Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis

C. Lederer; C. Massimi; S. Altstadt; J. Andrzejewski; L. Audouin; M. Barbagallo; V. Becares; F. Becvar; F. Belloni; E. Berthoumieux; J. Billowes; V. Boccone; D. Bosnar; M. Brugger; M. Calviani; F. Calvino; D. Cano-Ott; C. Carrapico; F. Cerutti; E. Chiaveri; M. Chin; N. Colonna; G. Cortes; M. A. Cortes-Giraldo; M. Diakaki; C. Domingo-Pardo; I. Duran; R. Dressler; N. Dzysiuk; C. Eleftheriadis; A. Ferrari; K. Fraval; S. Ganesan; A. R. Garcia; G. Giubrone; M. B. Gomez-Hornillos; I. F. Goncalves; E. Gonzalez-Romero; E. Griesmayer; C. Guerrero; F. Gunsing; P. Gurusamy; D. G. Jenkins; E. Jericha; Y. Kadi; F. Kaeppeler; D. Karadimos; N. Kivel; P. Koehler; T. Rauscher; n TOF Collaboration

doi:10.1103/PhysRevLett.110.022501

Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis

C. Lederer, C. Massimi, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. ChiaveriM. Chin, N. Colonna, G. Cortes, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillos, I. F. Goncalves, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimos, N. Kivel, P. Koehler, T. Rauscher, n TOF Collaboration

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Abstract

The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5-100 keV with uncertainties around 20%. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s-process production of Cu-63, Ni-64, and Zn-64 in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova

Original language	English
Article number	022501
Number of pages	5
Journal	Physical Review Letters
Volume	110
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.110.022501
Publication status	Published - 8 Jan 2013

Keywords

UNCERTAINTIES
NUCLEAR
MODEL CALCULATIONS
MASSIVE STARS
WEAK COMPONENT
RATES
HALF-LIFE
S-PROCESS NUCLEOSYNTHESIS
STANDARDIZATION
STATISTICAL-MODEL

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Lederer, C., Massimi, C., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Becares, V., Becvar, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calvino, F., Cano-Ott, D., Carrapico, C., Cerutti, F., ... n TOF Collaboration (2013). Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis. Physical Review Letters, 110(2), Article 022501. https://doi.org/10.1103/PhysRevLett.110.022501

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title = "Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis",

abstract = "The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5-100 keV with uncertainties around 20%. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s-process production of Cu-63, Ni-64, and Zn-64 in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova",

keywords = "UNCERTAINTIES, NUCLEAR, MODEL CALCULATIONS, MASSIVE STARS, WEAK COMPONENT, RATES, HALF-LIFE, S-PROCESS NUCLEOSYNTHESIS, STANDARDIZATION, STATISTICAL-MODEL",

author = "C. Lederer and C. Massimi and S. Altstadt and J. Andrzejewski and L. Audouin and M. Barbagallo and V. Becares and F. Becvar and F. Belloni and E. Berthoumieux and J. Billowes and V. Boccone and D. Bosnar and M. Brugger and M. Calviani and F. Calvino and D. Cano-Ott and C. Carrapico and F. Cerutti and E. Chiaveri and M. Chin and N. Colonna and G. Cortes and Cortes-Giraldo, {M. A.} and M. Diakaki and C. Domingo-Pardo and I. Duran and R. Dressler and N. Dzysiuk and C. Eleftheriadis and A. Ferrari and K. Fraval and S. Ganesan and Garcia, {A. R.} and G. Giubrone and Gomez-Hornillos, {M. B.} and Goncalves, {I. F.} and E. Gonzalez-Romero and E. Griesmayer and C. Guerrero and F. Gunsing and P. Gurusamy and Jenkins, {D. G.} and E. Jericha and Y. Kadi and F. Kaeppeler and D. Karadimos and N. Kivel and P. Koehler and T. Rauscher and {n TOF Collaboration}",

