Monochromatic X-Ray Emission from Laser Produced Plasma with A Clean Ultra-Short Laser Pulse

Zhang, Zhe; Nishikino, Masaharu; Nishimura, Hiroaki; Kawachi, Tetsuya; Sagisaka, A.; Orimo, Satoshi; Pirozhkov, Alexander S.; Yogo, Akifumi; Okano, Yasuaki; Ohshima, S.; Fujioka, Shinsuke; Kiriyama, Hiromitsu; Kondo, Kiminori

doi:10.2184/lsj.38.698

The Review of Laser Engineering

2010

DOI: 10.2184/lsj.38.698

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Monochromatic X-Ray Emission from Laser Produced Plasma with A Clean Ultra-Short Laser Pulse

Zhe Zhang

Masaharu Nishikino²,

Hiroaki Nishimura

et al.

Abstract: Monochromatic X-ray generation from Cu plates was experimentally studied by using a high contrast femtosecond laser pulse. Absolute yield of Kα line at 8 keV was measured as a function of laser pulse contrast ratio and irradiation intensity. The conversion efficiency of 8.5 10 5 /sr, the highest value ever obtained, has been demonstrated at 5.5 10 16 W/cm 2 with a contrast ratio of 10 11 .

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Application of Laser-Driven Monochromatic X-Ray to Radiobiology

Nishimura¹,

Teshima²

2010

The Review of Laser Engineering

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Feasibility study of laser-produced monochromatic x-ray pulses for application to radiobiology is reviewed. The x-ray source has salient features such as ultra-short duration in time, emission from a tiny point in space, and a monochromatic spectrum in energy, thus provides us a new method, hardly attained with conventional radiation sources, to explore studies radiobiological response of alive cells exposed to intense x-ray pulses. And, by choosing appropriate photon energy, infl uence of absorption depth in the cell on radiation damage can be also investigated. An x-ray microbeam system has been developed to demonstrate this idea and to irradiate cancer cells with laser-plasma x-ray pulses. Usefulness of the system on the radiobiological study is successfully confi rmed.

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Application of Laser-Driven Monochromatic X-Ray to Radiobiology

Nishimura¹,

Teshima²

2010

The Review of Laser Engineering

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Monochromatic X-Ray Emission from Laser Produced Plasma with A Clean Ultra-Short Laser Pulse

Cited by 1 publication

References 34 publications

Application of Laser-Driven Monochromatic X-Ray to Radiobiology

Application of Laser-Driven Monochromatic X-Ray to Radiobiology

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