INDIRECT EVIDENCE OF SOFT X-RAY POPULATION INVERSION

被引：0
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作者：
卢仁祥
毛楚生
机构：
[1] Shanghai Institute of Optics and Fine Mechanics
[2] Academia Sinica
[3] Academia
来源：
Science in China,Ser.A. | 1984年 / Ser.A.1984卷 / 11期
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摘要：
<正> Using high-power Nd-glass laser focusing (100 ps. 1011 W) to bombard a Mg target witha copper cold trap, we have observed indirect evidence of inverted populations between n=4and n=3 levals of helium-like Mg ions, the corresponding wavelength of which is 154.6 ?.Given the condition of the laser plasma being a corona model,N4 = 2.8N3, when the self-absorption of radiation is not counted; N4 = 2. 2N3, △N = 2.7×1013/cm3, g = 0. 26cm-1, whenthe self-absorption is counted.
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