期刊
PURE AND APPLIED GEOPHYSICS
卷 171, 期 3-5, 页码 717-734出版社
SPRINGER BASEL AG
DOI: 10.1007/s00024-012-0563-8
关键词
Noble gas; soil gas transport; CTBT; underground nuclear explosion; on-site inspection; soil gas sampling; radionuclide background
资金
- Office of Nuclear Verification, US Department of Energy [NA-243]
- Office of Proliferation Detection, US Department of Energy [NA-221]
- US Fulbright Program
- US Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
The development of a technically sound approach to detecting the subsurface release of noble gas radionuclides is a critical component of the on-site inspection (OSI) protocol under the Comprehensive Nuclear Test Ban Treaty. In this context, we are investigating a variety of technical challenges that have a significant bearing on policy development and technical guidance regarding the detection of noble gases and the creation of a technically justifiable OSI concept of operation. The work focuses on optimizing the ability to capture radioactive noble gases subject to the constraints of possible OSI scenarios. This focus results from recognizing the difficulty of detecting gas releases in geologic environments-a lesson we learned previously from the non-proliferation experiment (NPE). Most of our evaluations of a sampling or transport issue necessarily involve computer simulations. This is partly due to the lack of OSI-relevant field data, such as that provided by the NPE, and partly a result of the ability of computer-based models to test a range of geologic and atmospheric scenarios far beyond what could ever be studied by field experiments, making this approach very highly cost effective. We review some highlights of the transport and sampling issues we have investigated and complete the discussion of these issues with a description of a preliminary design for subsurface sampling that addresses some of the sampling challenges discussed here.
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