Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility

M. Mosconi; K. Fujii; A. Mengoni; C. Domingo-Pardo; F. Kaeppeler; U. Abbondanno; G. Aerts; H. Alvarez-Pol; F. Alvarez-Velarde; S. Andriamonje; J. Andrzejewski; P. Assimakopoulos; L. Audouin; G. Badurek; P. Baumann; F. Becvar; F. Belloni; E. Berthoumieux; S. Bisterzo; M. Calviani; F. Calvino; D. Cano-Ott; R. Capote; 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; W. Dridi; I. Duran; C. Eleftheriadis; M. Embid-Segura; L. Ferrant; A. Ferrari; R. Ferreira-Marques; L. Fitzpatrick; H. Frais-Koelbl; W. Furman; R. Gallino; I. Goncalves; E. Gonzalez-Romero; A. Goverdovski; F. Gramegna; E. Griesmayer; C. Guerrero; F. Gunsing; B. Haas; R. Haight; M. Heil; A. Herrera-Martinez; M. Igashira; S. Isaev; E. Jericha; Y. Kadi; D. Karamanis; D. Karadimos; M. Kerveno; V. Ketlerov; P. Koehler; V. Konovalov; E. Kossionides; M. Krticka; C. Lamboudis; H. Leeb; A. Lindote; I. Lopes; M. Lozano; S. Lukic; J. Marganiec; L. Marques; S. Marrone; C. Massimi; P. Mastinu; P. M. Milazzo; C. Moreau; F. Neves; H. Oberhummer; M. Oshima; S. O'Brien; J. Pancin; C. Papachristodoulou; C. Papadopoulos; C. Paradela; N. Patronis; A. Pavlik; P. Pavlopoulos; L. Perrot; R. Plag; A. Plompen; A. Plukis; A. Poch; J. Praena; C. Pretel; J. Quesada; T. Rauscher; R. Reifarth; M. Rosetti; C. Rubbia; G. Rudolf; P. Rullhusen; J. Salgado; L. Sarchiapone; I. Savvidis; C. Stephan; G. Tagliente; J. L. Tain; L. Tassan-Got; L. Tavora; R. Terlizzi; G. Vannini; P. Vaz; A. Ventura; D. Villamarin; M. C. Vincente; V. Vlachoudis; R. Vlastou; F. Voss; S. Walter; H. Wendler; M. Wiescher; K. Wisshak

doi:10.1103/PhysRevC.82.015802

Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility

M. Mosconi, K. Fujii, A. Mengoni, C. Domingo-Pardo, F. Kaeppeler, U. Abbondanno, G. Aerts, H. Alvarez-Pol, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulos, L. Audouin, G. Badurek, P. Baumann, F. Becvar, F. Belloni, E. Berthoumieux, S. Bisterzo, M. CalvianiF. Calvino, D. Cano-Ott, R. Capote, 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, W. Dridi, I. Duran, C. Eleftheriadis, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marques, L. Fitzpatrick, H. Frais-Koelbl, W. Furman, R. Gallino, I. Goncalves, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haas, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, D. Karamanis, D. Karadimos, M. Kerveno, V. Ketlerov, P. Koehler, V. Konovalov, E. Kossionides, M. Krticka, C. Lamboudis, H. Leeb, A. Lindote, I. Lopes, M. Lozano, S. Lukic, J. Marganiec, L. Marques, S. Marrone, C. Massimi, P. Mastinu, P. M. Milazzo, C. Moreau, F. Neves, H. Oberhummer, M. Oshima, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulos, C. Paradela, N. Patronis, A. Pavlik, P. Pavlopoulos, L. Perrot, R. Plag, A. Plompen, A. Plukis, A. Poch, J. Praena, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidis, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudis, R. Vlastou, F. Voss, S. Walter, H. Wendler, M. Wiescher, K. Wisshak

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Abstract

The precise determination of the neutron capture cross sections of Os-186 and Os-187 is important to define the s-process abundance of Os-187 at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of Os-187 due to the decay of the unstable Re-187 (t(1/2) = 41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of Os-186, Os-187, and Os-188 have been measured at the CERN n_TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt. rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT = 5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for Os-186, Os-187, and Os-188, respectively.

