https://doi.org/10.1140/epja/s10050-021-00373-3
Regular Article – Experimental Physics
Nuclear level density and thermal properties of 
from neutron evaporation
1
Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, 700 064, Kolkata, India
2
Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, 400 094, Mumbai, India
3
Institute of Fundamental and Applied Sciences, Duy Tan University, 700000, Ho Chi Minh City, Vietnam
4
Faculty of Natural Sciences, Duy Tan University, 550000, Danang, Vietnam
a roypratap@vecc.gov.in, pratapproy@gmail.com
Received:
24
November
2020
Accepted:
27
January
2021
Published online:
5
February
2021
The nuclear level density of has been measured in an excitation energy range of 
–9 MeV using the experimental neutron evaporation spectra from the 
(p, n) reaction. The experimental level densities were compared with the microscopic Hartree–Fock BCS (HFBCS), Hartree–Fock–Bogoliubov plus combinatorial (HFB + C), and an exact pairing plus independent particle model (EP + IPM) calculations. It is observed that the EP + IPM provides the best description of the experimental data among the three. The thermal properties (entropy and temperature) of have been investigated from the measured level densities. The experimental temperature profile as well as the calculated heat capacity show distinct signatures of a transition from the strongly-paired nucleonic phase to the weakly paired one in this nucleus.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
