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.
Rich
Dissociation
Metal-Poor
Relativistic Heavy-Ions
Elements
Nuclear-Physics
Light
Ejecta
Cosmochronology
Detector
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
24699985 (ISSN) 24699993 (eISSN)
Vol. 95 1 Article no 014613 -Subject Categories
Physical Sciences
DOI
10.1103/PhysRevC.95.014613