@article{oai:toyama.repo.nii.ac.jp:00006480,
 author = {松山, 政夫 and 鳥養, 祐二 and 渡辺, 国昭},
 journal = {富山大学水素同位体科学研究センター研究報告 = Annual Report of Hydrogen Isotope Research Center, Toyama University},
 month = {},
 note = {application/pdf, The  b-ray-induced X-ray spectra observed for a polymer disk (1 mm thickness), which was made of poly-methylmethacrylate labeled with tritium, were analyzed and they were reproduced by computer simulation based on the uniform distribution of tritium in the polymer disk. The X-ray spectra were measured in both helium and argon atmospheres. An X-ray spectrum observed in the helium atmosphere consisted of only a broad bremsstrahlung X-ray peak, while in the argon atmosphere a characteristic X-ray peak appeared in addition to bremsstrahlung X-rays. From differences in the shape and intensity of X-ray spectra observed in both atmospheres, the conversion fraction of the bremsstrahlung X-rays to the characteristic X-rays in an argon atmosphere was determined to be 7.1x10-2 by taking the absorption coefficient of X-rays into account. The spectra observed in both atmospheres could be reproduced quite well by using the equations to estimate generation and attenuation of X-rays in various materials. It was suggested, therefore, that a tritium depth profile in carbonaceous materials can be evaluated by the numerical simulation. Furthermore, the simulation indicated that nitrogen could be also used as a promising alternative gas of helium for evaluation of a tritium depth profile in bulk., Article},
 pages = {55--64},
 title = {厚いアクリル樹脂製のトリチウム線源で観測されたX線スペクトルの解析及びシミュレーション},
 volume = {22},
 year = {2002}
}