Nuclear physics for the Re/Os clock

Mosconi, M; Heil, M; Kappeler, F; Plag, R; Mengoni, A; Fujii, K; Domingo-Pardo, C; Aerts, G; Terlizzi, R; Gallino, R; Abbondanno, U; Alvarez, H; Alvarez-Velarde, F; Andriamonje, S; Andrzejewski, J; Assimakopoulos, P; Audouin, L; Badurek, G; Baumann, P; Becvar, F; Berthoumieux, E; Calvio, F; Calviani, M; Cano-Ott, D; Capote, R; Carrapico, C; Cennini, P; Chepel, V; 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; Furman, W; Goncalves, I; Gonzalez-Romero, E; Gramegna, F; Guerrero, C; Gunsing, F; Haas, B; Haight, R; Herrera-Martinez, A; Igashira, M; Jericha, E; Kadi, Y; Karadimos, D; Karamanis, D; Kerveno, M; Koehler, P; Kossionides, E; Krtika, M; Lamboudis, C; Leeb, H; Lindote, A; Lopes, I; Lozano, M; Lukic, S; Marganiec, J; Marrone, S; Massimi, C; Mastinu, P; Milazzo, PM; Neves, F; Oberhummer, H; O'Brien, S; Pancin, J; Papachristodoulou, C; Papadopoulos, C; Paradela, C; Patronis, N; Pavlik, A; Pavlopoulos, P; Perrot, L; Pigni, MT; Plompen, A; Plukis, A; Poch, A; Pretel, C; Quesada, J; Rauscher, T; Reifarth, R; Rubbia, C; Rudolf, G; Rullhusen, P; Salgado, J; Santos, C; Sarchiapone, L; Savvidis, I; Stephan, C; Tagliente, G; Tain, JL; Tassan-Got, L; Tavora, L; Vannini, G; Vaz, P; Ventura, A; Villamarin, D; Vincente, MC; Vlachoudis, V; Vlastou, R; Voss, F; Walter, S; Wiescher, M; Wisshak, K

dc.contributor.author	Mosconi, M	en
dc.contributor.author	Heil, M	en
dc.contributor.author	Kappeler, F	en
dc.contributor.author	Plag, R	en
dc.contributor.author	Mengoni, A	en
dc.contributor.author	Fujii, K	en
dc.contributor.author	Domingo-Pardo, C	en
dc.contributor.author	Aerts, G	en
dc.contributor.author	Terlizzi, R	en
dc.contributor.author	Gallino, R	en
dc.contributor.author	Abbondanno, U	en
dc.contributor.author	Alvarez, H	en
dc.contributor.author	Alvarez-Velarde, F	en
dc.contributor.author	Andriamonje, S	en
dc.contributor.author	Andrzejewski, J	en
dc.contributor.author	Assimakopoulos, P	en
dc.contributor.author	Audouin, L	en
dc.contributor.author	Badurek, G	en
dc.contributor.author	Baumann, P	en
dc.contributor.author	Becvar, F	en
dc.contributor.author	Berthoumieux, E	en
dc.contributor.author	Calvio, F	en
dc.contributor.author	Calviani, M	en
dc.contributor.author	Cano-Ott, D	en
dc.contributor.author	Capote, R	en
dc.contributor.author	Carrapico, C	en
dc.contributor.author	Cennini, P	en
dc.contributor.author	Chepel, V	en
dc.contributor.author	Colonna, N	en
dc.contributor.author	Cortes, G	en
dc.contributor.author	Couture, A	en
dc.contributor.author	Cox, J	en
dc.contributor.author	Dahlfors, M	en
dc.contributor.author	David, S	en
dc.contributor.author	Dillmann, I	en
dc.contributor.author	Dridi, W	en
dc.contributor.author	Duran, I	en
dc.contributor.author	Eleftheriadis, C	en
dc.contributor.author	Embid-Segura, M	en
dc.contributor.author	Ferrant, L	en
dc.contributor.author	Ferrari, A	en
dc.contributor.author	Ferreira-Marques, R	en
dc.contributor.author	Furman, W	en
dc.contributor.author	Goncalves, I	en
dc.contributor.author	Gonzalez-Romero, E	en
dc.contributor.author	Gramegna, F	en
dc.contributor.author	Guerrero, C	en
dc.contributor.author	Gunsing, F	en
dc.contributor.author	Haas, B	en
dc.contributor.author	Haight, R	en
dc.contributor.author	Herrera-Martinez, A	en
dc.contributor.author	Igashira, M	en
dc.contributor.author	Jericha, E	en
dc.contributor.author	Kadi, Y	en
dc.contributor.author	Karadimos, D	en
dc.contributor.author	Karamanis, D	en
dc.contributor.author	Kerveno, M	en
dc.contributor.author	Koehler, P	en
dc.contributor.author	Kossionides, E	en
dc.contributor.author	Krtika, M	en
dc.contributor.author	Lamboudis, C	en
dc.contributor.author	Leeb, H	en
dc.contributor.author	Lindote, A	en
dc.contributor.author	Lopes, I	en
dc.contributor.author	Lozano, M	en
dc.contributor.author	Lukic, S	en
dc.contributor.author	Marganiec, J	en
dc.contributor.author	Marrone, S	en
dc.contributor.author	Massimi, C	en
dc.contributor.author	Mastinu, P	en
dc.contributor.author	Milazzo, PM	en
dc.contributor.author	Neves, F	en
dc.contributor.author	Oberhummer, H	en
dc.contributor.author	O'Brien, S	en
dc.contributor.author	Pancin, J	en
dc.contributor.author	Papachristodoulou, C	en
dc.contributor.author	Papadopoulos, C	en
dc.contributor.author	Paradela, C	en
dc.contributor.author	Patronis, N	en
dc.contributor.author	Pavlik, A	en
dc.contributor.author	Pavlopoulos, P	en
dc.contributor.author	Perrot, L	en
dc.contributor.author	Pigni, MT	en
dc.contributor.author	Plompen, A	en
dc.contributor.author	Plukis, A	en
dc.contributor.author	Poch, A	en
dc.contributor.author	Pretel, C	en
dc.contributor.author	Quesada, J	en
dc.contributor.author	Rauscher, T	en
dc.contributor.author	Reifarth, R	en
dc.contributor.author	Rubbia, C	en
dc.contributor.author	Rudolf, G	en
dc.contributor.author	Rullhusen, P	en
dc.contributor.author	Salgado, J	en
dc.contributor.author	Santos, C	en
dc.contributor.author	Sarchiapone, L	en
dc.contributor.author	Savvidis, I	en
dc.contributor.author	Stephan, C	en
dc.contributor.author	Tagliente, G	en
dc.contributor.author	Tain, JL	en
dc.contributor.author	Tassan-Got, L	en
dc.contributor.author	Tavora, L	en
dc.contributor.author	Vannini, G	en
dc.contributor.author	Vaz, P	en
dc.contributor.author	Ventura, A	en
dc.contributor.author	Villamarin, D	en
dc.contributor.author	Vincente, MC	en
dc.contributor.author	Vlachoudis, V	en
dc.contributor.author	Vlastou, R	en
dc.contributor.author	Voss, F	en
dc.contributor.author	Walter, S	en
dc.contributor.author	Wiescher, M	en
dc.contributor.author	Wisshak, K	en
dc.date.accessioned	2014-03-01T01:28:52Z
dc.date.available	2014-03-01T01:28:52Z
dc.date.issued	2008	en
dc.identifier.issn	0954-3899	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19013
dc.subject.classification	Physics, Nuclear	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	NEUTRON CROSS-SECTIONS	en
dc.subject.other	INELASTIC-SCATTERING	en
dc.subject.other	NUCLEOSYNTHESIS	en
dc.subject.other	OS-187	en
dc.subject.other	ISOTOPES	en
dc.subject.other	STARS	en
dc.subject.other	AGE	en
dc.title	Nuclear physics for the Re/Os clock	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0954-3899/35/1/014015	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0954-3899/35/1/014015	en
heal.identifier.secondary	014015	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Dating the age of the universe by the beta-decay of Re-187 (t(1/2) = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus Os-187 as well as its immediate s-only neighbor Os-186 are shielded from the r-process. Therefore, the radiogenic contribution to Os-187 can be derived via the local approximation of the s-process, which is well justified in this mass region: (<sigma > N-s)(187) = (<sigma > N-s)(186). Accordingly, accurate Maxwellian-averaged (n,gamma) cross sections have to be known for Os-186 and Os-187 over the full range of s-process temperatures. Because Os-187 has low-lying excited states, which are significantly populated during the s-process, neutron captures on these excited states have to be properly taken into account. The input for the corresponding Hauser-Feshbach calculations can be constrained by deriving the strength functions from a detailed resonance analysis of the measured (n,gamma) cross sections as well as by an additional measurement of the inelastic scattering cross section for the first exited level, which dominates the competition between the capture and scattering channels. This contribution reports on measurements of the neutron capture cross sections of Os-186, Os-187 and Os-188 from the eV region to 1MeV at the CERN/n_TOF facility and of the inelastic scattering cross section of Os-187 around 30 keV at the Karlsruhe 3.7 MV Van de Graaff accelerator. Based on these results and on a detailed resonance analysis, improved Maxwellian-averaged cross sections were obtained for thermal energies between 5 keV and 100 keV. The implications of these results for the Re/Os clock are discussed.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Physics G: Nuclear and Particle Physics	en
dc.identifier.doi	10.1088/0954-3899/35/1/014015	en
dc.identifier.isi	ISI:000252019800016	en
dc.identifier.volume	35	en
dc.identifier.issue	1	en