洛斯阿拉莫斯介子物理设施（LAMPF）负点的微剂量测定

Microdosimetry of negative poins at LAMPF.

作者信息

Amols H I, Dicello J F, Lane T F, Pfeufer G W, Helland J A, Knowles H B

出版信息

Radiology. 1975 Jul;116(1):183-5. doi: 10.1148/116.1.183.

DOI:10.1148/116.1.183

Abstract

Lineal energy distributions and linear energy transfer (LET) spectra are being measured at the biomedical facility of the Los Alamos Scientific Laboratory for a negative pion beam having an initial momentum of 168 MeV/c. The results show that the fraction of the dose for lineal energies greater than 50 keV/mum is approximately 2% in the plateau and approximately 12% at the Bragg peak. Preliminary data indicate that the high lineal energy (and high LET) component increases significantly in the region slightly downstream from the peak.

摘要

在洛斯阿拉莫斯科学实验室的生物医学设施中，正在对初始动量为168 MeV/c的负π介子束测量线性能量分布和线性能量转移（LET）谱。结果表明，在线性能量大于50 keV/μm时，剂量分数在坪区约为2%，在布拉格峰处约为12%。初步数据表明，高线性能量（和高LET）成分在峰下游稍远处的区域显著增加。