Experimental evidence and theoretical analysis of photoionized plasma under x-ray radiation produced by an intense laser
文献类型：期刊论文
| 作者 | Wang, FL ; Fujioka, S ; Nishimura, H ; Kato, D ; Li, YT ; Zhao, G ; Zhang, J ; Takabe, H |
| 刊名 | PHYSICS OF PLASMAS
 |
| 出版日期 | 2008 |
| 卷号 | 15期号:7 |
| 关键词 | TRANSMISSION GRATING SPECTROMETER HIGH-POWER LASERS ACCRETION DISKS CROSS-SECTIONS INSTABILITY ASTROPHYSICS SPECTROSCOPY IONIZATION MODEL COEFFICIENTS |
| ISSN号 | 1070-664X |
| 通讯作者 | Wang, FL: Osaka Univ, Inst Laser Engn, 2-2 Yamadaoka, Suita, Osaka 5650871, Japan. |
| 中文摘要 | Photoionized plasma was studied experimentally under laboratory conditions by means of high intensity short pulse lasers. The experiment consists of a gold cavity filled with nitrogen gas. Six laser beams were focused on the inner surface of the gold cavity, thereby generating an almost black-body radiation having temperature of 80 eV inside the cavity. This radiation heats the nitrogen gas mainly by means of photoionization. L-shell emissions from N V to N VII have been observed in the wavelength range between 90 and 200 A. A time-dependent Detailed Configuration Accounting computer program has been developed to analyze the experimental spectra. In contrast to standard analysis of astrophysical observations, the evidence for photoionization is inferred from the spectral lines ratios. Comparison between the experimental and simulated line spectra indicates that the radiation heated nitrogen attains temperature of 20-30 eV, much lower than the source radiation temperature. Paradoxically, it is also shown that similar line emissions can be reproduced computationally also when the radiation and plasma temperatures both equal approximately 60 eV. This misleading result indicates that experimental simulation in laboratory is sometimes necessary to avoid misinterpretation of astrophysical spectra. (C) 2008 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37778]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, FL,Fujioka, S,Nishimura, H,et al. Experimental evidence and theoretical analysis of photoionized plasma under x-ray radiation produced by an intense laser[J]. PHYSICS OF PLASMAS,2008,15(7). |
| APA | Wang, FL.,Fujioka, S.,Nishimura, H.,Kato, D.,Li, YT.,...&Takabe, H.(2008).Experimental evidence and theoretical analysis of photoionized plasma under x-ray radiation produced by an intense laser.PHYSICS OF PLASMAS,15(7). |
| MLA | Wang, FL,et al."Experimental evidence and theoretical analysis of photoionized plasma under x-ray radiation produced by an intense laser".PHYSICS OF PLASMAS 15.7(2008). |
入库方式： OAI收割
来源：物理研究所
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