来自RESIK的氩的太阳光谱绝对丰度
A solar spectroscopic absolute abundance of argon from RESIK
摘要：
利用CORONAS-F航天器上的RESIK X射线谱仪对3.949埃和3.733埃的类He和类H Ar（Ar XVII和Ar XVIII）谱线的观测，结合GOES两个通道的温度和发射测量，分析了日冕耀斑等离子体中Ar的丰度。线通量每单位排放量的措施显示温度的依赖性，如从理论上预测，并导致光谱确定的绝对Ar丰度值，A（Ar）= 6.44 pm 0.07（Ar XVII）和6.49 pm 0.16（Ar XVIII），这是在协议内的不确定性。加权平均值为6.45 pm 0.06，这是最近的两个汇编之间的太阳Ar丰度，并建议光球和日冕的Ar丰度是非常相似的。
英文摘要：
Observations of He-like and H-like Ar (Ar XVII and Ar XVIII) lines at 3.949 Angstroms and 3.733 Angstroms respectively with the RESIK X-ray spectrometer on the CORONAS-F spacecraft, together with temperatures and emission measures from the two channels of GOES, have been analyzed to obtain the abundance of Ar in flare plasmas in the solar corona. The line fluxes per unit emission measure show a temperature dependence like that predicted from theory, and lead to spectroscopically determined values for the absolute Ar abundance, A(Ar) = 6.44 pm 0.07 (Ar XVII) and 6.49 pm 0.16 (Ar XVIII) which are in agreement to within uncertainties. The weighted mean is 6.45 pm 0.06, which is between two recent compilations of the solar Ar abundance and suggest that the photospheric and coronal abundances of Ar are very similar.
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