Instrumental Photon Activation Analysis With Short-Time Irradiation For Geochemical Research
MINERALS(2021)
摘要
This paper introduces instrumental photon activation analysis (IPAA) utilizing short-lived products of photonuclear reactions, mainly (gamma, n) and (gamma, p), initiated by bremsstrahlung from the MT-25 microtron. A rapid nondestructive IPAA method for geochemical major element analysis is introduced as a tool for the basic geochemical characterization of rocks. Procedures were developed and parameters such as beam energy and irradiation-decay-counting times optimized with a representative set of geochemical reference materials, and an optimized scheme was applied in analysis of various geological samples. A complete analytical scheme combined with long-time irradiation IPAA and the possibility of utilization of photoexcitation reactions (gamma, gamma ') are briefly outlined.
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关键词
IPAA, geochemical analysis, whole-rock analysis, major elements, microtron
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