Actual and potential measurements of fission-rate ratios in the NIST iron sphere

R. L. Perel; J. J. Wagschal; Y. Yeivin

doi:10.1520/stp13615s

Actual and potential measurements of fission-rate ratios in the NIST iron sphere

R. L. Perel^*
, J. J. Wagschal
, Y. Yeivin

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We analyze various calculated fission-rate ratios in the leakage spectrum of the NIST iron sphere benchmark field employing a few modern cross-section libraries and compare the only measured value of the ²³⁷Np/²³⁸U ratio to the respective calculated values. We also present the sensitivities of the calculated fission rates and fission-rate ratios to the ⁵⁶Fe elastic- and first-level-inelastic-scattering cross sections. We conclude with a recommendation of additional measurements that can shed more light on the various iron, in particular ⁵⁶Fe, cross-section evaluations.

Original language	English
Pages (from-to)	344-351
Number of pages	8
Journal	ASTM Special Technical Publication
Issue number	1398
DOIs	https://doi.org/10.1520/stp13615s
State	Published - 2001
Event	Reactor Dosimetry: Radiation Metrology and Assesment - Osaka, Japan Duration: 12 Sep 1999 → 17 Sep 1999

Keywords

Cross-section libraries
Iron sphere
NIST
Reaction rates
Sensitivities

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title = "Actual and potential measurements of fission-rate ratios in the NIST iron sphere",

abstract = "We analyze various calculated fission-rate ratios in the leakage spectrum of the NIST iron sphere benchmark field employing a few modern cross-section libraries and compare the only measured value of the 237Np/238U ratio to the respective calculated values. We also present the sensitivities of the calculated fission rates and fission-rate ratios to the 56Fe elastic- and first-level-inelastic-scattering cross sections. We conclude with a recommendation of additional measurements that can shed more light on the various iron, in particular 56Fe, cross-section evaluations.",

keywords = "Cross-section libraries, Iron sphere, NIST, Reaction rates, Sensitivities",

author = "Perel, \{R. L.\} and Wagschal, \{J. J.\} and Y. Yeivin",

year = "2001",

doi = "10.1520/stp13615s",

language = "אנגלית",

pages = "344--351",

journal = "ASTM Special Technical Publication",

issn = "0066-0558",

publisher = "ASTM International",

number = "1398",

note = "Reactor Dosimetry: Radiation Metrology and Assesment ; Conference date: 12-09-1999 Through 17-09-1999",

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T1 - Actual and potential measurements of fission-rate ratios in the NIST iron sphere

AU - Perel, R. L.

AU - Wagschal, J. J.

AU - Yeivin, Y.

PY - 2001

Y1 - 2001

N2 - We analyze various calculated fission-rate ratios in the leakage spectrum of the NIST iron sphere benchmark field employing a few modern cross-section libraries and compare the only measured value of the 237Np/238U ratio to the respective calculated values. We also present the sensitivities of the calculated fission rates and fission-rate ratios to the 56Fe elastic- and first-level-inelastic-scattering cross sections. We conclude with a recommendation of additional measurements that can shed more light on the various iron, in particular 56Fe, cross-section evaluations.

AB - We analyze various calculated fission-rate ratios in the leakage spectrum of the NIST iron sphere benchmark field employing a few modern cross-section libraries and compare the only measured value of the 237Np/238U ratio to the respective calculated values. We also present the sensitivities of the calculated fission rates and fission-rate ratios to the 56Fe elastic- and first-level-inelastic-scattering cross sections. We conclude with a recommendation of additional measurements that can shed more light on the various iron, in particular 56Fe, cross-section evaluations.

KW - Cross-section libraries

KW - Iron sphere

KW - NIST

KW - Reaction rates

KW - Sensitivities

UR - https://www.scopus.com/pages/publications/0035554770

U2 - 10.1520/stp13615s

DO - 10.1520/stp13615s

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AN - SCOPUS:0035554770

SN - 0066-0558

SP - 344

EP - 351

JO - ASTM Special Technical Publication

JF - ASTM Special Technical Publication

IS - 1398

T2 - Reactor Dosimetry: Radiation Metrology and Assesment

Y2 - 12 September 1999 through 17 September 1999

ER -

Actual and potential measurements of fission-rate ratios in the NIST iron sphere

Abstract

Keywords

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