Laser pulse propagation and enhanced energy coupling to fast electrons in dense plasma gradients
文献类型：期刊论文
| 作者 | Gray, R. J.1; Carroll, D. C.1,2; Yuan, X. H.1,5; Brenner, C. M.1,2; Burza, M.3; Coury, M.1; Lancaster, K. L.2; Lin, X. X.4; Li, Y. T.4; Neely, D.1,2 |
| 刊名 | new journal of physics
 |
| 出版日期 | 2014-11-28 |
| 卷号 | 16 |
| ISSN号 | 1367-2630 |
| 关键词 | laser-plasma interaction laser pulse propagation fast electron generation |
| 产权排序 | 5 |
| 合作状况 | 国际 |
| 英文摘要 | laser energy absorption to fast electrons during the interaction of an ultra-intense (10(20) wcm(-2)), picosecond laser pulse with a solid is investigated, experimentally and numerically, as a function of the plasma density scale length at the irradiated surface. it is shown that there is an optimum density gradient for efficient energy coupling to electrons and that this arises due to strong self-focusing and channeling driving energy absorption over an extended length in the preformed plasma. at longer density gradients the laser filaments, resulting in significantly lower overall energy coupling. as the scale length is further increased, a transition to a second laser energy absorption process is observed experimentally via multiple diagnostics. the results demonstrate that it is possible to significantly enhance laser energy absorption and coupling to fast electrons by dynamically controlling the plasma density gradient. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | physics, multidisciplinary |
| 研究领域[WOS] | physics |
| 关键词[WOS] | intensity ; light ; acceleration ; absorption ; targets |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000346764200001 |
| 公开日期 | 2015-03-20 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/22428]  |
| 专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
| 作者单位 | 1.Univ Strathclyde, SUPA, Dept Phys, Glasgow G4 0NG, Lanark, Scotland 2.STFC Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England 3.Lund Univ, Dept Phys, SE-22100 Lund, Sweden 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gray, R. J.,Carroll, D. C.,Yuan, X. H.,et al. Laser pulse propagation and enhanced energy coupling to fast electrons in dense plasma gradients[J]. new journal of physics,2014,16. |
| APA | Gray, R. J..,Carroll, D. C..,Yuan, X. H..,Brenner, C. M..,Burza, M..,...&McKenna, P..(2014).Laser pulse propagation and enhanced energy coupling to fast electrons in dense plasma gradients.new journal of physics,16. |
| MLA | Gray, R. J.,et al."Laser pulse propagation and enhanced energy coupling to fast electrons in dense plasma gradients".new journal of physics 16(2014). |
入库方式： OAI收割
来源：西安光学精密机械研究所
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