presented. It is shown that if laser pulses are placed through one wavelength, the accelerated bunch of electrons is formed and accelerated only after the last laser pulse. If laser pulses are placed through two wavelengths, the electron bunch is formed and accelerated after every laser pulse. Thus the second bunch of electrons after every pulse is nonmonoenergetic or it is not formed unlike the case of one pulse. |
| format |
Article |
| author |
Maslov, V.I. Onishchenko, I.N. Svistun, O.M. |
| author_facet |
Maslov, V.I. Onishchenko, I.N. Svistun, O.M. |
| author_sort |
Maslov, V.I. |
| title |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| title_short |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| title_full |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| title_fullStr |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| title_full_unstemmed |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| title_sort |
numerical simulation of plasma wakefield excitation by a sequence of laser pulses |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| publishDate |
2013 |
| topic_facet |
Плазменная электроника |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/109278 |
| citation_txt |
Numerical simulation of plasma wakefield excitation by a sequence of laser pulses / V.I. Maslov, I.N. Onishchenko, O.M. Svistun // Вопросы атомной науки и техники. — 2013. — № 1. — С. 149-151. — Бібліогр.: 8 назв. — англ. |
| series |
Вопросы атомной науки и техники |
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2025-07-07T22:51:01Z |
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2025-07-07T22:51:01Z |
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| fulltext |
ISSN 1562-6016. ВАНТ. 2013. №1(83) 149
NUMERICAL SIMULATION OF PLASMA WAKEFIELD EXCITATION
BY A SEQUENCE OF LASER PULSES
V.I. Maslov, I.N. Onishchenko, O.M. Svistun
NSC “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
E-mail: vmaslov@kipt.kharkov.ua
The results of numeral simulation of plasma wakefield excitation by sequence of laser pulses are presented. It is
shown that if laser pulses are placed through one wavelength, the accelerated bunch of electrons is formed and
accelerated only after the last laser pulse. If laser pulses are placed through two wavelengths, the electron bunch is
formed and accelerated after every laser pulse. Thus the second bunch of electrons after every pulse is non-
monoenergetic or it is not formed unlike the case of one pulse.
PACS: 29.17.+w; 41.75.Lx
INTRODUCTION
The intense plasma wakefield excitation by a single
intense laser pulse has allowed to other authors to
achieve large accelerating field (see [1...8]). At
excitation of the wakefield by one intensive laser pulse
two bubbles are formed at certain conditions after it and
an electron bunch is accelerated in each of them. I.e. an
intensive laser pulse can form a sequence of two
accelerated electron bunches. Also after these two
bubbles wake is excited. Hence it would be useful to
enhance this wake and to use it for the electron bunch
acceleration for increase of number of accelerated
electrons. I.e. the question arises about possibility of
wakefield excitation by sequence of laser pulses. To
address this question the authors of this paper study by
numerical simulation, using fully relativistic
electromagnetic PIC code-UMKA2D3V, self -
consistent effect of three short laser pulses on the
uniform plasma with density n0=1.7458·1019 cm-3. The
amplitude of each pulse equals b=1, 3 or 5. The
amplitude is normalized on E0 = mecω0/(2πe), ω0 is the
pulse frequency. It is shown that, if laser pulses are
distributed through one wavelength of plasma
oscillations, pulses effect on the field steepening and
bunch of the accelerated electrons is formed only after
the last pulse. If laser pulses are distributed through two
wavelengths, after every pulse the electron bunch is
accelerated. Thus, as every second field steepening is
effected by a laser pulse, the second electron bunch
after every pulse is not formed unlike the case of one
pulse or it is non-monoenergetic beams. Thus, although
bubble after the last pulse is excited with a time delay
relatively to first bubble, the accelerated bunches in the
first and last bubbles can be formed approximately
simultaneously, as amplitudes of bubbles grow along
the sequence.
RESULTS OF SIMULATION
At first we consider well-known case of the
wakefield excitation by one intensive laser pulse. At
certain parameters after an intensive laser pulse two
bubbles of plasma electrons are formed and in each of
them an electron bunch is accelerated (Fig. 1). I.е. an
intensive laser pulse forms a sequence of two
accelerated electron bunches.
