کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1772670 | 1021057 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A study of the contribution of doubly excited ionic states to the properties of hot dense high-Z plasmas A study of the contribution of doubly excited ionic states to the properties of hot dense high-Z plasmas](/preview/png/1772670.png)
The role of two-electron processes, i.e. dielectronic recombination and autoionization, in the ionization balance and X-ray emission of hot dense plasmas composed of various high-Z materials is explored. Tungsten, gold, lead and uranium are considered. It is shown that the average ion charge and the high-energy emissivity are both sensitive to the dielectronic recombination rate. A systematic study demonstrates the degree of this sensitivity. It is found that the complete neglect of these 2-electron processes introduces a large error but once included, the key physical properties are quite insensitive to the rate over the important 2–3 keV temperature range. The high-energy emissivity depends strongly on temperature, peaking at conditions corresponding to a closed shell system, and on the square of the electron density, as for a coronal system.
Journal: High Energy Density Physics - Volume 7, Issue 4, December 2011, Pages 371–376