期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 260, 期 -, 页码 273-285出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2013.12.007
关键词
Lasers; Plasmas; Quantum electrodynamics
资金
- UK Engineering and Physical Sciences Research Council [EP/G055165/1, EP/G054940/1]
- Engineering and Physical Sciences Research Council [EP/G066752/1, EP/G054940/1, EP/I500987/1, EP/D062837/1, EP/L000237/1, EP/G055165/1] Funding Source: researchfish
- EPSRC [EP/D062837/1, EP/L000237/1, EP/G054940/1, EP/I500987/1, EP/G055165/1, EP/G066752/1] Funding Source: UKRI
In high-intensity (>10(21) W cm(-2)) laser-matter interactions gamma-ray photon emission by the electrons can strongly affect the electron's dynamics and copious numbers of electron-positron pairs can be produced by the emitted photons. We show how these processes can be included in simulations by coupling a Monte Carlo algorithm describing the emission to a particle-in-cell code. The Monte Carlo algorithm includes quantum corrections to the photon emission, which we show must be included if the pair production rate is to be correctly determined. The accuracy, convergence and energy conservation properties of the Monte Carlo algorithm are analysed in simple test problems. (C) 2013 Elsevier Inc. All rights reserved.
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