Energy partition, gamma-ray emission, and radiation reaction in the near-quantum electrodynamical regime of laser-plasma interaction
文献类型：期刊论文
| 作者 | Ji, L. L.; Pukhov, A.; Nerush, E. N.; Kostyukov, I. Yu.; Shen, B. F.; Akli, K. U. |
| 刊名 | phys. plasmas
 |
| 出版日期 | 2014 |
| 卷号 | 21期号:2页码:23109 |
| 通讯作者 | ji, ll (reprint author), univ dusseldorf, inst theoret phys 1, d-40225 dusseldorf, germany. |
| 英文摘要 | when extremely intense lasers (i >= 10(22) w/cm(2)) interact with plasmas, a significant fraction of the pulse energy is converted into photon emission in the multi-mev energy range. this emission results in a radiation reaction (rr) force on electrons, which becomes important at ultrahigh intensities. using three-dimensional particle-in-cell simulations which include a quantum electrodynamics model for the gamma-photons emission, the corresponding rr force and electron-positron pair creation, the energy partition in the laser-plasma system is investigated. at sufficiently high laser amplitudes, the fraction of laser energy coupled to electrons decreases, while the energy converted to gamma-photons increases. the interaction becomes an efficient source of gamma-rays when i > 10(24) w/cm(2), with up to 40% of the laser energy converted to high-energy photons. a systematic study of energy partition and gamma-photon emission angle shows the influence of laser intensity and polarization for two plasma conditions: high-density carbon targets and a low-density hydrogen targets. we find that in the opaque region, the laser-to-photon conversion efficiency scales as i-0(3/2) for linearly polarized and i-0(2-2.5) for circularly polarized lasers, respectively. in the relativistically transparent regime, the power-laws merge into i-0(1/2) for both polarizations and photon emission peaks in the forward direction with a relatively small divergence angle (<20 degrees), resulting in a collimated gamma-ray beam. (c) 2014 aip publishing llc. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 版本 | 出版稿 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/13288]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 作者单位 | 1.[Ji, L. L. 2.Pukhov, A.] Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany 3.[Ji, L. L. 4.Shen, B. F.] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China 5.[Pukhov, A. 6.Nerush, E. N. 7.Kostyukov, I. Yu.] Lobachevs |
| 推荐引用方式 GB/T 7714 | Ji, L. L.,Pukhov, A.,Nerush, E. N.,et al. Energy partition, gamma-ray emission, and radiation reaction in the near-quantum electrodynamical regime of laser-plasma interaction[J]. phys. plasmas,2014,21(2):23109. |
| APA | Ji, L. L.,Pukhov, A.,Nerush, E. N.,Kostyukov, I. Yu.,Shen, B. F.,&Akli, K. U..(2014).Energy partition, gamma-ray emission, and radiation reaction in the near-quantum electrodynamical regime of laser-plasma interaction.phys. plasmas,21(2),23109. |
| MLA | Ji, L. L.,et al."Energy partition, gamma-ray emission, and radiation reaction in the near-quantum electrodynamical regime of laser-plasma interaction".phys. plasmas 21.2(2014):23109. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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