干旱区生态环境知识资源中心(Arid): Plutonium gamma-ray measurements for mutual reciprocal inspections of dismantled nuclear weapons

Arid

DOI	10.2172/102365
报告编号	UCRL-JC--121105; CONF-950787--81
来源ID	OSTI_ID: 102365
	Plutonium gamma-ray measurements for mutual reciprocal inspections of dismantled nuclear weapons
	Koenig, Z.M.; Carlson, J.B.; Clark, D.; Gosnell, T.B.
英文摘要	The O`Leary-Mikhailov agreement of March 1994 stated that the U.S. and the Russian Federation would engage in mutual reciprocal inspections (MRI) of fissile materials removed from dismantled nuclear weapons. It was decided to begin with the plutonium (Pu) removed from dismantled weapons and held in storage containers. Later discussions between U.S. and Russian technical experts led to the conclusion that, to achieve the O`Leary-Mikhailov objectives, Pu MRI would need to determine that the material in the containers has properties consistent with a nuclear-weapon component. Such a property is a {sup 240}Pu/{sup 239}Pu ratio consistent with weapons-grade material. One of the candidate inspection techniques under consideration for Pu MRI is to use a narrow region (630-670 keV) of the plutonium gamma-ray spectrum, taken with a high-purity germanium detector, to determine that it is weapons-grade plutonium as well as to estimate the minimum mass necessary to produce the observed gamma-ray intensity. We developed software (the Pu600 code) for instrument control and analysis especially for this purpose. In November 1994, U.S. and Russian scientists met at the Lawrence Livermore National Laboratory for joint experiments to evaluate candidate Pu MRI inspection techniques. In one of these experiments, gamma-ray intensities were measured from three unclassified weapons-grade plutonium source standards and one reactor-grade standard (21% {sup 240}pu). Using our software, we determined the {sup 240}Pu/{sup 239}Pu ratio of these standards to accuracies within {+-}10%, which is adequate for Pu MRI. The minimum mass estimates varied, as expected, directly with the exposed surface area of the standards.
出版年	1995
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; FISSILE MATERIALS ; QUALITATIVE CHEMICAL ANALYSIS ; PLUTONIUM ; GAMMA SPECTROSCOPY ; RUSSIAN FEDERATION ; NUCLEAR WEAPONS DISMANTLEMENT ; P CODES ; NUCLEAR MATERIALS MANAGEMENT ; EXPERIMENTAL DATA
URL	http://www.osti.gov/scitech/servlets/purl/102365
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266213
推荐引用方式 GB/T 7714	Koenig, Z.M.,Carlson, J.B.,Clark, D.,et al. Plutonium gamma-ray measurements for mutual reciprocal inspections of dismantled nuclear weapons,1995.