2023 Impact factor 2.6
Hadrons and Nuclei

Eur. Phys. J. A 11, 5-8 (2001)

Short Note
Rotational bands in the doubly odd 130Cs nucleus

R. Kumar1, D. Mehta1, N. Singh1, H. Kaur1, A. Görgen2, S. Chmel2, R.P. Singh3 and S. Murlithar3

1  Department of Physics, Panjab University, Chandigarh 160 014, India
2  Institut für Strahlen und Kernphysik, Nussallee 14-16, Bonn, Germany
3  Nuclear Science Centre, Aruna Asaf Ali Marg, New Delhi 110 067, India


(Received: 20 February 2001 / Revised version: 3 May 2001 Communicated by D. Schwalm)

The band structures built on the 5- isomeric state ( T1/2=3.46 m) in the doubly odd 130Cs nucleus have been established up to $I=24\hbar$ via the 124Sn(11B, 5n)130Cs reaction. The previously observed bands based on the $\pi h_{11/2} \otimes \nu h_{11/2}$, $\pi
g_{7/2} \otimes \nu h_{11/2}$ and $\pi d_{5/2} \otimes
\nu h_{11/2}$ configurations and a positive-parity side band with multiple connections to the $\alpha=0$ signature partner of the yrast $\pi h_{11/2} \otimes \nu h_{11/2}$ band have been extended to higher spins. A new band based on the $\pi h_{11/2} \otimes \nu
g_{7/2}$ configuration is observed. The yrast $\pi h_{11/2} \otimes \nu h_{11/2}$ band exhibits anomalous signature splitting whose magnitude decreases up to spin 15 and then increases without restoring the normal signature splitting.

21.10.Re - Collective levels.
23.20.Lv - $\gamma$ transitions and level energies.
21.60.-n - Nuclear-structure models and methods.
27.60.+j - $90 \leq A \leq 149$ .

© Società Italiana di Fisica, Springer-Verlag 2001