SOFT X-RAY LASING IN NEON-LIKE GERMANIUM PLASMA PRODUCED BY DOUBLE PULSE LASER OF LOWER ENERGY
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Huang Wenzhong,
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Zhang Qiren,
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Chunyu Shutai,
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Zhuang Xiuqun,
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Yang Shangjin,
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Cai Yuqin,
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He An,
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Du Fengying,
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He Shaotang,
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Hong Wei,
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Sun Yuliang,
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You Yonglu,
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Wu Deyong,
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He Yingling,
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Lu Lizhu,
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Zhang Guoping,
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Sheng Jiatian,
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Peng Huimin,
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Ye Chunfu
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Abstract
soft X-ray 3s-3p lasing transitions originating from J=0-1and J=2-1 inneon -like germanium plasma is observed about 100J pumped energy only for the first timeThe lasing plasma is produced by double pulse laser with,interval of 350ps heating 10mm longthin-film germanium targets.The line of 19.61nm(J=0-1)is more intense than that of 23.63nm(J=2-1),the divergence angle is lesser than the later.
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