NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
gamma ray spectrometry of ldef samples at srsA total of 31 samples from Long Duration Exposure Facility (LDEF), including materials of Al, V, and steel trunnions were analyzed by ultralow level gamma spectrometry. The study quantified particle induced activations of Na-22, Sc-46, Cr-51, Mn-54, Co-56, Co-57, Co-58, and Co-60. The samples of trunnion sections exhibited increasing activity toward the outer end of the trunnion and decreasing activity toward its radial center. The trunnion sections did not include an end piece that collects noticeable Be-7 on its leading surface. No significant Be-7 was detected in the samples analyzed. The most sensitive analyses were performed with a 90 pct. efficient HPGe gamma ray detector, which is enclosed in a purged active/passive active shield.
Document ID
19910015674
Document Type
Conference Paper
Authors
Winn, Willard G.
(Westinghouse Savannah River Co. Aiken, SC, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA, Langley Research Center, First LDEF Post-Retrieval Symposium Abstracts
Subject Category
ATOMIC AND MOLECULAR PHYSICS
Funding Number(s)
CONTRACT_GRANT: DE-AC09-89SR-18035
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19910015658Analytic PrimaryFirst LDEF Post-Retrieval Symposium abstracts