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Hard X-ray generation using femtosecond irradiation of PbO glass |
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| Authors: | Koji Hatanaka Ken-ichiro Yomogihata Hiroshi Ono Kei Nagafuchi Hiroshi Fukumura Michiko Fukushima Tomohiro Hashimoto Saulius Juodkazis Hiroaki Misawa |
| Affiliation: | 1. Center for Ultrafast Intense Laser Science, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan;2. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan;3. Department of Basic Sciences, Ishinomaki Senshu University, Ishinomaki 986-8580, Japan;4. Ohara Inc., 15-30, Oyama 1-chome, Sagamihara-shi, Kanagawa 229-1186, Japan;5. Research Institute for Electronic Science, Hokkaido University, North 21, West 10, CRIS Building, Kita-ku, Sapporo 001-0021, Japan |
| Abstract: | We have generated hard X-rays by front- and back-side femtosecond laser irradiation of PbO-rich glass. The actual Pb content of glasses was corroborated by Pb M-line emission intensities with an uncertainty of less than 20%. The elements K and As at concentrations of a few mol% were detected. X-ray generation by back-side irradiation helped to avoid an air breakdown; however, self-focusing and filamentation limited the achievable light intensity and effectiveness of X-ray generation. Characteristics and mechanisms of X-ray generation from the front- and back-side of glasses are discussed. |
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