| Measurement of conversion efficiency of soft X-ray from 0.35μm laser-irradiated aluminum planar targets |
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| 基金项目： | Project suppoted by Shanghai Leading Academic Discipline Foundation （Grant No. T0104）, and Science Foundation of Shanghai Mtmicipal Commission of Education （Grant No. 214680） |
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| 摘 要： | Conversion efficiency of soft X-ray from 0.35 μm pulse laser-irradiated aluminium planar target at laser intensities 1013–1015 W/cm2 on the Xingguang-II facility (laser energy 5–90 J, focal spot ⊃ Ф 200 μm full width of half maximun (FWHM) 400–800 ps) was measured. A simple model was given to explain soft X-ray conversion efficiency. In this model, because of the heat conduction from the laser-heated spot, the conversion was very small at lower irradiance limit, while at higher limit it was bounded by the energy lost in blow off plasma. Consequently, at the laser intensity around 2×1014 W/cm2, the X-ray conversion efficiency reaches a maximum. Project suppoted by Shanghai Leading Academic Discipline Foundation (Grant No. T0104), and Science Foundation of Shanghai Municipal Commission of Education (Grant No. 214680)
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| 关 键 词： | 软X射线 转换效率 热传导 铝 激光照射 |
| 文章编号： | 1007-6417（2006）03-0224-04 |
| 收稿时间： | 2004-09-16 |
| 修稿时间： | 2005-01-14 |
Measurement of conversion efficiency of soft X-ray from 0.35 µm laser-irradiated aluminum planar targets |
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| Shu-xi Ren,Hong-liang Ma Ph. D.,Rong-qing Yi,Shen-ye Liu. Measurement of conversion efficiency of soft X-ray from 0.35 µm laser-irradiated aluminum planar targets[J]. Journal of Shanghai University(English Edition), 2006, 10(3): 224-227. DOI: 10.1007/s11741-006-0119-1 |
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| Authors: | Shu-xi Ren Hong-liang Ma Ph. D. Rong-qing Yi Shen-ye Liu |
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| Affiliation: | (1) Department of Physics, College of Sciences, Shanghai University, 200444 Shanghai, P.R. China;(2) Instrumental Analysis and Research Cente, Shanghai University, 200444 Shanghai, P.R. China;(3) State Key Laboratory of Laser Fusion, Mianyan, P. O. Box 986, 621900 Mianyan, P.R. China |
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| Abstract: | Conversion efficiency of soft X-ray from 0.35 μm pulse laser-irradiated aluminium planar target at laser intensities 1013–1015 W/cm2 on the Xingguang-II facility (laser energy 5–90 J, focal spot ⊃ Ф 200 μm full width of half maximun (FWHM) 400–800 ps) was measured. A simple model was given to explain soft X-ray conversion efficiency. In this model, because of the heat conduction from the laser-heated spot, the conversion was very small at lower irradiance limit, while at higher limit it was bounded by the energy lost in blow off plasma. Consequently, at the laser intensity around 2×1014 W/cm2, the X-ray conversion efficiency reaches a maximum. Project suppoted by Shanghai Leading Academic Discipline Foundation (Grant No. T0104), and Science Foundation of Shanghai Municipal Commission of Education (Grant No. 214680) |
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| Keywords: | soft X-ray conversion efficiency heat conduction. |
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