2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 17, 153-157 (2003)
DOI: 10.1140/epja/i2002-10157-x

Short Note

Investigations of low- and high-spin states of $\chem{^{132}La}$

Vinod Kumar1, Pragya Das1, R.P. Singh2, S. Muralithar2 and R.K. Bhowmik2

1  Physics Department, Indian Institute of Technology-Bombay, Powai, Mumbai-400076, India
2  Nuclear Science Centre, Aruna Asaf Ali Marg, New Delhi-110067, India

pragya@phy.iitb.ac.in

(Received: 12 August 2002 / Revised version: 28 February 2003 / Published online: 7 May 2003)

Abstract
The fusion evaporation reaction $\chem{^{122}Sn(^{14}N,4n) ^{132}La}$ was used to populate the high-spin states of $\chem{^{132}La}$ at the beam energy of 60 MeV. A new band consisting of mostly E2 transitions has been discovered. This band has the interesting links to the ground state 2- and the isomeric state 6-. A new transition of energy 351 keV connecting the low-spin states of the positive-parity band based on the $\pi h_{11/2} \otimes \nu h_{11/2}$ particle configuration, has been found. This has played a very important role in resolving the existing ambiguities and inconsistencies in the spin assignment of the band head.

PACS
23.20.Lv - Gamma transitions and level energies.
23.20.En - Angular distribution and correlation measurements.
23.20.Gq - Multipole mixing ratios.
27.60.+j - $90 \leq A \leq 149$ .

© Società Italiana di Fisica, Springer-Verlag 2003