@inproceedings{oai:repo.qst.go.jp:00053747,
 author = {山形, 文子 and 稲庭, 拓 and 河野, 俊之 and 富谷, 武浩 and 浦壁, 恵理子 and 佐藤, 眞二 and 金澤, 光隆 and 金井, 達明 and 山形 文子 and 稲庭 拓 and 河野 俊之 and 富谷 武浩 and 佐藤 眞二 and 金澤 光隆 and 金井 達明},
 book = {Proceedings of the Symposium on Accelerator and Related Technology for Application},
 month = {Jun},
 note = {We proposed application of the maximum likelihood estimation (MLE) method for determination of the range of incident ions in a target.  To demonstrate the effectiveness of the method with experiments, we performed irradiation experiments with 4 kinds of stable ion beams to a gelatinous water, a polyethylene, and a PMMA target.  The mean ranges were measured with a parallel plate ion chamber.  The annihilation events from the positron emitters generated through the reactions of incident ions with target unclei were detected with a positron camera for 500 s just after the irradiation.  To evaluate the range of 4 kinds of beams, the MLE method was applied to the annihilation gamma ray distribution.  For all the combinations of incident beams and targets, the range of incident ions could by determined within an accuracy on 1.5 mm.},
 pages = {71--72},
 title = {入射核破砕反応により生じる陽電子崩壊核を用いた照射野確認法の研究},
 volume = {8},
 year = {2006}
}