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 Association of German Research Centres
L Grigorenko
National Research Nuclear University
National Research Centre "Kurchatov Institute"
Joint Institute for Nuclear Research (JINR)
D. Kostyleva
Helmholtz Association of German Research Centres
Justus Liebig University Giessen
L. Acosta
National Institute for Nuclear Physics
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 Association of German Research Centres
A. S. Fomichev
Joint Institute for Nuclear Research (JINR)
H. Geissel
Justus Liebig University Giessen
Helmholtz Association of German Research Centres
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 Association of German Research Centres
R. Knobel
Justus Liebig University Giessen
Helmholtz Association of German Research Centres
S. A. Krupko
Joint Institute for Nuclear Research (JINR)
M. Kuich
University of Warsaw
Warsaw University of Technology
Y. Litvinov
Helmholtz Association of German Research Centres
G. Marquinez-Durán
University of Huelva
I. Martel
University of Huelva
C. Mazzocchi
University of Warsaw
C. Nociforo
Helmholtz Association of German Research Centres
A. K. Ordúz
University of Huelva
M. Pfützner
University of Warsaw
Helmholtz Association of German Research Centres
S. Pietri
Helmholtz Association of German Research Centres
M. Pomorski
University of Warsaw
A. Prochazka
Helmholtz Association of German Research Centres
S. Rymzhanova
Joint Institute for Nuclear Research (JINR)
A. M. Sanchez-Benitez
University of Huelva
C. Scheidenberger
Helmholtz Association of German Research Centres
Justus Liebig University Giessen
P.G. Sharov
Joint Institute for Nuclear Research (JINR)
H. Simon
Helmholtz Association of German Research Centres
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 Association of German Research Centres
Y. K. Tanaka
University of Tokyo
Helmholtz Association of German Research Centres
H. Weick
Helmholtz Association of German Research Centres
M. Winkler
Helmholtz Association of German Research Centres
J. S. Winfield
Helmholtz Association of German Research Centres
X. D. Xu
Beihang University
Helmholtz Association of German Research Centres
Justus Liebig University Giessen
Mikhail Zhukov
Chalmers, Physics
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 98 6 064308Subject Categories (SSIF 2011)
Accelerator Physics and Instrumentation
Subatomic Physics
Atom and Molecular Physics and Optics
DOI
10.1103/PhysRevC.98.064308