Neutron capture cross sections for the Re/Os clock

Mosconi, M. and Mengoni, A. and Heil, M. and Kappeler, F. and Aerts, G. and Terlizzi, R. and Abbondanno, U. and Alvarez, H. and Alvarez-Velarde, F. and Andriamojie, S. and Andrzejewski, J. and Assimakopoulos, R. and Audouin, L. and Badurek, G. and Baumann, P. and Becvar, F. and Benlliure, J. and Berthoumieux, E. and Calvino, F. and Can-Ott, D. and Capote, R. and de Albornoz, A. C. and Cennini, R. and Chepli, V. and Chiaveri, E. and Colonna, N. and Cortes, G. and Cortina, D. and Couture, A. and Cox, J. and David, S. and Dolfini, R. and Domingo-Pardo, C. and Dridi, W. and Duran, I. and Embid-Segura, M. and Ferrant, L. and Ferrari, A. and Fitzpatrick, L. and Ferreira-Marques, R. and Frais-Kolbl, H. and Fujii, K. and Furman, W. and Guerrero, C. and Goncalves, I. and Gallino, R. and Gonzalez-Romero, E. and Goverdovski, A. and Gramegna, F. and Griesmayer, E. and Gunsing, F. and Haas, B. and Haight, R. and Herrera-Martinez, A. and Igashira, M. and Isaev, S. and Jericha, E. and Kadi, Y. and Karamanis, D. and Karadimos, D. and Kerveno, M. and Ketlerov', V. and Koehler, R. and Konovalov, V. and Kossionides, E. and Krticka, M. and Lamboudis, C. and Leeb, H. and Lindote, A. and Lopes, I. and Lozano, M. and Lukic, S. and Marganiec, J. and Marques, L. and Martone, S. and Mastinu, R. and Milazzo, R. and Moreau, C. and Neves, F. and Oberhummer, H. and O'Brien, S. and Oshima, M. and Pancin, J. and Papachristodoulou, C. and Papadopoulos, C. and Paradela, C. and Patronis, N. and Pavlik, A. and Pavlopoulos, R. and Perrot, L. and Plag, R. and Plompen, A. and Plukis, A. and Poch, A. and Pretel, C. and Quesada, J. and Rauscher, T. and Reifarth, R. and Rosetti, M. and Rubbia, C. and Rudolf, G. and Rullhusen, R. and Salgado, J. and Sarchiapone, L. and Stephan, C. and Tagliente, G. and Tain, J. L. and Tassan-Got, L. and Tavora, L. and Vannini, G. and Vaz, R. and Ventura, A. and Villamarin, D. and Vincente, M. C. and Vlachoudis, V. and Vlastou, R. and Voss, F. and Wendle, H. and Wiescher, M. and Wisshak, K.. (2005) Neutron capture cross sections for the Re/Os clock. In: International Conference on Nuclear Data for Science and Technology, AIP Conference Proceedings Volume 769. Melville (N.Y.), pp. 1335-1338.

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Official URL: http://edoc.unibas.ch/dok/A5253947

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Abstract

The radioactive decay of Re-187 -< Os-187 (t(1/2) = 43 Gyr) is suited for dating the onset of heavy-element nucleosynthesis. The radiogenic contribution to the Os-187 abundance is the difference between the natural abundance and the corresponding s-process component. This component can be obtained via the well-established sigma N systematics using the neighboring s-only isotope Os-186, provided the neutron-capture cross sections of both isotopes are known with sufficient accuracy. We report on a new set of experiments performed with a C6D6 detector array at the n_TOF neutron spallation facility of CERN. The capture cross sections of Os-186, Os-187, and Os-188 have been measured in the neutron-energy range between 1 eV and 1 MeV, and Maxwellian-averaged cross sections were deduced for the relevant thermal energies from kT = 5 keV to 100 keV.

Faculties and Departments:	05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:	Rauscher, Thomas
Item Type:	Conference or Workshop Item, refereed
Conference or workshop item Subtype:	Conference Paper
Publisher:	American institute of physics
Note:	Publication type according to Uni Basel Research Database: Conference paper
Identification Number:	isi: 000230511801059 doi: 10.1063/1.1945252
Last Modified:	04 Sep 2015 14:31
Deposited On:	22 Mar 2012 13:55

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