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The X-ray spectrum of radiatively heated tracer Al in the doped foam was recorded by using a flat crystal spectrometer. The radiation thermal bath with a peak temperature of 150 eV is created inside the hohlraum irradiated by 8 laser beams, each delivering 250J. From the measured spectrum, we have observed that the intensities of jkl Li-like satellite were smaller than those of qr Li-like satellites, which is not a case usually encountered in electron collision dominated low density plasmas. The analyses of various generation and loss channels of doubly excited states indicate that in the radiatively heated plasma considered in the present work, the photo excitation and the photo ionization processes are fully responsible for the generation of doubly excited states instead of dielectronic recombination. Besides the satellite features, intercombination lines are also observed which imply the existence of a low density plasma region. Finally, we compare the calculated spectrum with the measured spectrum, and find that they are in fairly good agreement was achiered.
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Keywords:
- emission spectrum /
- radiation heating /
- spectrum diagnostics
[1] Jiang S E, Sun K X, Zheng Z J 2004 Acta Phys. Sin. 53 3413 (in Chinese) [江少恩、孙可煦、 郑志坚 2004 53 3413]
[2] Jiang S E, Sun K X, Huang T X 2004 Acta Phys. Sin. 53 1425 (in Chinese) [江少恩、孙可煦、黄天晅 2004 53 1425]
[3] Zhang Jiyan, Yang Jiaming, Xu Yan 2008 Acta Phys. Sin. 57 985 (in Chinese) [张继彦、杨家敏、许 琰 2008 57 985 ]
[4] Yang J M, Zhang J Y, Ding Y N 2007 High Power Laser and Particle Beams 19 1483 (in Chinese) [杨家敏、张继彦、丁耀南 2007 强激光与粒子束 19 1483]
[5] Gabriel A H 1972 Mon. Not. R. Astr. Soc. 160 99
[6] Salzmann D 1978 J. Appl. Phys. 49 3229
[7] Glenzer S H, Fournier K B, Decker C 2000 Phys. Rev. E 62 2728
[8] Pu Y D, Jin F T, Zhang J Y 2010 Journal of Atomic and Molecular Physics 27 (in Press) [蒲昱东、靳奉涛、张继彦 2010 原子分子 27]
[9] Vinogradov A V, Skobelev I Y, Yukov E A. 1975 Sov. J. Quant. Electron. 5 630
[10] Ramis R, Schmaltz, Meyer-ter-Vehn 1988 J. Comp. Phys. Comm. 49 475
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[1] Jiang S E, Sun K X, Zheng Z J 2004 Acta Phys. Sin. 53 3413 (in Chinese) [江少恩、孙可煦、 郑志坚 2004 53 3413]
[2] Jiang S E, Sun K X, Huang T X 2004 Acta Phys. Sin. 53 1425 (in Chinese) [江少恩、孙可煦、黄天晅 2004 53 1425]
[3] Zhang Jiyan, Yang Jiaming, Xu Yan 2008 Acta Phys. Sin. 57 985 (in Chinese) [张继彦、杨家敏、许 琰 2008 57 985 ]
[4] Yang J M, Zhang J Y, Ding Y N 2007 High Power Laser and Particle Beams 19 1483 (in Chinese) [杨家敏、张继彦、丁耀南 2007 强激光与粒子束 19 1483]
[5] Gabriel A H 1972 Mon. Not. R. Astr. Soc. 160 99
[6] Salzmann D 1978 J. Appl. Phys. 49 3229
[7] Glenzer S H, Fournier K B, Decker C 2000 Phys. Rev. E 62 2728
[8] Pu Y D, Jin F T, Zhang J Y 2010 Journal of Atomic and Molecular Physics 27 (in Press) [蒲昱东、靳奉涛、张继彦 2010 原子分子 27]
[9] Vinogradov A V, Skobelev I Y, Yukov E A. 1975 Sov. J. Quant. Electron. 5 630
[10] Ramis R, Schmaltz, Meyer-ter-Vehn 1988 J. Comp. Phys. Comm. 49 475
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