A bright attosecond x-ray pulse train generation in a double-laser-driven cone target

Journal Article · Tue Jun 28 00:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4954321· OSTI ID:22596660

Hu, Li-Xiang; Yu, Tong-Pu; Shao, Fu-Qiu; Yin, Yan ^[1]; Luo, Wen ^[2]

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1. College of Science, National University of Defense Technology, Changsha 410073 (China)
2. School of Nuclear Science and Technology, University of South China, Hengyang 421001 (China)

By using full three-dimensional particle-in-cell and Monte Carlo simulations, we investigate the generation of a high-brightness attosecond x-ray pulse train in a double-laser-driven cone target. The scheme makes use of two lasers: the first high-intensity laser with a laser peak intensity 1.37 × 10{sup 20 }W/cm{sup 2} irradiates the cone and produces overdense attosecond electron bunches; the second counterpropagating weakly relativistic laser with a laser peak intensity 4.932 × 10{sup 17 }W/cm{sup 2} interacts with the produced electron bunches and a bright x-ray pulse train is generated by Thomson backscattering of the second laser off the attosecond electron bunches. It is shown that the photon flux rises by 5 times using the cone target as compared with a normal channel. Meanwhile, the x-ray peak brightness increases significantly from 1.4 × 10{sup 21}/(s mm{sup 2} mrad{sup 2} 0.1 keV) to 6.0 × 10{sup 21}/(s mm{sup 2} mrad{sup 2} 0.1 keV), which is much higher than that of the Thomson x-ray source generated from traditional accelerators. We also discuss the influence of the laser and target parameters on the x-ray pulse properties. This compact bright x-ray source may have diverse applications, e.g., the study of electric dynamics and harmonics emission in the atomic scale.

• OSTI ID: 22596660
• Journal Information: Journal of Applied Physics, Vol. 119, Issue 24; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BACKSCATTERING
BRIGHTNESS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CONES
ELECTRONS
KEV RANGE 01-10
LASERS
MONTE CARLO METHOD
PEAKS
PHOTONS
PULSES
RELATIVISTIC RANGE
THOMSON SCATTERING
THREE-DIMENSIONAL CALCULATIONS
X RADIATION
X-RAY SOURCES