Original language	English
Article number	015802
Number of pages	10
Journal	Physical Review C (nuclear physics)
Volume	82
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.82.015802
Publication status	Published - 15 Jul 2010

Keywords

W-185
ISOTOPES
CAPTURE
AGE
OS-187
GIANT BRANCH STARS
INELASTIC-SCATTERING
S-PROCESS
METAL-POOR
STELLAR NUCLEOSYNTHESIS

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10.1103/PhysRevC.82.015802

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Mosconi, M., Fujii, K., Mengoni, A., Domingo-Pardo, C., Kaeppeler, F., Abbondanno, U., Aerts, G., Alvarez-Pol, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Belloni, F., Berthoumieux, E., Bisterzo, S., ... Wisshak, K. (2010). Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility. Physical Review C (nuclear physics), 82(1), Article 015802. https://doi.org/10.1103/PhysRevC.82.015802

@article{64fd6608d5404ab19fac2611cdd2c170,

title = "Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility",

abstract = "The precise determination of the neutron capture cross sections of Os-186 and Os-187 is important to define the s-process abundance of Os-187 at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of Os-187 due to the decay of the unstable Re-187 (t(1/2) = 41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of Os-186, Os-187, and Os-188 have been measured at the CERN n_TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt. rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT = 5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for Os-186, Os-187, and Os-188, respectively.",

keywords = "W-185, ISOTOPES, CAPTURE, AGE, OS-187, GIANT BRANCH STARS, INELASTIC-SCATTERING, S-PROCESS, METAL-POOR, STELLAR NUCLEOSYNTHESIS",

author = "M. Mosconi and K. Fujii and A. Mengoni and C. Domingo-Pardo and F. Kaeppeler and U. Abbondanno and G. Aerts and H. Alvarez-Pol 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 S. Bisterzo and M. Calviani and F. Calvino and D. Cano-Ott and R. Capote and {de Albornoz}, {A. Carrillo} 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 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 W. Furman and R. Gallino and I. Goncalves and E. Gonzalez-Romero and A. Goverdovski and F. Gramegna and E. Griesmayer and C. Guerrero and F. Gunsing and B. Haas and R. Haight and M. Heil and A. Herrera-Martinez and M. Igashira and S. Isaev and E. Jericha and Y. Kadi and D. Karamanis and D. Karadimos and M. Kerveno and V. Ketlerov and P. Koehler and V. Konovalov and E. Kossionides and M. Krticka and C. Lamboudis and H. Leeb and A. Lindote and I. Lopes and M. Lozano and S. Lukic and J. Marganiec and L. Marques and S. Marrone and C. Massimi and P. Mastinu and Milazzo, {P. M.} and C. Moreau and F. Neves and H. Oberhummer and M. Oshima and S. O'Brien and J. Pancin and C. Papachristodoulou and C. Papadopoulos and C. Paradela and N. Patronis and A. Pavlik and P. Pavlopoulos and L. Perrot and R. Plag and A. Plompen and A. Plukis and A. Poch and J. Praena and C. Pretel and J. Quesada and T. Rauscher and R. Reifarth and M. Rosetti and C. Rubbia and G. Rudolf and P. Rullhusen and J. Salgado and L. Sarchiapone and I. Savvidis and C. Stephan and G. Tagliente and Tain, {J. L.} and L. Tassan-Got and L. Tavora and R. Terlizzi and G. Vannini and P. Vaz and A. Ventura and D. Villamarin and Vincente, {M. C.} and V. Vlachoudis and R. Vlastou and F. Voss and S. Walter and H. Wendler and M. Wiescher and K. Wisshak",

year = "2010",

month = jul,

day = "15",

doi = "10.1103/PhysRevC.82.015802",

language = "English",

volume = "82",

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

issn = "2469-9985",

publisher = "American Physical Society",

number = "1",

}

Mosconi, M, Fujii, K, Mengoni, A, Domingo-Pardo, C, Kaeppeler, F, Abbondanno, U, Aerts, G, Alvarez-Pol, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calviani, M, Calvino, F, Cano-Ott, D, Capote, R, de Albornoz, AC, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dolfini, R, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Isaev, S, Jericha, E, Kadi, Y, Karamanis, D, Karadimos, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Massimi, C, Mastinu, P, Milazzo, PM, Moreau, C, Neves, F, Oberhummer, H, Oshima, M, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, JL, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, MC, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M & Wisshak, K 2010, 'Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility', Physical Review C (nuclear physics), vol. 82, no. 1, 015802. https://doi.org/10.1103/PhysRevC.82.015802

TY - JOUR

T1 - Neutron physics of the Re/Os clock. I

T2 - Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility

AU - Mosconi, M.

AU - Fujii, K.

AU - Mengoni, A.

AU - Domingo-Pardo, C.

AU - Kaeppeler, F.

AU - Abbondanno, U.

AU - Aerts, G.

AU - Alvarez-Pol, 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 - Belloni, F.

AU - Berthoumieux, E.

AU - Bisterzo, S.

AU - Calviani, M.

AU - Calvino, F.

AU - Cano-Ott, D.

AU - Capote, R.

AU - de Albornoz, A. Carrillo

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 - 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 - Furman, W.

