@article{oai:kanazawa-u.repo.nii.ac.jp:00016466,
 author = {越田, 吉郎},
 journal = {金沢大学医学部保健学科紀要 = Memoirs of School of Health Sciences Faculty of Medicine Kanazawa University},
 month = {Dec},
 note = {A fundamental examination of X-ray spectra analysis for the improvement of clinical technique and x-ray equipment was conducted. A comparison of X-ray spectrum of the water and acrylic resin showed that the X-ray transmission ratio of acrylic resin was high for low energy regions, and low for high energy regions. This constitutes a considerable problem when acrylic resin is used. When filters made of aluminum, copper, niobium and molybdenum were in­serted, it was found that the attenuation ratios could be obtained with these fil­ters as if the attenuation ratio was calculated by using mass attenuation coefficients of Hubbell without stripping correction. The addition of the Nb and Mo filters reduced in the photons of lower x-ray energy, and transmitted the photons of high-energy x-rays. The addition of Al filter tended to have the ef­fect, but less evident, while the effect of the Cu filter was between that of Nb and Mo and of Al. The X-ray transmission ratio of the screen was also measured. For the range from 40 keV to 70keV, the orthochromatic screen should reduced the photons of x-ray, but for any other range the regular screen should reduced the photons.},
 pages = {101--109},
 title = {付加フィルタによって減弱するX線スペクトル解析のための基礎的検討},
 volume = {22},
 year = {1998}
}