https://doi.org/10.1140/epja/s10050-021-00515-7
Regular Article - Experimental Physics
The spin-parities of the 13.35 MeV state and high-lying excited states around 20 MeV in 
C nucleus
1
National Research Centre Kurchatov Institute, Akademika Kurchatova pl. 1, 123182, Moscow, Russia
2
Department of Physics, University of Jyväskylä, Jyväskylä, Finland
3
Universidad Autonoma del Estado de Mexico, Toluca, Mexico
4
M.V. Lomonosov Moscow State University, Moscow, Russia
5
Flerov Laboratory of Nuclear Reactions, JINR, Dubna, Russia
6
National Research Nuclear University MEPhI, Moscow, Russia
7
Institute of Nuclear Physics, Almaty, Republic of Kazakhstan
8
Al-Farabi Kazakh National University, Almaty, Republic of Kazakhstan
9
V. G. Khlopin Radium Institute, St. Petersburg, Russia
Received:
30
December
2020
Accepted:
5
June
2021
Published online:
25
June
2021
A study of the 
B(
He,d)C reaction at incident He energy 
= 25 MeV has been performed at the K-130 cyclotron at the University of Jyväskylä, Finland. Differential cross sections have been measured for the 13.35 MeV state and for the states with excitation energy around 20 MeV in C. The data were analyzed with the DWBA method. A tentative assignment, 4
, is given for the state at 13.35 MeV in a joint study of the reaction and inelastic scattering of 
-particles with the energy of 110 MeV. For the state at 20.98 MeV, the possible spin-parity 3 and the isospin T = 0 are assigned for the first time. Our model description of the broad state at 21.6 MeV is consistent with the previous assignments of isospin T = 0 and spin-parity of 2
or 3. The excited state at 22.4 MeV may have possible spin-parities of either 6 or 5. The collected statistics was insufficient to solve this question. Rotational bands which can exist in C were presented.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
