Intense High-Contrast Femtosecond K-Shell X-Ray Source from Laser-Driven Ar Clusters

Journal Article · Fri May 28 04:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.215004· OSTI ID:21410705

Chen, L M; Liu, F; Wang, W M; Mao, J Y; Zhang, L; Ma, J L; Li, Y T; Wei, Z Y ^[1]; Kando, M; Bulanov, S V; Tajima, T; Kato, Y ^[2]; Sheng, Z M; Zhang, J ^[1]

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1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100080 (China)
2. Advanced Photon Research Center, Japan Atomic Energy Agency, 8-1 Umemidai Kizugawa, Kyoto 619-0215 (Japan)

Bright Ar quasimonochromatic K-shell x ray with very little background has been generated using an Ar clustering gas jet target irradiated with a 30 fs ultrahigh-contrast laser, with a measured flux of 2.2x10{sup 11} photons/J into 4{pi}. This intense x-ray source critically depends on the laser contrast and intensity. The optimization of source output with interaction length is addressed. Simulations point to a nonlinear resonant mechanism of electron heating during the early stage of laser interaction, resulting in enhanced x-ray emission. The x-ray pulse duration is expected to be only 10 fs, opening the possibility for single-shot ultrafast keV x-ray imaging applications.

• OSTI ID: 21410705
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 104; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOMIC CLUSTERS
BOSONS
CHEMICAL ANALYSIS
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
FLUX DENSITY
GASES
K SHELL
KEV RANGE
LASERS
LEPTONS
MASSLESS PARTICLES
NONDESTRUCTIVE ANALYSIS
NONMETALS
OPTIMIZATION
PHOTONS
PULSES
RADIATION SOURCES
RARE GASES
RESONANCE
X-RAY EMISSION ANALYSIS
X-RAY SOURCES