Also after these two plasma electron bubbles a wake
is excited (Figs. 2, 3). It would be useful, for increase of
number of accelerated electrons, to enhance and use it
for electron bunch acceleration.
Fig. 1. Two plasma electron bubbles and two electron
bunches, accelerated by one laser pulse in the time,
when the laser pulse deeply penetrated into the plasma
(see Fig. 2) t=140t0. The amplitude of pulse equals b=5.
The pulse half-duration (normalized on t0) equals tl = 1.
Its half-width (normalized on λ) equals r0 = 4. λ is the
wavelength and t0 = 2π/ω0 is the period of laser pulse. x
and y on the axes are normalized on λ
Fig. 2. Two plasma electron bubbles and two electron
bunches, accelerated by one laser pulse in the time,
when the laser pulse deeply penetrated into the plasma
Now we investigate a sequence of two laser pulses-
drivers. In the case of two laser pulses-drivers, if they
are distributed through one wavelength of plasma
oscillations, pulses effect on the field steepening and
bunch of accelerated electrons is formed only after the
last pulse (Fig. 4).
150 ISSN 1562-6016. ВАНТ. 2013. №1(83)
Fig. 3. Longitudinal component of the wakefield excited
by one laser pulse in the time, when a laser pulse deeply
penetrated into the plasma
Fig. 4. Wake perturbation from two laser pulses,
distributed through one wavelength of plasma
oscillations (through δх=10.49) in the time
t=100t0. The amplitude of each pulse equals b=3. The
half-duration of the first pulse equals tl = 1 and of the
second pulse equals tl = 2. The half-width of the first
pulse equals r0 = 4 and of the second pulse equals
r0 = 2
Fig. 5. Sequence of two electron bunches, accelerated
by a sequence of two laser pulses, distributed through
two wavelengths of plasma oscillations (through
δх=22), in the time, when laser pulses deeply
penetrated into the plasma t=140t0. The amplitudes of
both pulses equal b=3. The half-duration of the first
pulse equals tl = 1 and of the second pulse equals tl = 2.
The half-width of the first pulse equals r0 = 4 and of the
second pulse equals r0 = 2
Fig. 6. Appearance of sequence of two electron
bunches, accelerated by the sequence of two laser
pulses, in the time t=40t0. The pulses are distributed
through δх=22. The amplitudes of both pulses equal
b=3. The half-duration of the first pulse equals tl = 1
and of the second pulse equals tl = 2. The half-width of
the first pulse equals r0 = 4 and of the second pulse
equals r0 = 2
If laser pulses are distributed through two
wavelengths of plasma oscillations, after every pulse the
electron bunch is accelerated (Fig. 5). Thus, as every
second field steepening is effected by laser pulse, the
second electron bunch after every pulse is not formed
(see Fig. 5) unlike the case of one pulse or it is non-
monoenergetic bunch (see Fig. 5). Thus, although the
plasma electron bubble after the last pulse is formed
with a time delay relatively first one, the accelerated
electron bunches can be formed by the first and last
plasma electron bubbles, as it is observed,
approximately simultaneously, if amplitudes of plasma
electron bubbles grow along their sequence (Fig. 6).
Fig. 7. Wake perturbation of plasma electron density,
excited by a sequence of three laser pulses of large
intensity, in the time t=80t0. The pulses are distributed
through δх=22. The amplitudes of all pulses equal b=3.
The half-duration of the first pulse equals tl = 1 and of
the second and third pulses equal tl = 2. The half-width
of the first pulse equals r0 = 4 and of the second and
third pulses equal r0 = 2
If the third laser pulse follows after the second pulse
through two wavelengths of plasma oscillations, after
third pulse the third electron bunch is also accelerated
(Fig. 7). The wakefield, excited by a sequence of three
laser pulses of large intensity is shown in Fig. 8.
The wake perturbation from three laser pulses of
small intensity is shown in Fig. 9.
ISSN 1562-6016. ВАНТ. 2013. №1(83) 151
Fig. 8. Longitudinal wakefield, excited by sequence of
three laser pulses of large intensity
Fig. 9. Wake perturbation from three laser pulses of
small intensity in the time t=60t0. The pulses are
distributed through δх=10. The amplitudes of all pulses
equal b=1. The half-duration of all pulses equals tl = 1.
