Deep excursion beyond the proton dripline. I. Argon and chlorine isotope chains
Journal article, 2018
The proton-unbound argon and chlorine isotopes have been studied by measuring trajectories of their decay-in-flight products by using a tracking technique with microstrip detectors. The proton (1p) and two-proton (2p) emission processes have been detected in the measured angular correlations "heavy-fragment"+p and "heavy-fragment"+p+p, respectively. The ground states of the previously unknown isotopes Cl30 and Cl28 have been observed for the first time, providing the 1p-separation energies Sp of -0.48(2) and -1.60(8), MeV, respectively. The relevant systematics of 1p- and 2p-separation energies have been studied theoretically in the core+p and core+p+p cluster models. The first-time observed excited states of Ar31 allow one to infer the 2p-separation energy S2p of 6(34) keV for its ground state. The first-time observed state in Ar29 with S2p=-5.50(18) MeV can be identified as either a ground state or an excited state according to different systematics.
Author
I. G. Mukha
Helmholtz
L Grigorenko
Joint Institute for Nuclear Research (JINR)
National Research Centre "Kurchatov Institute"
National Research Nuclear University
D. Kostyleva
Justus Liebig University Giessen
Helmholtz
L. Acosta
INFN - Laboratori Nazionali del Sud
Universidad Nacional Autónoma de México
E. Casarejos
University of Vigo
A. A. Ciemny
University of Warsaw
W. Dominik
University of Warsaw
J. A. Dueñas
University of Huelva
V. Dunin
Joint Institute for Nuclear Research (JINR)
J. M. Espino
University of Seville
A. Estradé
University of Edinburgh
F. Farinon
Helmholtz
A. S. Fomichev
Joint Institute for Nuclear Research (JINR)
H. Geissel
Helmholtz
Justus Liebig University Giessen
A. V. Gorshkov
Joint Institute for Nuclear Research (JINR)
Z. Janas
University of Warsaw
G. Kaminski
Joint Institute for Nuclear Research (JINR)
University of Warsaw
O. A. Kiselev
Helmholtz
R. Knobel
Justus Liebig University Giessen
Helmholtz
S. A. Krupko
Joint Institute for Nuclear Research (JINR)
M. Kuich
Warsaw University of Technology
University of Warsaw
Y. Litvinov
Helmholtz
G. Marquinez-Durán
University of Huelva
I. Martel
University of Huelva
C. Mazzocchi
University of Warsaw
C. Nociforo
Helmholtz
A. K. Ordúz
University of Huelva
M. Pfützner
Helmholtz
University of Warsaw
S. Pietri
Helmholtz
M. Pomorski
University of Warsaw
A. Prochazka
Helmholtz
S. Rymzhanova
Joint Institute for Nuclear Research (JINR)
A. M. Sanchez-Benitez
University of Huelva
C. Scheidenberger
Justus Liebig University Giessen
Helmholtz
P.G. Sharov
Joint Institute for Nuclear Research (JINR)
H. Simon
Helmholtz
B. Sitar
Comenius University in Bratislava
R. S. Slepnev
Joint Institute for Nuclear Research (JINR)
M. Stanoiu
Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering
P. Strmen
Comenius University in Bratislava
I. Szarka
Comenius University in Bratislava
M. Takechi
Helmholtz
Y. K. Tanaka
University of Tokyo
Helmholtz
H. Weick
Helmholtz
M. Winkler
Helmholtz
J. S. Winfield
Helmholtz
X. D. Xu
Beihang University
Justus Liebig University Giessen
Helmholtz
Mikhail Zhukov
Chalmers, Physics
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 98 6 064308Subject Categories
Accelerator Physics and Instrumentation
Subatomic Physics
Atom and Molecular Physics and Optics
DOI
10.1103/PhysRevC.98.064308