ANSTO Publications Online >
ANSTO Publications >
Scientific and Technical Reports >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/838

Title: Radiation shielding of an 8 in x 6 in Nal(TI) crystal for use in keV neutron capture experiments.
Authors: Broomhall, GJ
Issue Date: Nov-1971
Publisher: Australian Nuclear Science and Technology Organisation
Abstract: The sensitivity of large NaI(TI) detectors to background radiation inhibits their use in measuring partial neutron capture cross sections in the keV energy region. Major sources of neutron induced background are the iodine in the crystal and iron in structural materials. In a survey of possible neutron shielding materials, a 70 percent by weight mixture of boron carbide in paraffin most readily reduced keV neutron fluxes. The use of a multi-layered shield assembly, incorporating an inner sleeve of boron carbide and lead shot in a litharge/glycerine cement, gave a factor of 10 improvement in the counts-to-background ratio at the 37 keV resonance in 48Ti.
URI: http://apo.ansto.gov.au/dspace/handle/10238/838
ISBN: 0642994420
Appears in Collections:Scientific and Technical Reports

Files in This Item:

File Description SizeFormat
AAEC-TM-603.pdf402.92 kBAdobe PDFView/Open

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback