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Title: Evaluation and Validation of 28,29,30SI Cross Sections in the Resolved Resonance Region

Abstract

Resonance parameter evaluations of the three stable silicon isotopes 28;29;30Si, were performed at Oak Ridge National Laboratory in 2002 and the results of those evaluations were restored from the archives in 2018. The evaluations also accounted for the contribution of the direct component of the capture cross sections computed over the neutron resonance range. For the most abundant isotope, 28Si, the value of the thermal capture cross sections was increased by 10% on the basis of analyses devoted to reevaluating the thermal radiative neutron capture cross sections. The contribution of the direct capture cross sections was recomputed for each isotope, and its energy-dependent behavior improved. Results of benchmark calculations performed at the International Atomic Energy Agency showed an excellent agreement with integral measurements.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Intl Atomic Energy Agency (IAEA), Vienna (Austria); Univ. de Sevilla (Spain)
  3. Intl Atomic Energy Agency (IAEA), Vienna (Austria)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1489565
Report Number(s):
ORNL/LTR-2018/1044
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS

Citation Formats

Pigni, Marco T., Guber, Klaus H., Arbanas, Goran, Wiarda, Dorothea, Capote, R., and Trkov, A. Evaluation and Validation of 28,29,30SI Cross Sections in the Resolved Resonance Region. United States: N. p., 2019. Web. doi:10.2172/1489565.
Pigni, Marco T., Guber, Klaus H., Arbanas, Goran, Wiarda, Dorothea, Capote, R., & Trkov, A. Evaluation and Validation of 28,29,30SI Cross Sections in the Resolved Resonance Region. United States. doi:10.2172/1489565.
Pigni, Marco T., Guber, Klaus H., Arbanas, Goran, Wiarda, Dorothea, Capote, R., and Trkov, A. Wed . "Evaluation and Validation of 28,29,30SI Cross Sections in the Resolved Resonance Region". United States. doi:10.2172/1489565. https://www.osti.gov/servlets/purl/1489565.
@article{osti_1489565,
title = {Evaluation and Validation of 28,29,30SI Cross Sections in the Resolved Resonance Region},
author = {Pigni, Marco T. and Guber, Klaus H. and Arbanas, Goran and Wiarda, Dorothea and Capote, R. and Trkov, A.},
abstractNote = {Resonance parameter evaluations of the three stable silicon isotopes 28;29;30Si, were performed at Oak Ridge National Laboratory in 2002 and the results of those evaluations were restored from the archives in 2018. The evaluations also accounted for the contribution of the direct component of the capture cross sections computed over the neutron resonance range. For the most abundant isotope, 28Si, the value of the thermal capture cross sections was increased by 10% on the basis of analyses devoted to reevaluating the thermal radiative neutron capture cross sections. The contribution of the direct capture cross sections was recomputed for each isotope, and its energy-dependent behavior improved. Results of benchmark calculations performed at the International Atomic Energy Agency showed an excellent agreement with integral measurements.},
doi = {10.2172/1489565},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Technical Report:

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