Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

C. Massimi; P. Koehler; S. Bisterzo; N. Colonna; R. Gallino; F. Gunsing; F. Kaeppeler; G. Lorusso; A. Mengoni; M. Pignatari; G. Vannini; U. Abbondanno; G. Aerts; H. Alvarez; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; P. Assimakopoulos; L. Audouin; G. Badurek; M. Barbagallo; P. Baumann; F. Becvar; F. Belloni; M. Bennett; E. Berthoumieux; M. Calviani; F. Calvino; D. Cano-Ott; R. Capote; C. Carrapico; A. Carrillo de Albornoz; P. Cennini; V. Chepel; E. Chiaveri; 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; T. Rauscher; N TOF Collaboration

doi:10.1103/PhysRevC.85.044615

Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

C. Massimi
, P. Koehler
, S. Bisterzo
, N. Colonna
, R. Gallino
, F. Gunsing
, F. Kaeppeler
, G. Lorusso
, A. Mengoni
, M. Pignatari
, G. Vannini
, U. Abbondanno
, G. Aerts
, H. Alvarez
, F. Alvarez-Velarde
, S. Andriamonje
, J. Andrzejewski
, P. Assimakopoulos
, L. Audouin
, G. Badurek

M. Barbagallo, P. Baumann, F. Becvar, F. Belloni, M. Bennett, E. Berthoumieux, M. Calviani, F. Calvino, D. Cano-Ott, R. Capote, C. Carrapico, A. Carrillo de Albornoz, P. Cennini, V. Chepel, E. Chiaveri, 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, T. Rauscher, N TOF Collaboration

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

63 Citations (Scopus)

Abstract

We have measured the neutron capture cross sections of the stable magnesium isotopes Mg-24,Mg-25,Mg-26 in the energy range of interest to the s process using the neutron time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and from samples enriched in Mg-25 and Mg-26 were recorded using the total energy method based on (C6H6)-H-2 detectors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30 keV the new values of the stellar cross section for Mg-24, Mg-25, and Mg-26 are 3.8 +/- 0.2 mb, 4.1 +/- 0.6 mb, and 0.14 +/- 0.01 mb, respectively.

Original language	English
Article number	044615
Number of pages	15
Journal	Physical Review C (nuclear physics)
Volume	85
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.85.044615
Publication status	Published - 20 Apr 2012

Keywords

NUCLEAR
WAVE
RADIATIVE-CAPTURE
DIPOLE TRANSITIONS
GIANT BRANCH STARS
MASSIVE STARS
OF-FLIGHT FACILITY
S-PROCESS NUCLEOSYNTHESIS
REACTION-RATES
EVOLUTION

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10.1103/PhysRevC.85.044615

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Massimi, C., Koehler, P., Bisterzo, S., Colonna, N., Gallino, R., Gunsing, F., Kaeppeler, F., Lorusso, G., Mengoni, A., Pignatari, M., Vannini, G., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., ... N TOF Collaboration (2012). Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications. Physical Review C (nuclear physics), 85(4), Article 044615. https://doi.org/10.1103/PhysRevC.85.044615

@article{18d86b2ab42f4628b03aee536e744f7e,

title = "Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications",

abstract = "We have measured the neutron capture cross sections of the stable magnesium isotopes Mg-24,Mg-25,Mg-26 in the energy range of interest to the s process using the neutron time-of-flight facility n\_TOF at CERN. Capture events from a natural metal sample and from samples enriched in Mg-25 and Mg-26 were recorded using the total energy method based on (C6H6)-H-2 detectors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30 keV the new values of the stellar cross section for Mg-24, Mg-25, and Mg-26 are 3.8 +/- 0.2 mb, 4.1 +/- 0.6 mb, and 0.14 +/- 0.01 mb, respectively.",

keywords = "NUCLEAR, WAVE, RADIATIVE-CAPTURE, DIPOLE TRANSITIONS, GIANT BRANCH STARS, MASSIVE STARS, OF-FLIGHT FACILITY, S-PROCESS NUCLEOSYNTHESIS, REACTION-RATES, EVOLUTION",

