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Records in ultra low radioactivity measurements with neutron activation analysis

Authors
Journal
Nuclear Physics B - Proceedings Supplements
0920-5632
Publisher
Elsevier
Publication Date
Volume
78
Identifiers
DOI: 10.1016/s0920-5632(99)00532-0
Keywords
  • Part 2. Passive Physics Experiments
Disciplines
  • Chemistry
  • Physics

Abstract

Abstract Neutron Activation Analysis has emerged to be an analytical method sensitive enough to detect fg/g traces of unstable primordial nuclides in complex matrices. Especially low count rate experiments in the field of solar neutrino physics and dark matter search can profit from the detection capabilities of this method which had been unattained so far. This gain in sensitivity has been achieved by combining neutron activation, radiochemical separation methods, and efficient low level counting systems at the new underground laboratory of the accelerator laboratory in Garching. Recent improvements which have been made in the purification and analysis of the liquid scintillator, as foreseen for the solar neutrino experiment BOREXINO, are being presented as an example in this paper

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