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Neutron Spectrum Measurements in a Homogeneous Erbium System and Erbium Cross Sections

T. Gozani, G. D. Trimble

Nuclear Science and Engineering / Volume 41 / Number 2 / Pages 164-176

August 1970

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Careful measurements and calculations of the neutron spectrum in an aqueous solution of erbium nitrate are described. The validity of the infinite medium calculation is scrutinizingly studied. As a result it is shown that the discrepancy between measurement and calculation is caused by a too high (by about 10%) absorption cross section of erbium. This result is substantiated by two independent integral tests; the fundamental time eigenvalue of the system and the neutron conservation test.

 
 
 
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