Soft X-ray emissions from various targets irradiated by long wavelength lasers

H. Daido; Y. Kitagawa; H. Matsunaga; H. Shiraga; F. Miki; M. Fujita; T. Yabe; H. Fujita; Y. Kato; S. Nakai; C. Yamanaka

Topical Meeting on Short Wavelength Radiation: Generation and Applications
Technical Digest Series (Optica Publishing Group, 1986),
paper TuE24

Soft X-ray emissions from various targets irradiated by long wavelength lasers

H. Daido, Y. Kitagawa, H. Matsunaga, H. Shiraga, F. Miki, M. Fujita, T. Yabe, H. Fujita, Y. Kato, S. Nakai, and C. Yamanaka

Short Wavelength Coherent Radiation: Generation and Applications 1986

Monterey, California United States
24–26 March 1986
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H. Daido, Y. Kitagawa, H. Matsunaga, H. Shiraga, F. Miki, M. Fujita, T. Yabe, H. Fujita, Y. Kato, S. Nakai, and C. Yamanaka, "Soft X-ray emissions from various targets irradiated by long wavelength lasers," in Topical Meeting on Short Wavelength Radiation: Generation and Applications, Technical Digest Series (Optica Publishing Group, 1986), paper TuE24.

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Abstract

The soft X-ray generation by intense laser irradiations (≳10¹³W/cm²)¹⁾ is one of the key issues in laser fusion and also important in the industrial applications of laser plasma. At long laser wavelengths, the X-ray conversion efficiency is lower than that at short wavelengths (0.53μm and 0.35μm), especially for plane targets because of the lateral expansion of the hot electrons. The conversion efficiency by long wavelength lasers can be improved by localizing the hot electron energy deposition to cold material using novel structure in which the inhibitions of thermal conduction and expansion loss.

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