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1.广东省测试分析研究所
2.中国计量院分院
3.北京1044信箱
收稿日期:1983-11-10,
纸质出版日期:1985-12
移动端阅览
温祝堂, 蒋礼晋, 钟炳南, 等. 光子剂量计对14.5MeV中子的相对灵敏度(
Zhutang Wen, Lijin Jiang, Bingnan Zhong, et al. Measurement of the relative neutron sensitivity (
在
n
-
γ
混合场中,普遍采用双探测器测量生物组织的中子吸收剂量
[1]
。当用组织等效电离室(
T
)和光子剂量计(
U
)组合,测量中子吸收剂量(
D
n
)和伴随的
γ
剂量(
D
γ
)时,将有如下方程组:
This paper describes the principle and method for determining the relative neutron sensitivity (
K
U
) of the photon dosimeters. With a modified lead attenuation method
the
K
U
values of a 2cm
3
C-CO
2
(FWT
IC-17G) and a 3cm
3
Al-Ar (FWT
IC-17A1) chambers were determined as 0.271±0.021 and 0.132±0.006 respectively.
K
U
of a Geiger-muller counter (FWT
GM-2 (446)) was determined as 0.0173±0.002. Comparing these results with other experimental data one can find that the relative neutron sensitivity (
K
U
) of the photon dosimeters was
not
very sensitive to the
µ
/
f
of photon component. The uncertainty of
K
U
measured in the lead filtration method was estimated. The neutron and gamma absorbed-doses for ICRV muscle tissues in same mixed field have been measured by technique of paired detectors.
ICRU Report 26 ( 1977 ).
F. H. Attix et al ., Intern. proc. 2nd symp. on neutron dcsimetry in biology and medicine , 1975 ,p. 329 .
M. R. Cleland et al ., ibid , p. 397 .
F. M. Waterman et al ., Phys. Med. Biol ., 22 , 880 ( 1977 ).
J. H. Hough , Phys. Med. Biol ., 24 , 4 , 734 . ( 1979 ).
ICRU Report , 27 ( 1978 ).
B. J. Mijnheer et al ., Phys. Med. Biol ., 27 . 1 , 91 ( 1982 ).
J. J. Broerse , Ion chambers for neutron dosimetry , Harwood Academic publishers for the commission of the European Communities , 1980 , p. 327 .
R. Schmidt et al ., Inern. proc. 3rd symp. on neutron dosimetry in Biology and medicine , 1977 , p. 443 .
Katsuhisa Kudo , Phys. Med. Biol ., 27 . 7 , 905 ( 1982 ).
J. J. Broerse et al ., Brit. J. Radiol , 54 , 882 ( 1981 ).
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