AU - Gallino, R.

AU - Goncalves, I.

AU - Gonzalez-Romero, E.

AU - Goverdovski, A.

AU - Gramegna, F.

AU - Griesmayer, E.

AU - Guerrero, C.

AU - Gunsing, F.

AU - Haas, B.

AU - Haight, R.

AU - Heil, M.

AU - Herrera-Martinez, A.

AU - Igashira, M.

AU - Isaev, S.

AU - Jericha, E.

AU - Kadi, Y.

AU - Karamanis, D.

AU - Karadimos, D.

AU - Kerveno, M.

AU - Ketlerov, V.

AU - Koehler, P.

AU - Konovalov, V.

AU - Kossionides, E.

AU - Krticka, M.

AU - Lamboudis, C.

AU - Leeb, H.

AU - Lindote, A.

AU - Lopes, I.

AU - Lozano, M.

AU - Lukic, S.

AU - Marganiec, J.

AU - Marques, L.

AU - Marrone, S.

AU - Massimi, C.

AU - Mastinu, P.

AU - Milazzo, P. M.

AU - Moreau, C.

AU - Neves, F.

AU - Oberhummer, H.

AU - Oshima, M.

AU - O'Brien, S.

AU - Pancin, J.

AU - Papachristodoulou, C.

AU - Papadopoulos, C.

AU - Paradela, C.

AU - Patronis, N.

AU - Pavlik, A.

AU - Pavlopoulos, P.

AU - Perrot, L.

AU - Plag, R.

AU - Plompen, A.

AU - Plukis, A.

AU - Poch, A.

AU - Praena, J.

AU - Pretel, C.

AU - Quesada, J.

AU - Rauscher, T.

AU - Reifarth, R.

AU - Rosetti, M.

AU - Rubbia, C.

AU - Rudolf, G.

AU - Rullhusen, P.

AU - Salgado, J.

AU - Sarchiapone, L.

AU - Savvidis, I.

AU - Stephan, C.

AU - Tagliente, G.

AU - Tain, J. L.

AU - Tassan-Got, L.

AU - Tavora, L.

AU - Terlizzi, R.

AU - Vannini, G.

AU - Vaz, P.

AU - Ventura, A.

AU - Villamarin, D.

AU - Vincente, M. C.

AU - Vlachoudis, V.

AU - Vlastou, R.

AU - Voss, F.

AU - Walter, S.

AU - Wendler, H.

AU - Wiescher, M.

AU - Wisshak, K.

PY - 2010/7/15

Y1 - 2010/7/15

N2 - The precise determination of the neutron capture cross sections of Os-186 and Os-187 is important to define the s-process abundance of Os-187 at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of Os-187 due to the decay of the unstable Re-187 (t(1/2) = 41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of Os-186, Os-187, and Os-188 have been measured at the CERN n_TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt. rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT = 5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for Os-186, Os-187, and Os-188, respectively.

AB - The precise determination of the neutron capture cross sections of Os-186 and Os-187 is important to define the s-process abundance of Os-187 at the formation of the solar system. This quantity can be used to evaluate the radiogenic component of the abundance of Os-187 due to the decay of the unstable Re-187 (t(1/2) = 41.2 Gyr) and from this to infer the time duration of the nucleosynthesis in our galaxy (Re/Os cosmochronometer). The neutron capture cross sections of Os-186, Os-187, and Os-188 have been measured at the CERN n_TOF facility from 1 eV to 1 MeV, covering the entire energy range of astrophysical interest. The measurement has been performed by time-of-flight technique using isotopically enriched samples and two C6D6 scintillation detectors for recording the prompt. rays emitted in the capture events. Maxwellian averaged capture cross sections have been determined for thermal energies between kT = 5 and 100 keV corresponding to all possible s-process scenarios. The estimated uncertainties for the values at 30 keV are 4.1, 3.3, and 4.7% for Os-186, Os-187, and Os-188, respectively.

KW - W-185

KW - ISOTOPES

KW - CAPTURE

KW - AGE

KW - OS-187

KW - GIANT BRANCH STARS

KW - INELASTIC-SCATTERING

KW - S-PROCESS

KW - METAL-POOR

KW - STELLAR NUCLEOSYNTHESIS

U2 - 10.1103/PhysRevC.82.015802

DO - 10.1103/PhysRevC.82.015802

M3 - Article

SN - 2469-9985

VL - 82

JO - Physical Review C (nuclear physics)

JF - Physical Review C (nuclear physics)

IS - 1

M1 - 015802

ER -

Neutron physics of the Re/Os clock. I: Measurement of the (n, gamma) cross sections of Os-186,Os-187,Os-188 at the CERN n_TOF facility

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Keywords

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