Investigation of the influence of inner-shell photoionization and photoexcitation on the He_¦Á spectrum in photoionized plasmas

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• 作者：Feilu Wang ; David Salzmann ; Jiayong Zhong ; Guiyun Liang ; Gang Zhao ; Hideaki Takabe
• 关键词：Atomic processes ; Line formation ; Radiation mechanisms
• 刊名：High Energy Density Physics
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：9
• 期：3
• 页码：385-387
• 全文大小：260 K

文摘

The present paper investigates the influence of inner shell photoionization and photoexcitation on the He_¦Á, i.e., the 1s² to 1s2p transition in He-like ions, and the associated satellite spectra in photoionized plasmas. A comparison of the importance of these processes is made relative to other atomic processes as a function of the electron temperature and irradiation conditions. For the formation of the He_¦Á and the satellite spectra, the K-shell photoionization is found to have significant contribution under low radiation temperature and/or intensity, when lithium- and beryllium-like ions have high abundance, but highly ionized H-like ions are rare.