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J Radiat Prot > Volume 8(1); 1983 > Article
Journal of Radiation Protection 1983;8(1):26-0.
무한평판(無限平板) 조직등가(組織等價) 물질(物質)에서 광자(光子)-전자결합(電子結合) 감속(減速) 에너지 스펙트럼의 계산(計算)
정찬영;제원목;이수용;하정우;
Calculation of the Coupled Photon-Electron Slowing Down Energy Spectrum in a Homogeneous, Infinite Tissue Equivalent Material
Chung, Chan-Young;Jae, Won-Mok;Lee, Soo-Yong;Ha, Chung-Woo;
ABSTRACT
A somewhat detailed energy spectra in terms of the track length resulting from coupled electron-photon slowing down are calculated throughout the ICRU standard tissue with uniformly distributed gamma sources of $^{60}Co;and;^{137}Cs$, respectively. The calculation was accomplished by utilizing the latest available cross-section data as input to a carefully optimized computer code. In this report, the calculational method is described in detail. Furthermore, results of calculations are given in graphical form. The results show that the energy spectrum defined in terms of differential track length has about same shape although the energies of gamma source are different. The discontinuity in the energy spectrum appears at the energy of $T=(1/T_0+2/m_0c^2)^{-1}$, because a primary photon can not be degrade to a point below this energy.
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