@article{oai:nagano-nct.repo.nii.ac.jp:00000503,
 author = {古川, 万寿夫},
 journal = {長野工業高等専門学校紀要},
 month = {Dec},
 note = {application, A scattered γ-ray method was investigated to determine ash content in coal. The R/C value, ratio of Rayleigh to Compton scattered γ-ray, is related to the effective atomic number which corresponds with the element composition in coal. In this paper, the theoretical R/C value was calculated under varing with the change in ash content. It was shown unquantitatively at even constant ash content that the R/C value varies with the change in content of ash such as Fe_2O_3, CaO and others.},
 pages = {97--104},
 title = {散乱γ線法による石炭灰分計量における石炭組成比の影響について},
 volume = {20},
 year = {1989}
}