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Title: Method and apparatus for detecting dilute concentrations of radioactive xenon in samples of xenon extracted from the atmosphere

Abstract

A method and apparatus for measuring the concentrations of radioxenon isotopes in a gaseous sample wherein the sample cell is surrounded by N sub-detectors that are sensitive to both electrons and to photons from radioxenon decays. Signal processing electronics are provided that can detect events within the sub-detectors, measure their energies, determine whether they arise from electrons or photons, and detect coincidences between events within the same or different sub-detectors. The energies of detected two or three event coincidences are recorded as points in associated two or three-dimensional histograms. Counts within regions of interest in the histograms are then used to compute estimates of the radioxenon isotope concentrations. The method achieves lower backgrounds and lower minimum detectable concentrations by using smaller detector crystals, eliminating interference between double and triple coincidence decay branches, and segregating double coincidences within the same sub-detector from those occurring between different sub-detectors.

Inventors:
;
Publication Date:
Research Org.:
XIA LLC, Hayward, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1415445
Patent Number(s):
9,857,480
Application Number:
15/094,793
Assignee:
XIA LLC (Hayward, CA) CHO
DOE Contract Number:
SC0011301
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Apr 08
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 07 ISOTOPE AND RADIATION SOURCES

Citation Formats

Warburton, William K., and Hennig, Wolfgang G.. Method and apparatus for detecting dilute concentrations of radioactive xenon in samples of xenon extracted from the atmosphere. United States: N. p., 2018. Web.
Warburton, William K., & Hennig, Wolfgang G.. Method and apparatus for detecting dilute concentrations of radioactive xenon in samples of xenon extracted from the atmosphere. United States.
Warburton, William K., and Hennig, Wolfgang G.. 2018. "Method and apparatus for detecting dilute concentrations of radioactive xenon in samples of xenon extracted from the atmosphere". United States. doi:. https://www.osti.gov/servlets/purl/1415445.
@article{osti_1415445,
title = {Method and apparatus for detecting dilute concentrations of radioactive xenon in samples of xenon extracted from the atmosphere},
author = {Warburton, William K. and Hennig, Wolfgang G.},
abstractNote = {A method and apparatus for measuring the concentrations of radioxenon isotopes in a gaseous sample wherein the sample cell is surrounded by N sub-detectors that are sensitive to both electrons and to photons from radioxenon decays. Signal processing electronics are provided that can detect events within the sub-detectors, measure their energies, determine whether they arise from electrons or photons, and detect coincidences between events within the same or different sub-detectors. The energies of detected two or three event coincidences are recorded as points in associated two or three-dimensional histograms. Counts within regions of interest in the histograms are then used to compute estimates of the radioxenon isotope concentrations. The method achieves lower backgrounds and lower minimum detectable concentrations by using smaller detector crystals, eliminating interference between double and triple coincidence decay branches, and segregating double coincidences within the same sub-detector from those occurring between different sub-detectors.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2018,
month = 1
}

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