1. Efficient multi-keV X-ray generation from high-contrast laser plasma interaction.
- Author
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Zhang, Z., Nishimura, H., Nishikino, M., Sunahara, A., Johzaki, T., Cai, H. B., Kawachi, T., Pirozhkov, A. S., Sagisaka, A., Orimo, S., Ogura, K., Yogo, A., Okano, Y., Ohshima, S., Fujioka, S., Kiriyama, H., Kondo, K., Shimomura, T., and Kanazawa, S.
- Subjects
FEMTOSECOND lasers ,LASERS ,IRRADIATION ,X-rays ,SPECTRAL irradiance - Abstract
Kα line emission from Mo was experimentally and theoretically studied using clean, ultrahigh-intensity femtosecond laser pulses. The absolute yields of Kα x-rays at 17 keV from Mo were measured as a function of the laser pulse contrast ratio and irradiation intensity. Significantly enhanced Kα yields were obtained by employing high contrast ratio at optimum irradiance. Conversion efficiencies of 4.28 x 10
-5 /sr, the highest values obtained to date, was demonstrated with contrast ratios in the range of 10-10 to 10-11 . [ABSTRACT FROM AUTHOR]- Published
- 2013
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