Document Details


Title:
GAMMA-RAY SPECTRA OF THE PRODUCTS OF FAST NEUTRON FISSION OF URANIUM 235 AND URANIUM 238 AT SELECTED TIMES AFTER FISSION
Author(s):
BUNNEY, L R [UNITED STATES NAVAL RADIOLOGICAL DEFENSE LABORATORY]; SAM, D [UNITED STATES NAVAL RADIOLOGICAL DEFENSE LABORATORY]
Subject Terms:
GAMMA DETECTION; URANIUM 238; NEUTRONS; URANIUM 235; FISSION PRODUCTS; FALLOUT; SPECTRA; CALCULATIONS; PROCEDURES; BETA DETECTION; GRAPHS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1966 Sep 13
Declassification Status:
Unknown
Document Pages:
0046
Accession Number:
NV0060802
Document Number(s):
USNRDLTR1076
Originating Research Org.:
UNITED STATES NAVAL RADIOLOGICAL DEFENSE LABORATOR
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
EXPERIMENTAL MEASUREMENTS OF THE GAMMA-RAY PULSE HEIGHT DISTRIBUTIONS DUE TO THE PRODUCTS OF FAST-NEUTRON-INDUCED FISSION OF URANIUM 235 AND URANIUM 238 ARE PRESENTED. THE MEASUREMENTS WERE MADE AT NINE SELECT ED TIMES AFTER FISSION FROM 15 MINUTES TO 3 DAYS. IRRADIATION TIMES A ND COUNTING INTERVALS WERE CHOSEN TO MINIMIZE SATURATION AND DECAY EFF ECTS. THE EXPERIMENTAL DATA WERE USED TO CALCULATE 100 ENERGY BIN DIS TRIBUTIONS OF THE ABSOLUTE NUMBER OF PHOTONS/FISSION-SEC. BY MEANS OF ABSOLUTE CLIBRATIONS OF THE COLLIMATED NAI(T1) DETECTOR. THE NUMBER O F FISSIONS IN EACH SAMPLE WAS DETERMINED RADIOCHEMICALLY. MACHINE COM PUTATION WAS USED EXTENSIVELY.


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