Plasma accelerator using two laser pulses for UED application

2021 ◽  
Author(s):  
Minseok Kim ◽  
Myung Hoon Cho ◽  
Inhyuk Nam ◽  
Sihyeon Lee ◽  
Hyyong Suk ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Plasma Accelerator

scholarly journals A laser-plasma accelerator driven by two-color relativistic femtosecond laser pulses

2019 ◽  
Vol 5 (11) ◽  
pp. eaav7940 ◽  
Author(s):  
Song Li ◽  
Guangyu Li ◽  
Quratul Ain ◽  
Min Sup Hur ◽  
Antonio C. Ting ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Plasma ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Theoretical Work ◽  
Femtosecond Laser Pulses ◽  
Plasma Accelerator ◽  
Positron Energy ◽  
Potential Applications ◽  
Laser Plasma Accelerator

A typical laser-plasma accelerator (LPA) is driven by a single, ultrarelativistic laser pulse from terawatt- or petawatt-class lasers. Recently, there has been some theoretical work on the use of copropagating two-color laser pulses (CTLP) for LPA research. Here, we demonstrate the first LPA driven by CTLP where we observed substantial electron energy enhancements. Those results have been further confirmed in a practical application, where the electrons are used in a bremsstrahlung-based positron generation configuration, which led to a considerable boost in the positron energy as well. Numerical simulations suggest that the trailing second harmonic relativistic laser pulse is capable of sustaining the acceleration structure for much longer distances after the preceding fundamental pulse is depleted in the plasma. Therefore, our work confirms the merits of driving LPAs by two-color pulses and paves the way toward a downsizing of LPAs, making their potential applications in science and technology extremely attractive and affordable.

scholarly journals Monoenergetic electron beam generation from a laser-plasma accelerator

2006 ◽  
Vol 24 (1) ◽  
pp. 95-100 ◽  
Author(s):  
K. KOYAMA ◽  
M. ADACHI ◽  
E. MIURA ◽  
S. KATO ◽  
S. MASUDA ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Pulses ◽  
Plasma Accelerator ◽  
Energy Spectra ◽  
Gas Jet ◽  
Monoenergetic Electron ◽  
Satellite Peak ◽  
Supersonic Gas Jet ◽  
Laser Plasma Accelerator ◽  
Monoenergetic Electron Beam

We have demonstrated the acceleration of a monoenergetic electron beam by a laser-produced wakefield. Experiments were performed by focusing 2-TW laser pulses of 50 fs on supersonic gas-jet targets. The focused intensity was 5 × 1018 W/cm2 (a0 = 1.5). At an electron density of 1.5 × 1020 cm−3, the clear monoenergetic electron beam from the plasma was obtained at 7 to 15 MeV. The Stokes satellite peak in the forward scattering explained the energy spectra of electrons at various plasma densities well. Although the wakefield propagated 500 microns, which was far beyond the dephasing length, monoenergetic electron beams were obtained.

scholarly journals Colliding Laser Pulses for Laser-Plasma Accelerator Injection Control

2010 ◽  
Author(s):  
G. R. Plateau ◽  
C. G. R. Geddes ◽  
N. H. Matlis ◽  
E. Cormier-Michel ◽  
D. E. Mittelberger ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Laser Pulses ◽  
Plasma Accelerator ◽  
Injection Control ◽  
Laser Plasma Accelerator

Laser plasma accelerator driven by a super-Gaussian pulse

2012 ◽  
Vol 78 (4) ◽  
pp. 447-453 ◽  
Author(s):  
TOBIAS OSTERMAYR ◽  
STEFAN PETROVICS ◽  
KHALID IQBAL ◽  
CONSTANTIN KLIER ◽  
HARTMUT RUHL ◽  
...  
Keyword(s):  
Beam Quality ◽  
Laser Pulses ◽  
Plasma Accelerator ◽  
Beam Dynamics ◽  
High Luminosity ◽  
Laser Wakefield ◽  
Laser Plasma Accelerator ◽  
Beam Instabilities ◽  
Wakefield Accelerator ◽  
Electron Beam Dynamics

AbstractA laser wakefield accelerator (LWFA) with a weak focusing force is considered to seek improved beam quality in LWFA. We employ super-Gaussian laser pulses to generate the wakefield and study the behavior of the electron beam dynamics and synchrotron radiation arising from the transverse betatron oscillations through analysis and computation. We note that the super-Gaussian wakefields radically reduce the betatron oscillations and make the electron orbits mainly ballistic over a single stage. This feature permits to obtain small emittance and thus high luminosity, while still benefitting from the low-density operation of LWFA (Nakajima et al. 2011 Phys. Rev. ST Accel. Beams14, 091301), such as the reduced radiation loss, less number of stages, less beam instabilities, and less required wall plug power than in higher density regimes.

Causal heat transport induced by zeptosecond laser pulses

2002 ◽  
Vol 12 (3) ◽  
pp. 201-206 ◽  
Author(s):  
Janina Marciak-Kozłowska ◽  
Mirosław Kozłowski
Keyword(s):  
Heat Transport ◽  
Laser Pulses

Transient collisional excitation X-ray laser generation with picoseconds laser pulses

2001 ◽  
Vol 11 (PR2) ◽  
pp. Pr2-39-Pr2-42 ◽  
Author(s):  
M. Kado ◽  
T. Kawachi ◽  
N. Hasegawa ◽  
M. Tanaka ◽  
K. Sukegawa ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Laser Generation ◽  
Collisional Excitation ◽  
X Ray

Hard X-ray radiation and fast particle generation using multiterawatt laser pulses

1999 ◽  
Vol 169 (1) ◽  
pp. 72 ◽  
Author(s):  
Aleksandr A. Andreev ◽  
V.E. Yashin ◽  
Aleksandr V. Charukhchev
Keyword(s):  
Laser Pulses ◽  
Fast Particle ◽  
X Ray ◽  
Particle Generation
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