Measurement and resonance analysis of the Np-237 neutron capture cross section

C. Guerrero; D. Cano-Ott; E. Mendoza; U. Abbondanno; G. Aerts; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; P. Assimakopoulos; L. Audouin; G. Badurek; P. Baumann; F. Becvar; F. Belloni; E. Berthoumieux; F. Calvino; M. Calviani; R. Capote; C. Carrapico; A. Carrillo de Albornoz; P. Cennini; V. Chepel; E. Chiaveri; N. Colonna; G. Cortes; A. Couture; J. Cox; M. Dahlfors; S. David; I. Dillmann; R. Dolfini; C. Domingo-Pardo; W. Dridi; I. Duran; C. Eleftheriadis; M. Embid-Segura; L. Ferrant; A. Ferrari; R. Ferreira-Marques; L. Fitzpatrick; H. Frais-Koelbl; K. Fujii; W. Furman; I. Goncalves; E. Gonzalez-Romero; A. Goverdovski; F. Gramegna; E. Griesmayer; F. Gunsing; T. Rauscher; N TOF Collaboration

doi:10.1103/PhysRevC.85.044616

Measurement and resonance analysis of the Np-237 neutron capture cross section

C. Guerrero, D. Cano-Ott, E. Mendoza, U. Abbondanno, G. Aerts, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvar, F. Belloni, E. Berthoumieux, F. Calvino, M. Calviani, R. Capote, C. Carrapico, A. Carrillo de AlbornozP. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, R. Dolfini, C. Domingo-Pardo, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, I. Goncalves, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, F. Gunsing, T. Rauscher, N TOF Collaboration

Centre for Astrophysics Research (CAR)

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Abstract

The neutron capture cross section of Np-237 was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 pi BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the SAMMY code. The result is a complete set of individual as well as average resonance parameters [D-0 = 0.56(2) eV, = 40.9(18) meV, 10(4)S(0) = 0.98(6), R' = 9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.

Original language	English
Article number	044616
Number of pages	15
Journal	Physical Review C (nuclear physics)
Volume	85
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.85.044616
Publication status	Published - 20 Apr 2012

Keywords

RANGE
DETECTOR
PARAMETERS
OF-FLIGHT FACILITY
N-TOF
SIMULATION
TOTAL ABSORPTION CALORIMETER
CERN

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10.1103/PhysRevC.85.044616

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Guerrero, C., Cano-Ott, D., Mendoza, E., Abbondanno, U., Aerts, G., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Belloni, F., Berthoumieux, E., Calvino, F., Calviani, M., Capote, R., Carrapico, C., ... N TOF Collaboration (2012). Measurement and resonance analysis of the Np-237 neutron capture cross section. Physical Review C (nuclear physics), 85(4), Article 044616. https://doi.org/10.1103/PhysRevC.85.044616

@article{70f679b1378441f081cda91fce4a1ce6,

title = "Measurement and resonance analysis of the Np-237 neutron capture cross section",

abstract = "The neutron capture cross section of Np-237 was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 pi BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the SAMMY code. The result is a complete set of individual as well as average resonance parameters [D-0 = 0.56(2) eV, = 40.9(18) meV, 10(4)S(0) = 0.98(6), R' = 9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.",

keywords = "RANGE, DETECTOR, PARAMETERS, OF-FLIGHT FACILITY, N-TOF, SIMULATION, TOTAL ABSORPTION CALORIMETER, CERN",

author = "C. Guerrero and D. Cano-Ott and E. Mendoza and U. Abbondanno and G. Aerts and F. Alvarez-Velarde and S. Andriamonje and J. Andrzejewski and P. Assimakopoulos and L. Audouin and G. Badurek and P. Baumann and F. Becvar and F. Belloni and E. Berthoumieux and F. Calvino and M. Calviani and R. Capote and C. Carrapico and {Carrillo de Albornoz}, A. and P. Cennini and V. Chepel and E. Chiaveri and N. Colonna and G. Cortes and A. Couture and J. Cox and M. Dahlfors and S. David and I. Dillmann and R. Dolfini and C. Domingo-Pardo and W. Dridi and I. Duran and C. Eleftheriadis and M. Embid-Segura and L. Ferrant and A. Ferrari and R. Ferreira-Marques and L. Fitzpatrick and H. Frais-Koelbl and K. Fujii and W. Furman and I. Goncalves and E. Gonzalez-Romero and A. Goverdovski and F. Gramegna and E. Griesmayer and F. Gunsing and T. Rauscher and {N TOF Collaboration}",

