Validation of selected (n,2n) dosimetry reactions in IRDFF-1.05 library

Martin Schulc; Michal Košťál; Roberto Capote; Evžen Novák; Jan Šimon; Nicola Burianová; Anton Wallner

doi:10.1016/j.apradiso.2018.10.027

Validation of selected (n,2n) dosimetry reactions in IRDFF-1.05 library

Martin Schulc^*, Michal Košťál, Roberto Capote, Evžen Novák, Jan Šimon, Nicola Burianová, Anton Wallner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Spectrum-averaged cross sections (SACS) have been measured in the reference ²⁵²Cf(sf) neutron field for the following high-threshold (n,2n) neutron dosimetry reactions since they are especially important due to the high threshold which allows validation of upper parts of prompt fission neutron spectrum. This work includes 59Co(n,2n)58Co, 197Au(n,2n)196Au, ¹⁶⁹Tm(n,2n)¹⁶⁸Tm, ⁵⁵Mn(n,2n)⁵⁴Mn, ⁹³Nb(n,2n)^{92 m}Nb and ⁸⁹Y(n,2n)⁸⁸Y and for the ⁵⁹Co(n,p)⁵⁹Fe threshold reactions. SACS were inferred from experimentally determined reaction rates by gamma spectrometry using a semiconductor high-purity germanium detector to measure irradiated samples. Measured reaction rates agree within quoted uncertainties with those calculated from the IRDFF-1.05 library, except for the reaction ⁵⁵Mn(n,2n)⁵⁴Mn, for which the measured value is underestimated by 16%. For this reaction the ENDF-B/VII.1 evaluation agrees with measured reaction rate within uncertainties.

Original language	English
Pages (from-to)	132-140
Number of pages	9
Journal	Applied Radiation and Isotopes
Volume	143
DOIs	https://doi.org/10.1016/j.apradiso.2018.10.027
Publication status	Published - Jan 2019

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@article{79edbf00058342dab325b100b9ad6b40,

title = "Validation of selected (n,2n) dosimetry reactions in IRDFF-1.05 library",

abstract = "Spectrum-averaged cross sections (SACS) have been measured in the reference 252Cf(sf) neutron field for the following high-threshold (n,2n) neutron dosimetry reactions since they are especially important due to the high threshold which allows validation of upper parts of prompt fission neutron spectrum. This work includes 59Co(n,2n)58Co, 197Au(n,2n)196Au, 169Tm(n,2n)168Tm, 55Mn(n,2n)54Mn, 93Nb(n,2n)92 mNb and 89Y(n,2n)88Y and for the 59Co(n,p)59Fe threshold reactions. SACS were inferred from experimentally determined reaction rates by gamma spectrometry using a semiconductor high-purity germanium detector to measure irradiated samples. Measured reaction rates agree within quoted uncertainties with those calculated from the IRDFF-1.05 library, except for the reaction 55Mn(n,2n)54Mn, for which the measured value is underestimated by 16%. For this reaction the ENDF-B/VII.1 evaluation agrees with measured reaction rate within uncertainties.",

keywords = "Cf, Cross section measurement, Nuclear data, Spectral averaged cross sections",

author = "Martin Schulc and Michal Ko{\v s}{\v t}{\'a}l and Roberto Capote and Ev{\v z}en Nov{\'a}k and Jan {\v S}imon and Nicola Burianov{\'a} and Anton Wallner",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = jan,

doi = "10.1016/j.apradiso.2018.10.027",

language = "English",

volume = "143",

pages = "132--140",

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T1 - Validation of selected (n,2n) dosimetry reactions in IRDFF-1.05 library

AU - Schulc, Martin

AU - Košťál, Michal

AU - Capote, Roberto

AU - Novák, Evžen

AU - Šimon, Jan

AU - Burianová, Nicola

AU - Wallner, Anton

PY - 2019/1

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N2 - Spectrum-averaged cross sections (SACS) have been measured in the reference 252Cf(sf) neutron field for the following high-threshold (n,2n) neutron dosimetry reactions since they are especially important due to the high threshold which allows validation of upper parts of prompt fission neutron spectrum. This work includes 59Co(n,2n)58Co, 197Au(n,2n)196Au, 169Tm(n,2n)168Tm, 55Mn(n,2n)54Mn, 93Nb(n,2n)92 mNb and 89Y(n,2n)88Y and for the 59Co(n,p)59Fe threshold reactions. SACS were inferred from experimentally determined reaction rates by gamma spectrometry using a semiconductor high-purity germanium detector to measure irradiated samples. Measured reaction rates agree within quoted uncertainties with those calculated from the IRDFF-1.05 library, except for the reaction 55Mn(n,2n)54Mn, for which the measured value is underestimated by 16%. For this reaction the ENDF-B/VII.1 evaluation agrees with measured reaction rate within uncertainties.

AB - Spectrum-averaged cross sections (SACS) have been measured in the reference 252Cf(sf) neutron field for the following high-threshold (n,2n) neutron dosimetry reactions since they are especially important due to the high threshold which allows validation of upper parts of prompt fission neutron spectrum. This work includes 59Co(n,2n)58Co, 197Au(n,2n)196Au, 169Tm(n,2n)168Tm, 55Mn(n,2n)54Mn, 93Nb(n,2n)92 mNb and 89Y(n,2n)88Y and for the 59Co(n,p)59Fe threshold reactions. SACS were inferred from experimentally determined reaction rates by gamma spectrometry using a semiconductor high-purity germanium detector to measure irradiated samples. Measured reaction rates agree within quoted uncertainties with those calculated from the IRDFF-1.05 library, except for the reaction 55Mn(n,2n)54Mn, for which the measured value is underestimated by 16%. For this reaction the ENDF-B/VII.1 evaluation agrees with measured reaction rate within uncertainties.

KW - Cf

KW - Cross section measurement

KW - Nuclear data

KW - Spectral averaged cross sections

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U2 - 10.1016/j.apradiso.2018.10.027

DO - 10.1016/j.apradiso.2018.10.027

M3 - Article

SN - 0969-8043

VL - 143

SP - 132

EP - 140

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

ER -

Validation of selected (n,2n) dosimetry reactions in IRDFF-1.05 library

Abstract

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