MEASUREMENT OF COSMOGENIC RADIONUCLIDES IN METEORITES WITH A SENSITIVE GAMMA-RAY SPECTROMETER

被引：16

作者：

BONINO, G

CASTAGNOLI, GC

BHANDARI, N

机构：

[1] Istituto di Cosmogeofisica del CNR, Torino

[2] Istituto di Fisica Generale dell'Università, Torino

[3] Physical Research Laboratory, Ahmedabad

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA C-GEOPHYSICS AND SPACE PHYSICS | 1992年 / 15卷 / 01期

关键词：

Cosmic-ray effects in meteorites and terrestrial matter; Instrumentation and techniques for geophysical research; X- and γ-ray instruments and techniques;

D O I：

10.1007/BF02507775

中图分类号：

学科分类号：

摘要：

A large-volume HPGe gamma-ray spectrometer in a NaI(Tl) well has been set up underground at 70 m.w.e. depth for whole body counting of cosmogenic radionuclides in meteorites. The detectors are housed in a 20 cm thick lead shield with a lining of cadmium and OFHC copper. The scintillator is simultaneously operated in anticoincidence as well as in coincidence in selected energy channels to achieve low background levels (in the range of counts per day) and high specificity. In this way a large number of radionuclides such as Al-26, Ti-44, Co-60, Na-22, Mn-54, and shorter-lived nuclides produced in extraterrestrial materials like meteorites and lunar rocks can be analysed. Results on Bouvante and Bereba achondrites and Dhajala and Torino chondrites are presented.

引用

页码：99 / 104

页数：6

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