| 氩团簇高信噪比13—23nm软x射线辐射谱实验观察 |
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| 引用本文： | 程元丽,赵永蓬,肖亦凡,夏元钦,陈建新,王骐.氩团簇高信噪比13—23nm软x射线辐射谱实验观察[J].物理学报,2003,52(10):2453-2456. |
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| 作者姓名： | 程元丽 赵永蓬 肖亦凡 夏元钦 陈建新 王骐 |
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| 作者单位： | 哈尔滨工业大学可调谐激光技术国家级重点实验室,哈尔滨 150001 |
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| 基金项目： | 国家863高技术资助的课题. |
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| 摘 要： | 用150fs的掺钛蓝宝石激光系统, 在功率密度约为5×1015 W/cm2时 激励氩(Ar)团簇，利用具有空间分辨能力的平场光栅谱仪观察到13—23nm波段Ar的软x射线谱，并观察到Ar的11阶离子谱线.在较宽的激光脉宽和较低的激光功率密度情况下，通过激励Ar团簇，获得 了Ar的高阶电离度的实验结果，且谱线的信噪比明显好于光场感应电离的情况，说明团簇的 形成大幅度地提高了激光能量的吸收效率.
关键词：
Ar团簇
超短强激光
软x射线辐射
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| 关 键 词： | Ar团簇 超短强激光 软x射线辐射 |
| 文章编号： | 1000-3290/2003/52(10)/2453-04 |
| 收稿时间： | 2002-12-26 |
| 修稿时间： | 2002年12月26 |
Soft-x-ray emission from Ar clusters irradiated by 150fs laser pulses |
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| Cheng Yuan-Li,Zhao Yong-Peng,Xiao Yi-Fan,Xia Yuan-Qin,Chen Jian-Xin and Wang Qi.Soft-x-ray emission from Ar clusters irradiated by 150fs laser pulses[J].Acta Physica Sinica,2003,52(10):2453-2456. |
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| Authors: | Cheng Yuan-Li Zhao Yong-Peng Xiao Yi-Fan Xia Yuan-Qin Chen Jian-Xin and Wang Qi |
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| Abstract: | Soft x-ray emission from Ar clusters irradiated by intense 150 fs laser pulses a t an intensity of～5×1015 W/cm2 has been measured with a flat field spe ctrometer. Strong transitions from ArⅧ charge states have been observed, some s pectral lines belong to ArⅫ and ArⅩⅢ. Compared with optical field ionization, the interaction of intense laser pulse with clusters enhances drastically the a bsorption of laser energy and higher charge states are obtained as well. The sig nificant change in the spectrum is attributed to the collisinal heating of small -sized Ar clusters formed at on enough baking pressure of gas. |
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| Keywords: | Ar clusters intense laser soft-x-ray |
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