Uranium and thorium thin film calibrations by particle track techniques

被引:19
|
作者
Iunes, PJ [1 ]
Hadler, JC
Bigazzi, G
Guedes, S
Zuñiga, A
Paulo, SR
Tello, CA
机构
[1] Univ Estadual Campinas, UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
[2] CNR, Ist Geosci & Georisorse, Area Ric Pisa, I-56124 Pisa, Italy
[3] Inst Peruano Energia Nucl, IPEN, Lima 41, Peru
[4] Univ Fed Mato Grosso, UFMT, Inst Ciencias Exatas & Terra, BR-78070900 Cuiaba, MT, Brazil
基金
巴西圣保罗研究基金会;
关键词
D O I
10.1023/B:JRNC.0000046778.45860.b6
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Particle track techniques, which enable estimation of the uranium and thorium contents in films where energy self-absorption is negligible, are presented. These techniques allow calibration of uranium and thorium thin films with adequate precision to be used in neutron fluence determinations for fission-track dating. Calibration via alpha particles is relatively simple for the case of uranium films, whereas for thorium films it is necessary to use the spectrometric characteristics of the employed track detector. Besides those based on alpha particles, calibration procedures via fission fragments are presented both for uranium as well as for thorium films.
引用
收藏
页码:461 / 468
页数:8
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