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Radiation Protection Dosimetry Advance Access originally published online on January 12, 2006
Radiation Protection Dosimetry 2006 121(2):99-107; doi:10.1093/rpd/nci383
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Estimation of photon dose generated by a short pulse high power laser

Y. Hayashi1,*, A. Fukumi2, K. Matsukado2,4, M. Mori1, H. Kotaki1, M. Kando1, L. M. Chen1, I. Daito1, S. Kondo1, S. Kanazawa1, A. Yamazaki1,3, K. Ogura1, M. Nishiuchi1, M. Kado1, A. Sagisaka1, S. Nakamura1,3, Z. Li2, S. Orimo1, T. Homma1 and H. Daido1

1 Quantum Beam Science Directorate, Japan Atomic Energy Agency, 8-1 Umemidai, Kizu-cho, Souraku-gun, Kyoto 619-0215, Japan
2 National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
3 Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
4 Present address: Research Foundation for Opto-Science and Technology 325-6 Sunyama-cho, Hamamatu-shi, Shizuoka 430-0926, Japan

* Corresponding author: hayashi.yukio{at}jaea.go.jp

Received August 23, 2005, amended November 17, 2005, accepted December 5, 2005


  Abstract

The authors obtain a new equation to estimate the forward component of a photon dose generated through the interaction between a target and a short pulse high power laser. As the equation is quite simple, it is useful for calculating the photon dose. The equation shows that the photon dose is proportional to the electron temperature in the range >3 MeV and proportional to the square of the electron temperature in the range <3 MeV. The dose estimated with this method is roughly consistent with the result of Monte Carlo simulation. With some assumptions and corrections, it can reproduce experimental results obtained and the dose result calculated at other laboratories.


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