year = "2013",

month = jan,

day = "8",

doi = "10.1103/PhysRevLett.110.022501",

language = "English",

volume = "110",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "2",

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Lederer, C, Massimi, C, Altstadt, S, Andrzejewski, J, Audouin, L, Barbagallo, M, Becares, V, Becvar, F, Belloni, F, Berthoumieux, E, Billowes, J, Boccone, V, Bosnar, D, Brugger, M, Calviani, M, Calvino, F, Cano-Ott, D, Carrapico, C, Cerutti, F, Chiaveri, E, Chin, M, Colonna, N, Cortes, G, Cortes-Giraldo, MA, Diakaki, M, Domingo-Pardo, C, Duran, I, Dressler, R, Dzysiuk, N, Eleftheriadis, C, Ferrari, A, Fraval, K, Ganesan, S, Garcia, AR, Giubrone, G, Gomez-Hornillos, MB, Goncalves, IF, Gonzalez-Romero, E, Griesmayer, E, Guerrero, C, Gunsing, F, Gurusamy, P, Jenkins, DG, Jericha, E, Kadi, Y, Kaeppeler, F, Karadimos, D, Kivel, N, Koehler, P, Rauscher, T & n TOF Collaboration 2013, 'Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis', Physical Review Letters, vol. 110, no. 2, 022501. https://doi.org/10.1103/PhysRevLett.110.022501

TY - JOUR

T1 - Neutron Capture Cross Section of Unstable Ni-63

T2 - Implications for Stellar Nucleosynthesis

AU - Lederer, C.

AU - Massimi, C.

AU - Altstadt, S.

AU - Andrzejewski, J.

AU - Audouin, L.

AU - Barbagallo, M.

AU - Becares, V.

AU - Becvar, F.

AU - Belloni, F.

AU - Berthoumieux, E.

AU - Billowes, J.

AU - Boccone, V.

AU - Bosnar, D.

AU - Brugger, M.

AU - Calviani, M.

AU - Calvino, F.

AU - Cano-Ott, D.

AU - Carrapico, C.

AU - Cerutti, F.

AU - Chiaveri, E.

AU - Chin, M.

AU - Colonna, N.

AU - Cortes, G.

AU - Cortes-Giraldo, M. A.

AU - Diakaki, M.

AU - Domingo-Pardo, C.

AU - Duran, I.

AU - Dressler, R.

AU - Dzysiuk, N.

AU - Eleftheriadis, C.

AU - Ferrari, A.

AU - Fraval, K.

AU - Ganesan, S.

AU - Garcia, A. R.

AU - Giubrone, G.

AU - Gomez-Hornillos, M. B.

AU - Goncalves, I. F.

AU - Gonzalez-Romero, E.

AU - Griesmayer, E.

AU - Guerrero, C.

AU - Gunsing, F.

AU - Gurusamy, P.

AU - Jenkins, D. G.

AU - Jericha, E.

AU - Kadi, Y.

AU - Kaeppeler, F.

AU - Karadimos, D.

AU - Kivel, N.

AU - Koehler, P.

AU - Rauscher, T.

AU - n TOF Collaboration

PY - 2013/1/8

Y1 - 2013/1/8

N2 - The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5-100 keV with uncertainties around 20%. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s-process production of Cu-63, Ni-64, and Zn-64 in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova

AB - The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5-100 keV with uncertainties around 20%. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s-process production of Cu-63, Ni-64, and Zn-64 in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova

KW - UNCERTAINTIES

KW - NUCLEAR

KW - MODEL CALCULATIONS

KW - MASSIVE STARS

KW - WEAK COMPONENT

KW - RATES

KW - HALF-LIFE

KW - S-PROCESS NUCLEOSYNTHESIS

KW - STANDARDIZATION

KW - STATISTICAL-MODEL

U2 - 10.1103/PhysRevLett.110.022501

DO - 10.1103/PhysRevLett.110.022501

M3 - Letter

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 022501

ER -

Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis

Abstract

Keywords

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