year = "2012",

month = apr,

day = "20",

doi = "10.1103/PhysRevC.85.044616",

language = "English",

volume = "85",

journal = "Physical Review C (nuclear physics)",

issn = "2469-9985",

publisher = "American Physical Society (APS)",

number = "4",

}

Guerrero, C, Cano-Ott, D, Mendoza, E, Abbondanno, U, Aerts, G, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Calvino, F, Calviani, M, Capote, R, Carrapico, C, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dolfini, R, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Fujii, K, Furman, W, Goncalves, I, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Gunsing, F, Rauscher, T & N TOF Collaboration 2012, 'Measurement and resonance analysis of the Np-237 neutron capture cross section', Physical Review C (nuclear physics), vol. 85, no. 4, 044616. https://doi.org/10.1103/PhysRevC.85.044616

TY - JOUR

T1 - Measurement and resonance analysis of the Np-237 neutron capture cross section

AU - Guerrero, C.

AU - Cano-Ott, D.

AU - Mendoza, E.

AU - Abbondanno, U.

AU - Aerts, G.

AU - Alvarez-Velarde, F.

AU - Andriamonje, S.

AU - Andrzejewski, J.

AU - Assimakopoulos, P.

AU - Audouin, L.

AU - Badurek, G.

AU - Baumann, P.

AU - Becvar, F.

AU - Belloni, F.

AU - Berthoumieux, E.

AU - Calvino, F.

AU - Calviani, M.

AU - Capote, R.

AU - Carrapico, C.

AU - Carrillo de Albornoz, A.

AU - Cennini, P.

AU - Chepel, V.

AU - Chiaveri, E.

AU - Colonna, N.

AU - Cortes, G.

AU - Couture, A.

AU - Cox, J.

AU - Dahlfors, M.

AU - David, S.

AU - Dillmann, I.

AU - Dolfini, R.

AU - Domingo-Pardo, C.

AU - Dridi, W.

AU - Duran, I.

AU - Eleftheriadis, C.

AU - Embid-Segura, M.

AU - Ferrant, L.

AU - Ferrari, A.

AU - Ferreira-Marques, R.

AU - Fitzpatrick, L.

AU - Frais-Koelbl, H.

AU - Fujii, K.

AU - Furman, W.

AU - Goncalves, I.

AU - Gonzalez-Romero, E.

AU - Goverdovski, A.

AU - Gramegna, F.

AU - Griesmayer, E.

AU - Gunsing, F.

AU - Rauscher, T.

AU - N TOF Collaboration

PY - 2012/4/20

Y1 - 2012/4/20

N2 - The neutron capture cross section of Np-237 was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 pi BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the SAMMY code. The result is a complete set of individual as well as average resonance parameters [D-0 = 0.56(2) eV, = 40.9(18) meV, 10(4)S(0) = 0.98(6), R' = 9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.

AB - The neutron capture cross section of Np-237 was measured between 0.7 and 500 eV at the CERN n_TOF facility using the 4 pi BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the SAMMY code. The result is a complete set of individual as well as average resonance parameters [D-0 = 0.56(2) eV, = 40.9(18) meV, 10(4)S(0) = 0.98(6), R' = 9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd [Nucl. Sci. Eng. 79, 184 (1981)], thus showing sizable differences with respect to previous data from Scherbakov et al. [J. Nucl. Sci. Technol. 42, 135 (2005)] and large discrepancies with data Kobayashi et al. [J. Nucl. Sci. Technol. 39, 111 (2002)]. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices.

KW - RANGE

KW - DETECTOR

KW - PARAMETERS

KW - OF-FLIGHT FACILITY

KW - N-TOF

KW - SIMULATION

KW - TOTAL ABSORPTION CALORIMETER

KW - CERN

U2 - 10.1103/PhysRevC.85.044616

DO - 10.1103/PhysRevC.85.044616

M3 - Article

SN - 2469-9985

VL - 85

JO - Physical Review C (nuclear physics)

JF - Physical Review C (nuclear physics)

IS - 4

M1 - 044616

ER -

Measurement and resonance analysis of the Np-237 neutron capture cross section

Abstract

Keywords

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