September 2008

Conference Paper

Passive Time Coincidence Measurements with HEU Oxide Fuel Pins

By:
McConchie, Seth M; Hausladen, Paul A; Mihalczo, John T
Page Number:
1
Book Title:
INMM Annual Meeting Proceedings
Publication Date:
September 5, 2008
Publisher Location:
Institute for Nuclear Materials Management, Nashville, Tennessee, United States of America
Conference Name:
INMM Annual Meeting
Conference Location:
Nashville, Tennessee, United States of America
Conference Sponsor:
INMM

Abstract

Passive time coincidence measurements have been performed on highly enriched uranium (HEU) oxide fuel pins at the Idaho National Laboratory Power Burst Facility. These experiments evaluate HEU detection capability using passive coincidence counting when utilizing moderated 3He tubes. Data acquisition was performed with the Nuclear Material Identification System (NMIS) to calculate the neutron coincidence time distributions. The amounts of HEU measured were 1 kg, 4 kg, and 8 kg in sealed 55-gallon drums. Data collected with the 3He tubes also include passive measurement of 31 kg of depleted uranium (DU) in order to determine the ability to distinguish HEU from DU. This paper presents results from the measurements.

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