The half-width of all pulses equals r0 = 1
CONCLUSIONS
It is shown that in the case of laser pulses,
distributed through one wavelength of plasma
oscillations, bunch of accelerated electrons is formed
only after the last pulse. If laser pulses are distributed
through two wavelengths of plasma oscillations, after
every pulse the electron bunch is accelerated. Thus the
second electron bunch after every pulse is not formed
unlike the case of one pulse or it is non-monoenergetic
bunch.
REFERENCES
1. S.V. Bulanov, V.I. Kirsanov, A.S. Saharov. The limit
of electrical field of wake plasma lens // Pisma
ZhETPh. 1991, v. 53, p. 540-544.
2. W. Lu, C. Huang, M. Zhou, et al. Nonlinear theory
for relativistic plasma wakefields in the blowout
regime // Phys. Rev. Let. 2006, v. 96, p. 165002.
3. S. Krishnagopal, A.K. Upadhyay, D. Sarkar, et al.
Simulation of electron acceleration by two laser
pulses, propagating in a homogenous plasma //
Proceedings of IPAC’10. Kyoto, Japan, 2010,
p. 4059-4061.
4. X. Wang, W. Yu, M.Y. Yu, et al. Simple model for
wakefield excitation by intense short-pulse laser in
underdense plasma // Phys. Plas. 2009, v. 16,
p. 053107.
5. C.L. Chang, C.T. Hsieh, Y.C. Ho, et al. Production of
a monoenergetic electron bunch in a self-injected
laser-wakefield accelerator // Phys. Rev. E. 2007,
v. 75, p. 036402.
6. S.V. Bulanov. New epoch in the charged particle
acceleration by relativistically intense laser radiation //
Plasma Phys. Cont. Fus. 2006, v. 48, p. 29-37.
7. A.G.R. Thomas, S.P.D. Mangles, Z. Najmudin, et
al. Measurements ofWave-Breaking Radiation from a
Laser-Wakefield Accelerator // Phys. Rev. Let. 2007,
v. 98, p. 054802.
8. B. Hidding, K.U. Amthor, B. Liesfeld, et al.
Generation of quasimonoenergetic electron bunches
with 80-fs laser pulses // Phys. Rev. Let. 2006, v. 96,
p. 105004.
Article received 06.10.12
ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ВОЗБУЖДЕНИЯ КИЛЬВАТЕРНОГО ПОЛЯ В ПЛАЗМЕ
ПОСЛЕДОВАТЕЛЬНОСТЬЮ ЛАЗЕРНЫХ ИМПУЛЬСОВ
В.И. Маслов, И.Н. Онищенко, Е.Н. Свистун
Проведено численное моделирование возбуждения кильватерных полей в плазме последовательностью
лазерных импульсов. В случае последовательности лазерных импульсов, расположенных через одну длину
волны, сгусток ускоряемых электронов формируется только за последним импульсом. Если лазерные
импульсы расположены через две длины волны, за каждым импульсом ускоряется сгусток электронов. При
этом вторые сгустки электронов за каждым импульсом не формируются в отличие от случая одного
импульса или они представляют собой немоноэнергетичные пучки.
ЧИСЕЛЬНЕ МОДЕЛЮВАННЯ ЗБУДЖЕННЯ КІЛЬВАТЕРНОГО ПОЛЯ В ПЛАЗМІ
ПОСЛІДОВНІСТЮ ЛАЗЕРНИХ ІМПУЛЬСІВ
В.І. Маслов, І.М. Онищенко, О.М. Свистун
Проведено чисельне моделювання збудження кільватерних полів у плазмі послідовністю лазерних
імпульсів. У випадку послідовності лазерних імпульсів, розташованих через одну довжину хвилі, згусток
прискорюваних електронів формується тільки за останнім імпульсом. Якщо лазерні імпульси розташовані
через дві довжини хвилі, за кожним імпульсом прискорюється згусток електронів. При цьому другі згустки
електронів за кожним імпульсом не формуються на відміну від випадку одного імпульсу або вони є
немоноенергетичними пучками.
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