在暴露于癌症治疗束的水模体中进行高达60兆电子伏特的原位中子能谱分析。

In situ neutron spectrometry to 60 MeV in a water phantom exposed to a cancer therapy beam.

作者信息

Crout N M, Fletcher J G, Green S, Scott M C, Taylor G C

机构信息

Medical Physics Group, School of Physics and Space Research, University of Birmingham, UK.

出版信息

Phys Med Biol. 1991 Apr;36(4):507-19. doi: 10.1088/0031-9155/36/4/008.

DOI:10.1088/0031-9155/36/4/008

PMID:1904584

Abstract

In-air and in-phantom neutron spectra have been measured between 10 and 60 MeV for two field sizes on the Clatterbridge cyclotron by unfolding the response of a specially built NE213 scintillator. The in-phantom measurements show distinct spectral hardening with depth, which is reflected in changes in the spectrum-averaged mean neutron energy. These findings are confirmed using Monte Carlo calculations.

摘要

通过对特制的NE213闪烁体的响应进行解卷积，在克拉特布里奇回旋加速器上测量了两种射野尺寸下10至60 MeV的空气中和模体中的中子能谱。模体中的测量结果显示，随着深度增加，谱线有明显的硬化现象，这反映在谱平均中子能量的变化上。使用蒙特卡罗计算证实了这些发现。