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Passive Time Coincidence Measurements with HEU Oxide Fuel Pins...

by Seth M Mcconchie, Paul A Hausladen, John T Mihalczo
Publication Type
Conference Paper
Book Title
INMM Annual Meeting Proceedings
Publication Date
Page Number
1
Publisher Location
Nashville, Tennessee, United States of America
Conference Name
INMM Annual Meeting
Conference Location
Nashville, Tennessee, United States of America
Conference Sponsor
INMM
Conference Date
-

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.