Delayed-gamma signature calculation for neutron-induced fission and activation using MCNPX. Part II: Simulations

被引：10

作者：

Durkee, Joe W., Jr. ^{[1
]}

James, Michael R. ^{[1
]}

McKinney, Gregg W. ^{[1
]}

Trellue, Holly R. ^{[1
]}

Waters, Laurie S. ^{[1
]}

Wilson, William B. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PROGRESS IN NUCLEAR ENERGY | 2009年 / 51卷 / 08期

关键词：

MCNPX; CINDER'90; Fission product; Delayed-gamma lines; Activation; Beddingfield;

D O I：

10.1016/j.pnucene.2009.06.010

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In Part I, we presented the theory for the MCNPX Monte Carlo delayed-gamma emission feature. This feature permits the automated execution of radiation transport simulations of delayed-gamma emission spectra at discrete (line) energies created by the products of neutron fission and activation. To illustrate and help validate the new capability, calculated delayed-gamma emissions are presented in Part II for a model based on the Fisher and Engle (1964) experiment involving (235)U irradiation by a Watt-fission neutron pulse. The simulated results are in good agreement with low-resolution measured data. Simulation results involving the Beddingfield and Cecil (1998) (235)U and (239)Pu thermal-neutron irradiation are also presented. The structure of the high-resolution emission signature obtained using MCNPX is seen to be in good agreement with their experimental counterparts. We also show an activation result for (60)Ni bombardment by 15-MeV neutrons. The simulation results help to illustrate the use and validity of the new MCNPX delayed-gamma capability. Published by Elsevier Ltd.

引用

页码：828 / 836

页数：9

共 21 条

[1]

Beddingfield D.H, 2009, COMMUNICATION

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