author = "C. Massimi and P. Koehler and S. Bisterzo and N. Colonna and R. Gallino and F. Gunsing and F. Kaeppeler and G. Lorusso and A. Mengoni and M. Pignatari and G. Vannini and U. Abbondanno and G. Aerts and H. Alvarez and F. Alvarez-Velarde and S. Andriamonje and J. Andrzejewski and P. Assimakopoulos and L. Audouin and G. Badurek and M. Barbagallo and P. Baumann and F. Becvar and F. Belloni and M. Bennett and E. Berthoumieux and M. Calviani and F. Calvino and D. Cano-Ott and R. Capote and C. Carrapico and \{Carrillo de Albornoz\}, A. and P. Cennini and V. Chepel and E. Chiaveri 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 T. Rauscher and \{N TOF Collaboration\}",

year = "2012",

month = apr,

day = "20",

doi = "10.1103/PhysRevC.85.044615",

language = "English",

volume = "85",

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

issn = "2469-9985",

publisher = "American Physical Society",

number = "4",

}

Massimi, C, Koehler, P, Bisterzo, S, Colonna, N, Gallino, R, Gunsing, F, Kaeppeler, F, Lorusso, G, Mengoni, A, Pignatari, M, Vannini, G, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Barbagallo, M, Baumann, P, Becvar, F, Belloni, F, Bennett, M, Berthoumieux, E, Calviani, M, Calvino, F, Cano-Ott, D, Capote, R, Carrapico, C, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, 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, Rauscher, T & N TOF Collaboration 2012, 'Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications', Physical Review C (nuclear physics), vol. 85, no. 4, 044615. https://doi.org/10.1103/PhysRevC.85.044615

TY - JOUR

T1 - Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

AU - Massimi, C.

AU - Koehler, P.

AU - Bisterzo, S.

AU - Colonna, N.

AU - Gallino, R.

AU - Gunsing, F.

AU - Kaeppeler, F.

AU - Lorusso, G.

AU - Mengoni, A.

AU - Pignatari, M.

AU - Vannini, G.

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 - Barbagallo, M.

AU - Baumann, P.

AU - Becvar, F.

AU - Belloni, F.

AU - Bennett, M.

AU - Berthoumieux, E.

AU - Calviani, M.

AU - Calvino, F.

AU - Cano-Ott, D.

AU - Capote, R.

AU - Carrapico, C.

AU - Carrillo de Albornoz, A.

AU - Cennini, P.

AU - Chepel, V.

AU - Chiaveri, E.

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 - Rauscher, T.

AU - N TOF Collaboration

PY - 2012/4/20

Y1 - 2012/4/20

N2 - We have measured the neutron capture cross sections of the stable magnesium isotopes Mg-24,Mg-25,Mg-26 in the energy range of interest to the s process using the neutron time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and from samples enriched in Mg-25 and Mg-26 were recorded using the total energy method based on (C6H6)-H-2 detectors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30 keV the new values of the stellar cross section for Mg-24, Mg-25, and Mg-26 are 3.8 +/- 0.2 mb, 4.1 +/- 0.6 mb, and 0.14 +/- 0.01 mb, respectively.

AB - We have measured the neutron capture cross sections of the stable magnesium isotopes Mg-24,Mg-25,Mg-26 in the energy range of interest to the s process using the neutron time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and from samples enriched in Mg-25 and Mg-26 were recorded using the total energy method based on (C6H6)-H-2 detectors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30 keV the new values of the stellar cross section for Mg-24, Mg-25, and Mg-26 are 3.8 +/- 0.2 mb, 4.1 +/- 0.6 mb, and 0.14 +/- 0.01 mb, respectively.

KW - NUCLEAR

KW - WAVE

KW - RADIATIVE-CAPTURE

KW - DIPOLE TRANSITIONS

KW - GIANT BRANCH STARS

KW - MASSIVE STARS

KW - OF-FLIGHT FACILITY

KW - S-PROCESS NUCLEOSYNTHESIS

KW - REACTION-RATES

KW - EVOLUTION

U2 - 10.1103/PhysRevC.85.044615

DO - 10.1103/PhysRevC.85.044615

M3 - Article

SN - 2469-9985

VL - 85

JO - Physical Review C (nuclear physics)

JF - Physical Review C (nuclear physics)

IS - 4

M1 - 044615

ER -

Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

Abstract

Keywords

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