Determination of the neutron-capture rate of C-17 for r-process nucleosynthesis
Journal article, 2017

With the (RB)-B-3-LAND setup at GSI we have measured exclusive relative-energy spectra of the Coulomb dissociation of C-18 at a projectile energy around 425A MeV on a lead target, which are needed to determine the radiative neutron-capture cross sections of C-17 into the ground state of C-18. Those data have been used to constrain theoretical calculations for transitions populating excited states in C-18. This allowed to derive the astrophysical cross section sigma(n gamma)*. accounting for the thermal population of C-17 target states in astrophysical scenarios. The experimentally verified capture rate is significantly lower than those of previously obtained Hauser-Feshbach estimations at temperatures T-9 <= 1 GK. Network simulations with updated neutron-capture rates and hydrodynamics according to the neutrino-driven wind model as well as the neutron-star merger scenario reveal no pronounced influence of neutron capture of C-17 on the production of second-and third-peak elements in contrast to earlier sensitivity studies.

Relativistic Heavy-Ions

Light

Metal-Poor

Dissociation

Ejecta

Detector

Elements

Rich

Cosmochronology

Nuclear-Physics

Author

M. Heine

S. Typel

M. R. Wu

T. Adachi

Y. Aksyutina

J. Alcantara

S. Altstadt

H. Alvarez-Pol

N. Ashwood

L. Atar

T. Aumann

V. Avdeichikov

M. Barr

S. Beceiro-Novo

D. Bemmerer

J. Benlliure

C. A. Bertulani

K. Boretzky

M. J. G. Borge

G. Burgunder

M. Caamano

C. Caesar

E. Casarejos

W. Catford

J. Cederkall

S. Chakraborty

M. Chartier

L. V. Chulkov

D. Cortina-Gil

R. Crespo

U. D. Pramanik

Paloma Diaz Fernandez

I. Dillmann

Z. Elekes

J. Enders

O. Ershova

A. Estrade

F. Farinon

L. M. Fraile

M. Freer

M. Freudenberger

H. O. U. Fynbo

D. Galaviz

H. Geissel

R. Gernhauser

K. Gobel

P. Golubev

D. G. Diaz

Julius Hagdahl

Chalmers, Physics, Subatomic and Plasma Physics

T. Heftrich

M. Heil

Andreas Martin Heinz

Chalmers, Physics, Subatomic and Plasma Physics

A. Henriques

M. Holl

G. Ickert

A. Ignatov

B. Jakobsson

Håkan T Johansson

Chalmers, Physics, Subatomic and Plasma Physics

Björn Jonson

Chalmers, Physics, Subatomic and Plasma Physics

N. Kalantar-Nayestanaki

R. Kanungo

A. Kelic-Heil

R. Knobel

T. Kroll

R. Krucken

J. Kurcewicz

N. Kurz

M. Labiche

C. Langer

T. Le Bleis

R. Lemmon

O. Lepyoshkina

Simon Lindberg

Chalmers, Physics, Subatomic and Plasma Physics

J. Machado

J. Marganiec

G. Martinez-Pinedo

V. Maroussov

M. Mostazo

A. Movsesyan

A. Najafi

T. Neff

Thomas Nilsson

Chalmers, Physics, Subatomic and Plasma Physics

C. Nociforo

V. Panin

S. Paschalis

A. Perea

M. Petri

S. Pietri

R. Plag

A. Prochazka

A. Rahaman

G. Rastrepina

R. Reifarth

G. Ribeiro

M. V. Ricciardi

C. Rigollet

K. Riisager

M. Roder

D. Rossi

J. S. del Rio

D. Savran

H. Scheit

H. Simon

O. Sorlin

V. Stoica

B. Streicher

J. T. Taylor

O. Tengblad

S. Terashima

Ronja Thies

Chalmers, Physics, Subatomic and Plasma Physics

Y. Togano

E. Uberseder

J. Van de Walle

P. Velho

V. Volkov

A. Wagner

F. Wamers

H. Weick

M. Weigand

C. Wheldon

G. Wilson

C. Wimmer

J. S. Winfield

P. Woods

D. Yakorev

Mikhail Zhukov

Chalmers, Physics, Subatomic and Plasma Physics

A. Zilges

K. Zuber

Physical Review C

2469-9985 (ISSN)

Vol. 95 1 Article no 014613 -

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevC.95.014613

More information

Latest update

3/8/2018 1