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ASTR FAST-NEUTRON AND GAMMA-RAY SPECTRAL MEASUREMENTS

Technical Report ·
OSTI ID:4069474
Gamma and fast-neutron radiation spectra from the Airborne Shield Test Reactor (ASTR) are determined. Gammaray spectral measurements are presented for the following experimental arrangements: (1) In a horizontal plane through the centerline of the ASTR, at tt = 0 deg through 180 deg . at a 63-ft separation distance, for ASTR configuration 3 with the boral cover on the ASTR and the ASTR shield water- borated, and using a collimated detector; and (2) in the small cylinder (geometry D), at theta = 0 deg at a 33-ft separation distance, for ASTR configuration 3 with the boral cover off the ASTR and the ASTR shield water not borated, and using a bare-crystal uncollimated detector. Fastneutron spectral measurements were made in a horizontal plane through the centerline of the ASTR at a 33-ft separation distance, and are presented for: (1) theta = 0, 105, and 120 deg for ASTR configuration 3; (2) theta = 105 deg for ASTR configuration 5; and (3) theta = 90 deg for ASTR configuration 15. (auth)
Research Organization:
Convair, Fort Worth, Tex.
NSA Number:
NSA-15-013869
OSTI ID:
4069474
Report Number(s):
NARF-60-21T; MR-N-263
Country of Publication:
United States
Language:
English

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