Nuclear physics for the Re/Os clock

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

doi:10.1088/0954-3899/35/1/014015

Journal Articles Journal of Physics G: Nuclear and Particle Physics Year : 2008

Nuclear physics for the Re/Os clock

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M. Mosconi

Function : Author

M. Heil

Function : Author

F. Käppeler

Function : Author

R. Plag

Function : Author

A. Mengoni

Function : Author

K. Fujii

Function : Author

C. Domingo-Pardo

Function : Author

G. Aerts

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

R. Terlizzi

Function : Author

R. Gallino

Function : Author

U. Abbondanno

Function : Author

H. Alvarez

Function : Author

F. Alvarez-Velarde

Function : Author

S. Andriamonje

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

J. Andrzejewski

Function : Author

P. Assimakopoulos

Function : Author

L. Audouin

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

G. Badurek

Function : Author

P. Baumann

Function : Author

Département Recherches Subatomiques

F. Becvar

Function : Author

E. Berthoumieux

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

F. Calvino

Function : Author

M. Calviani

Function : Author

D. Cano-Ott

Function : Author

R. Capote

Function : Author

C. Carrapico

Function : Author

P. Cennini

Function : Author

V. Chepel

Function : Author

N. Colonna

Function : Author

G. Cortes

Function : Author

A. Couture

Function : Author

J. Cox

Function : Author

M. Dahlfors

Function : Author

S. David

Function : Author
PersonId : 742757
IdHAL : sylvain-david-in2p3

Institut de Physique Nucléaire d'Orsay

I. Dillmann

Function : Author

W. Dridi

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

I. Duran

Function : Author

C. Eleftheriadis

Function : Author

M. Embid-Segura

Function : Author

L. Ferrant

Function : Author

Institut de Physique Nucléaire d'Orsay

Anthony Ferrari

Function : Author

R. Ferreira-Marques

Function : Author

W. Furman

Function : Author

I. Goncalves

Function : Author

E. Gonzalez-Romero

Function : Author

F. Gramegna

Function : Author

C. Guerrero

Function : Author

F. Gunsing

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

B. Haas

Function : Author

Centre d'Etudes Nucléaires de Bordeaux Gradignan

R. Haight

Function : Author

A. Herrera-Martinez

Function : Author

M. Igashira

Function : Author

E. Jericha

Function : Author

Y. Kadi

Function : Author

D. Karadimos

Function : Author

D. Karamanis

Function : Author

M. Kerveno

Function : Author
PersonId : 737538
IdHAL : maelle-kerveno
ORCID : 0000-0003-3247-6372

Département Recherches Subatomiques

P. Koehler

Function : Author

E. Kossionides

Function : Author

M. Krticka

Function : Author

C. Lamboudis

Function : Author

H. Leeb

Function : Author

A. Lindote

Function : Author

I. Lopes

Function : Author
PersonId : 755275
ORCID : 0000-0001-5760-8939

M. Lozano

Function : Author

S. Lukic

Function : Author

Département Recherches Subatomiques

J. Marganiec

Function : Author

S. Marrone

Function : Author

C. Massimi

Function : Author

P. Mastinu

Function : Author

P. M Milazzo

Function : Author

F. Neves

Function : Author

H. Oberhummer

Function : Author

S. O'Brien

Function : Author

J. Pancin

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

C. Papachristodoulou

Function : Author

C. Papadopoulos

Function : Author

C. Paradela

Function : Author

N. Patronis

Function : Author

A. Pavlik

Function : Author

P. Pavlopoulos

Function : Author

L. Perrot

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

M. T Pigni

Function : Author

A. Plompen

Function : Author

A. Plukis

Function : Author

Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

A. Poch

Function : Author

C. Pretel

Function : Author

J. Quesada

Function : Author

T. Rauscher

Function : Author

R. Reifarth

Function : Author

C. Rubbia

Function : Author

G. Rudolf

Function : Author

Département Recherches Subatomiques

P. Rullhusen

Function : Author

J. Salgado

Function : Author

C. Santos

Function : Author

L. Sarchiapone

Function : Author

I. Savvidis

Function : Author

C. Stephan

Function : Author

Institut de Physique Nucléaire d'Orsay

G. Tagliente

Function : Author

J. L Tain

Function : Author

L. Tassan-Got

Function : Author

Institut de Physique Nucléaire d'Orsay

L. Tavora

Function : Author

G. Vannini

Function : Author

P. Vaz

Function : Author

A. Ventura

Function : Author

D. Villamarin

Function : Author

M. C Vincente

Function : Author

V. Vlachoudis

Function : Author

R. Vlastou

Function : Author

F. Voss

Function : Author

S. Walter

Function : Author

M. Wiescer

Function : Author

K. Wisshak

Function : Author

Abstract

Dating the age of the universe by the β-decay of 187Re (t1/2 = 41.2 Gyr) requires the accurate assessment of the s-process reaction flow. The daughter nucleus 187Os as well as its immediate s-only neighbor 186Os are shielded from the r-process. Therefore, the radiogenic contribution to 187Os can be derived via the local approximation of the s-process, which is well justified in this mass region: (σNs)187 = (σNs)186. Accordingly, accurate Maxwellian-averaged (n, γ) cross sections have to be known for 186Os and 187Os over the full range of s-process temperatures. Because 187Os 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, γ) 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 186Os, 187Os and 188Os from the eV region to 1 MeV at the CERN/n_TOF facility and of the inelastic scattering cross section of 187Os 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.

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Nuclear Experiment [nucl-ex]

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Submitted on : Friday, December 14, 2007-12:57:05 PM

Last modification on : Thursday, April 11, 2024-1:18:11 PM

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in2p3-00197142 , version 1 (14-12-2007)

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HAL Id : in2p3-00197142 , version 1
DOI : 10.1088/0954-3899/35/1/014015

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M. Mosconi, M. Heil, F. Käppeler, R. Plag, A. Mengoni, et al.. Nuclear physics for the Re/Os clock. Journal of Physics G: Nuclear and Particle Physics, 2008, 35, pp.014015. ⟨10.1088/0954-3899/35/1/014015⟩. ⟨in2p3-00197142⟩

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Nuclear physics for the Re/Os clock

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