Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact

C. Domingo-Pardo; U. Abbondanno; G. Aerts; H. Alvarez; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; P. Assimakopoulos; L. Audouin; G. Badurek; P. Baumann; F. Becvar; E. Berthoumieux; F. Calvino; M. Calviani; D. Cano-Ott; R. Capote; C. Carrapico; P. Cennini; V. Chepel; E. Chiaveri; N. Colonna; G. Cortes; A. Couture; J. Cox; M. Dahlfors; S. David; I. Dillmann; W. Dridi; I. Duran; C. Eleftheriadis; M. Embid-Segura; L. Ferrant; A. Ferrari; R. Ferreira-Marques; K. Fujii; W. Furman; I. Goncalves; E. Gonzalez-Romero; F. Gramegna; C. Guerrero; F. Gunsing; B. Haas; R. Haight; M. Heil; A. Herrera-Martinez; M. Igashira; E. Jericha; F. Kaeppeler; T. Rauscher; n TOF Collaboration

doi:10.1051/ndata:07493

Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact

C. Domingo-Pardo, U. Abbondanno, G. Aerts, H. Alvarez, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvar, E. Berthoumieux, F. Calvino, M. Calviani, D. Cano-Ott, R. Capote, C. Carrapico, P. Cennini, V. ChepelE. Chiaveri, N. Colonna, G. Cortes, A. Couture, J. Cox, M. Dahlfors, S. David, I. Dillmann, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, K. Fujii, W. Furman, I. Goncalves, E. Gonzalez-Romero, F. Gramegna, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, E. Jericha, F. Kaeppeler, T. Rauscher, n TOF Collaboration

Centre for Astrophysics Research

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved gamma-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt gamma-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,gamma) cross sections of (204,206,207)Pb and (209)Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.

Original language	English
Title of host publication	Procs Int Conf on Nuclear Data for Science and Technology
Subtitle of host publication	ND2007
Editors	O. Bersillon, F. Gunsing, E. Bauge, R. Jacqmin, S. Leray
Publisher	EDP Sciences
Pages	1311-1314
Number of pages	4
Volume	2
ISBN (Print)	978-2-7598-0091-9
DOIs	https://doi.org/10.1051/ndata:07493
Publication status	Published - 2008
Event	International Conference on Nuclear Data for Science and Technology - Nice, France Duration: 22 Apr 2007 → 27 Apr 2007

Conference

Conference	International Conference on Nuclear Data for Science and Technology
Country/Territory	France
City	Nice
Period	22/04/07 → 27/04/07

Keywords

CHRONOMETERS
DETECTOR
GIANT BRANCH STARS
RESONANCE NEUTRON-CAPTURE
NUCLEOSYNTHESIS
TRANSMISSION
CERN
GALACTIC CHEMICAL EVOLUTION

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10.1051/ndata:07493

Ndata07493
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Domingo-Pardo, C., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Berthoumieux, E., Calvino, F., Calviani, M., Cano-Ott, D., Capote, R., Carrapico, C., Cennini, P., ... n TOF Collaboration (2008). Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact. In O. Bersillon, F. Gunsing, E. Bauge, R. Jacqmin, & S. Leray (Eds.), Procs Int Conf on Nuclear Data for Science and Technology: ND2007 (Vol. 2, pp. 1311-1314). [347] EDP Sciences. https://doi.org/10.1051/ndata:07493

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abstract = "A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved gamma-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt gamma-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,gamma) cross sections of (204,206,207)Pb and (209)Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.",

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Domingo-Pardo, C, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Berthoumieux, E, Calvino, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapico, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Goncalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Kaeppeler, F, Rauscher, T & n TOF Collaboration 2008, Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact. in O Bersillon, F Gunsing, E Bauge, R Jacqmin & S Leray (eds), Procs Int Conf on Nuclear Data for Science and Technology: ND2007. vol. 2, 347, EDP Sciences, pp. 1311-1314, International Conference on Nuclear Data for Science and Technology, Nice, France, 22/04/07. https://doi.org/10.1051/ndata:07493

Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact. / Domingo-Pardo, C.; Abbondanno, U.; Aerts, G. et al.

Procs Int Conf on Nuclear Data for Science and Technology: ND2007. ed. / O. Bersillon; F. Gunsing; E. Bauge; R. Jacqmin; S. Leray. Vol. 2 EDP Sciences, 2008. p. 1311-1314 347.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact

AU - Domingo-Pardo, C.

AU - Abbondanno, U.

AU - Aerts, G.

AU - Alvarez, H.

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 - Berthoumieux, E.

AU - Calvino, F.

AU - Calviani, M.

AU - Cano-Ott, D.

AU - Capote, R.

AU - Carrapico, C.

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 - Dridi, W.

AU - Duran, I.

AU - Eleftheriadis, C.

AU - Embid-Segura, M.

AU - Ferrant, L.

AU - Ferrari, A.

AU - Ferreira-Marques, R.

AU - Fujii, K.

AU - Furman, W.

AU - Goncalves, I.

AU - Gonzalez-Romero, E.

AU - Gramegna, F.

AU - Guerrero, C.

AU - Gunsing, F.

AU - Haas, B.

AU - Haight, R.

AU - Heil, M.

AU - Herrera-Martinez, A.

AU - Igashira, M.

AU - Jericha, E.

AU - Kaeppeler, F.

AU - Rauscher, T.

AU - n TOF Collaboration

N1 - Open Access

PY - 2008

Y1 - 2008

N2 - A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved gamma-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt gamma-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,gamma) cross sections of (204,206,207)Pb and (209)Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.

AB - A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to scattered neutrons were reduced down to a negligible level by using improved gamma-ray detectors with very low neutron sensitivity. The background level has been determined precisely from a complementary measurement. Other experimental effects related to the electronic threshold in the detectors and the angular distribution of the prompt gamma-rays were investigated via Monte Carlo simulations and could be taken in account in the analysis of the capture data. With this set of measurements the energy differential (n,gamma) cross sections of (204,206,207)Pb and (209)Bi have been determined with good accuracy. The information obtained in this work becomes of interest for constraining r-process calculations and in particular for the Th/U cosmochronometer.

KW - CHRONOMETERS

KW - DETECTOR

KW - GIANT BRANCH STARS

KW - RESONANCE NEUTRON-CAPTURE

KW - NUCLEOSYNTHESIS

KW - TRANSMISSION

KW - CERN

KW - GALACTIC CHEMICAL EVOLUTION

U2 - 10.1051/ndata:07493

DO - 10.1051/ndata:07493

M3 - Conference contribution

SN - 978-2-7598-0091-9

VL - 2

SP - 1311

EP - 1314

BT - Procs Int Conf on Nuclear Data for Science and Technology

A2 - Bersillon, O.

A2 - Gunsing, F.

A2 - Bauge, E.

A2 - Jacqmin, R.

A2 - Leray, S.

PB - EDP Sciences

T2 - International Conference on Nuclear Data for Science and Technology

Y2 - 22 April 2007 through 27 April 2007

ER -

Domingo-Pardo C, Abbondanno U, Aerts G, Alvarez H, Alvarez-Velarde F, Andriamonje S et al. Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact. In Bersillon O, Gunsing F, Bauge E, Jacqmin R, Leray S, editors, Procs Int Conf on Nuclear Data for Science and Technology: ND2007. Vol. 2. EDP Sciences. 2008. p. 1311-1314. 347 doi: 10.1051/ndata:07493

Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact

Abstract

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Keywords

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