CALORIMETER FOR THE MEASUREMENT OF THE ACTIVITY OF TRITIUM AND OTHER PURE BETA EMITTERS.

被引：16

作者：

Genka, Tsugo ^{[1
]}

Kobayashi, Katsutoshi ^{[1
]}

Hagiwara, Seiichi ^{[1
]}

机构：

[1] JAERI, Tokai, Jpn, JAERI, Tokai, Jpn

来源：

International journal of radiation applications and instrumentation. Part A, Applied radiation and isotopes | 1987年 / 38卷 / 10期

关键词：

CHARGED PARTICLES - Measurements - TRITIUM - Radioactivity;

D O I：

10.1016/0883-2889(87)90182-1

中图分类号：

学科分类号：

摘要：

A microcalorimeter is described which was developed and tested for measuring the activity of pure beta -particle emitters. Two identically made calorimeter cells are used, each 46. 5-mm i. d. and 54. 0-mm deep and each fitted with thermomodules of which the outputs are connected in opposing polarities, the net output being amplified and this voltage signal is used to estimate the radioactivity in the sample. Each cell contains a manganin heating wire (100. 0 OMEGA plus or minus 0. 1 OMEGA ) and the three sensors which are made of semi-conducting material. The thermal energy for the cells flows into a surrounding mass of aluminium (15 kg) embedded in 30-mm-thick styrofoam. The entire assembly is then immersed into an open thermostatic bath controlled by electric heaters an arrangement which facilitates access for sample charging.

引用

页码：845 / 850