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Delayed neutron yields for 39 fissile systems

Conference:

Abstract

Accurate knowledge of absolute delayed neutron yields ({nu}d) needs to be improved. A method to derive the anti{nu}d is to do a summation calculation using cumulative fission yields (CU) and delayed neutron branching (Pn) for all precursors. For the `CU` we have taken the data from the JEF-2 file for 3 fissile systems. We have also done the calculations with the `CU` distributed by Wahl for U233T, U235T and F, U238F, PU239T, PU241T. In JEF-2 we have `Pn` data for 156 precursors, almost 100 coming from experimental results and the others from a calculation by Klapdor. The results are compared with the last evaluations for the systems already measured. The relative uncertainty is three times higher for the `CU` than for the Pn.
Authors:
Publication Date:
Dec 31, 1991
Product Type:
Conference
Report Number:
CEA-CONF-10844; CONF-910503-
Reference Number:
SCA: 663610; PA: AIX-24:009113; SN: 93000933520
Resource Relation:
Conference: International conference on nuclear data for science and technology,Juelich (Germany),13-17 May 1991; Other Information: PBD: 1991
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DELAYED NEUTRON FRACTION; NUCLEAR DATA COLLECTIONS; FISSILE MATERIALS; DELAYED NEUTRON PRECURSORS; 663610; NEUTRON PHYSICS
OSTI ID:
10119767
Research Organizations:
CEA Centre d`Etudes de Grenoble, 38 (France). Direction des Sciences de la Matiere
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE93613519; TRN: FR9300627009113
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
FRN
Size:
[4] p.
Announcement Date:
Jun 30, 2005

Conference:

Citation Formats

Blachot, J. Delayed neutron yields for 39 fissile systems. France: N. p., 1991. Web.
Blachot, J. Delayed neutron yields for 39 fissile systems. France.
Blachot, J. 1991. "Delayed neutron yields for 39 fissile systems." France.
@misc{etde_10119767,
title = {Delayed neutron yields for 39 fissile systems}
author = {Blachot, J}
abstractNote = {Accurate knowledge of absolute delayed neutron yields ({nu}d) needs to be improved. A method to derive the anti{nu}d is to do a summation calculation using cumulative fission yields (CU) and delayed neutron branching (Pn) for all precursors. For the `CU` we have taken the data from the JEF-2 file for 3 fissile systems. We have also done the calculations with the `CU` distributed by Wahl for U233T, U235T and F, U238F, PU239T, PU241T. In JEF-2 we have `Pn` data for 156 precursors, almost 100 coming from experimental results and the others from a calculation by Klapdor. The results are compared with the last evaluations for the systems already measured. The relative uncertainty is three times higher for the `CU` than for the Pn.}
place = {France}
year = {1991}
month = {Dec}
}