用于中子剂量测定的水热计。

A water calorimeter for neutron dosimetry.

作者信息

Galloway G, Greening J R, Williams J R

出版信息

Phys Med Biol. 1986 Apr;31(4):397-406. doi: 10.1088/0031-9155/31/4/005.

Abstract

A water calorimeter has been used for the direct measurement of absorbed dose to water in a d(15) + Be neutron beam. The absorbed dose measured with the calorimeter was compared with that measured with an Exradin ionisation chamber, constructed of A-150 plastic. The doses measured by the ionisation chamber were calculated according to the European (ECNEU) protocol. Absorbed dose to tissue measured with the calorimeter was 4.3% lower than that measured with the ionisation chamber. Relative to ionisation chamber dosimetry, dose measurements with the calorimeter in the neutron beam were 9% lower than similar measurements in 4 and 9 MV photon beams. The significance of the results is discussed in terms of the heat defect in water.

摘要

一种水热计已被用于直接测量d(15)+铍中子束中水中的吸收剂量。将用该热计测量的吸收剂量与用由A - 150塑料制成的Exradin电离室测量的吸收剂量进行了比较。电离室测量的剂量根据欧洲（ECNEU）协议进行计算。用热计测量的组织吸收剂量比用电离室测量的低4.3%。相对于电离室剂量测定法，热计在中子束中的剂量测量比在4和9兆伏光子束中的类似测量低9%。根据水中的热缺陷讨论了结果的意义。