Diagnosis of bubble evolution in laser-wakefield acceleration via angular distributions of betatron x-rays

Journal Article · Mon Oct 20 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4900412· OSTI ID:22350942

Ma, Y.; Huang, K.; Yan, W. C. ^[1]; Hafz, N. A. M.; Zhang, J. ^[2]; Li, D. Z. ^[3]; Dunn, J. ^[4]; Sheng, Z. M. ^[2]

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1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100080 (China)
2. Key Laboratory for Laser Plasmas and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
3. Institute of High Energy Physics, CAS, Beijing 100049 (China)
4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We present an indirect method to diagnose the electron beam behaviors and bubble dynamic evolution in a laser-wakefield accelerator. Four kinds of typical bubble dynamic evolution and, hence, electron beam behaviors observed in Particle-In-Cell simulations are identified correspondingly by simultaneous measurement of distinct angular distributions of the betatron radiation and electron beam energy spectra in experiment. The reconstruction of the bubble evolution may shed light on finding an effective way to better generate high-quality electron beams and enhanced betatron X-rays.

• OSTI ID: 22350942
• Journal Information: Applied Physics Letters, Vol. 105, Issue 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCELERATION
ANGULAR DISTRIBUTION
BETATRONS
ELECTRON BEAMS
ENERGY SPECTRA
LASER RADIATION
SIMULATION
VISIBLE RADIATION
WAKEFIELD ACCELERATORS
X RADIATION