Evidence for the First Excited State of H 7
Journal article, 2020
The H7 system was populated in the H2(He8,He3)H7 reaction with a 26 AMeV He8 beam. The H7 missing mass energy spectrum, the H3 energy and angular distributions in the H7 decay frame were reconstructed. The H7 missing mass spectrum shows a peak, which can be interpreted either as unresolved 5/2+ and 3/2+ doublet or one of these states at 6.5(5) MeV. The data also provide indications of the 1/2+ ground state of H7 located at 1.8(5) MeV with quite a low population cross section of ∼25 μb/sr within angular range θc.m.≃(17°-27°).
Author
A.A. Bezbakh
Joint Institute for Nuclear Research (JINR)
Slezska univerzita v Opave
V. Chudoba
Joint Institute for Nuclear Research (JINR)
Slezska univerzita v Opave
S. A. Krupko
National Research Centre "Kurchatov Institute"
Joint Institute for Nuclear Research (JINR)
S. G. Belogurov
Joint Institute for Nuclear Research (JINR)
National Research Nuclear University
D. Biare
Joint Institute for Nuclear Research (JINR)
A. S. Fomichev
Joint Institute for Nuclear Research (JINR)
Dubna International University
E. M. Gazeeva
Joint Institute for Nuclear Research (JINR)
A. V. Gorshkov
Joint Institute for Nuclear Research (JINR)
L Grigorenko
National Research Centre "Kurchatov Institute"
Joint Institute for Nuclear Research (JINR)
National Research Nuclear University
G. Kaminski
University of Warsaw
Joint Institute for Nuclear Research (JINR)
O. A. Kiselev
Helmholtz
D. Kostyleva
Helmholtz
Justus Liebig University Giessen
M. Yu Kozlov
Joint Institute for Nuclear Research (JINR)
B. Mauyey
Institute of Nuclear Physics, National Nuclear Center of the Republic of Kazakhstan
Joint Institute for Nuclear Research (JINR)
I. G. Mukha
Helmholtz
I. A. Muzalevskii
Slezska univerzita v Opave
Joint Institute for Nuclear Research (JINR)
E.Y. Nikolskii
National Research Centre "Kurchatov Institute"
Joint Institute for Nuclear Research (JINR)
Y. L. Parfenova
Joint Institute for Nuclear Research (JINR)
W. Piatek
University of Warsaw
Joint Institute for Nuclear Research (JINR)
A. M. Quynh
Institute for Nuclear Research Vietnam
Joint Institute for Nuclear Research (JINR)
V. N. Schetinin
Joint Institute for Nuclear Research (JINR)
A. Serikov
Joint Institute for Nuclear Research (JINR)
S. I. Sidorchuk
Joint Institute for Nuclear Research (JINR)
P.G. Sharov
Slezska univerzita v Opave
Joint Institute for Nuclear Research (JINR)
R. S. Slepnev
Joint Institute for Nuclear Research (JINR)
S. V. Stepantsov
Joint Institute for Nuclear Research (JINR)
A. Swiercz
Joint Institute for Nuclear Research (JINR)
AGH University of Science and Technology
P. Szymkiewicz
AGH University of Science and Technology
Joint Institute for Nuclear Research (JINR)
G. M. Ter-Akopian
Dubna International University
Joint Institute for Nuclear Research (JINR)
R. Wolski
Polish Academy of Sciences
Joint Institute for Nuclear Research (JINR)
B. Zalewski
Joint Institute for Nuclear Research (JINR)
University of Warsaw
Mikhail Zhukov
Chalmers, Physics
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 124 2 022502Subject Categories
Accelerator Physics and Instrumentation
Subatomic Physics
Astronomy, Astrophysics and Cosmology
DOI
10.1103/PhysRevLett.124.022502