Measurement of the 236U(n,f) Cross Section in the Neutron Energy Range from 0.5 eV up to 25 keV

Cyriel Wagemans; Liesbeth De Smet; Sofie Vermote; Jan Heyse; Jaak Van Gils; Olivier Serot; Jan Wagemans

Measurement of the 236U(n,f) Cross Section in the Neutron Energy Range from 0.5 eV up to 25 keV

Cyriel Wagemans, Liesbeth De Smet, Sofie Vermote, Jan Heyse, Jaak Van Gils, Olivier Serot, Jan Wagemans

Research output › peer-review

Abstract

The 236U(n,f) cross section has been measured in the energy range from 0.5 eV to 25 keV at the Geel Electron Linear Accelerator neutron time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. A highly enriched 236U sample was mounted back-to-back with a 10B sample in the center of a Frisch-gridded ionization chamber, hence realizing a 2pi detection geometry. A 235U(n,f) cross-section control measurement was performed in the same experimental conditions. Special attention has been given to the fission resonance integral I_f and to the strongest resonance at 5.45 eV, for which a resonance analysis has been performed yielding Gamma_f = 1.7 µeV. Both values are highly overestimated in the literature.

Original language	English
Pages (from-to)	200-206
Journal	Nuclear Science and Engineering
Volume	160
Issue number	2
State	Published - 1 Oct 2008

Cite this

@article{198c4dfa474441778ae83e33bb205f15,

title = "Measurement of the 236U(n,f) Cross Section in the Neutron Energy Range from 0.5 eV up to 25 keV",

abstract = "The 236U(n,f) cross section has been measured in the energy range from 0.5 eV to 25 keV at the Geel Electron Linear Accelerator neutron time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. A highly enriched 236U sample was mounted back-to-back with a 10B sample in the center of a Frisch-gridded ionization chamber, hence realizing a 2pi detection geometry. A 235U(n,f) cross-section control measurement was performed in the same experimental conditions. Special attention has been given to the fission resonance integral I_f and to the strongest resonance at 5.45 eV, for which a resonance analysis has been performed yielding Gamma_f = 1.7 µeV. Both values are highly overestimated in the literature.",

keywords = "nuclear reactions, neutron, cross section, measurement, fission, (n, f), 236U, time-of-flight, resonance, IRMM, GELINA, 235U, 10B, En=0.5eV-25keV",

author = "Cyriel Wagemans and {De Smet}, Liesbeth and Sofie Vermote and Jan Heyse and {Van Gils}, Jaak and Olivier Serot and Jan Wagemans",

note = "Score = 10",

year = "2008",

month = oct,

day = "1",

language = "English",

volume = "160",

pages = "200--206",

journal = "Nuclear Science and Engineering",

issn = "0029-5639",

publisher = "Taylor & Francis (CRC)",

number = "2",

}

TY - JOUR

T1 - Measurement of the 236U(n,f) Cross Section in the Neutron Energy Range from 0.5 eV up to 25 keV

AU - Wagemans, Cyriel

AU - De Smet, Liesbeth

AU - Vermote, Sofie

AU - Heyse, Jan

AU - Van Gils, Jaak

AU - Serot, Olivier

A2 - Wagemans, Jan

N1 - Score = 10

PY - 2008/10/1

Y1 - 2008/10/1

N2 - The 236U(n,f) cross section has been measured in the energy range from 0.5 eV to 25 keV at the Geel Electron Linear Accelerator neutron time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. A highly enriched 236U sample was mounted back-to-back with a 10B sample in the center of a Frisch-gridded ionization chamber, hence realizing a 2pi detection geometry. A 235U(n,f) cross-section control measurement was performed in the same experimental conditions. Special attention has been given to the fission resonance integral I_f and to the strongest resonance at 5.45 eV, for which a resonance analysis has been performed yielding Gamma_f = 1.7 µeV. Both values are highly overestimated in the literature.

AB - The 236U(n,f) cross section has been measured in the energy range from 0.5 eV to 25 keV at the Geel Electron Linear Accelerator neutron time-of-flight facility of the Institute for Reference Materials and Measurements in Geel, Belgium. A highly enriched 236U sample was mounted back-to-back with a 10B sample in the center of a Frisch-gridded ionization chamber, hence realizing a 2pi detection geometry. A 235U(n,f) cross-section control measurement was performed in the same experimental conditions. Special attention has been given to the fission resonance integral I_f and to the strongest resonance at 5.45 eV, for which a resonance analysis has been performed yielding Gamma_f = 1.7 µeV. Both values are highly overestimated in the literature.

KW - nuclear reactions

KW - neutron

KW - cross section

KW - measurement

KW - fission

KW - (n

KW - f)

KW - 236U

KW - time-of-flight

KW - resonance

KW - IRMM

KW - GELINA

KW - 235U

KW - 10B

KW - En=0.5eV-25keV

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_92931

UR - http://knowledgecentre.sckcen.be/so2/bibref/5359

M3 - Article

SN - 0029-5639

VL - 160

SP - 200

EP - 206

JO - Nuclear Science and Engineering

JF - Nuclear Science and Engineering

IS - 2

ER -