Thermonuclear reaction S-30(p,gamma)Cl-31 studied via Coulomb breakup of Cl-31
Journal article, 2014
Coulomb breakup at high energy in inverse kinematics of proton-rich Cl-31 was used to constrain the thermonuclear S-30(p,gamma)Cl-31 capture reaction rate under typical Type I x-ray burst conditions. This reaction is a bottleneck during rapid proton-capture nucleosynthesis (rp process), where its rate depends predominantly on the nuclear structure of Cl-31. Two low-lying states just above the proton-separation threshold of S-p = 296( 50) keV in Cl-31 have been identified experimentally using the (RB)-B-3-LAND setup at the GSI Helmholtzzentrum fur Schwerionenforschung GmbH. Both states are considered to play a key role in the thermonuclear S-30( p,gamma)Cl-31 capture reaction. Excitation energies of the first J(pi) = 1/2(+), 5/2(+) states have been extracted and the reaction rate for proton capture on S-30 under typical rp-process temperatures has been investigated.
AR-31
RELATIVISTIC HEAVY-IONS
REACTION-RATES
X-RAY-BURSTS
GRAPHS
DECAY
RP-PROCESS
TABLES
NUCLEI
Author
C. Langer
O. Lepyoshkina
Y. Aksyutina
T. Aumann
S. B. Novo
J. Benlliure
K. Boretzky
M. Chartier
D. Cortina
U. D. Pramanik
O. Ershova
H. Geissel
R. Gernhauser
M. Heil
G. Ickert
Håkan T Johansson
Chalmers, Fundamental Physics
Björn Jonson
Chalmers, Fundamental Physics
A. Kelic-Heil
A. Klimkiewicz
J. V. Kratz
R. Krucken
R. Kulessa
Kristian Larsson
Chalmers, Fundamental Physics
T. Le Bleis
R. Lemmon
K. Mahata
J. Marganiec
Thomas Nilsson
Chalmers, Fundamental Physics
V. Panin
R. Plag
W. Prokopowicz
R. Reifarth
V. Ricciardi
D. M. Rossi
S. Schwertel
H. Simon
K. Summerer
B. Streicher
J. Taylor
J. R. Vignote
F. Wamers
C. Wimmer
P. Z. Wu
Physical Review C - Nuclear Physics
05562813 (ISSN) 1089490x (eISSN)
Vol. 89 3 035806Subject Categories (SSIF 2011)
Subatomic Physics
Physical Sciences
Roots
Basic sciences
DOI
10.1103/PhysRevC.89.035806