Eur. Phys. J. A (2004) 21: 359-363
https://doi.org/10.1140/epja/i2004-10064-2

Letter

Band structures of the ¹²³Cs nucleus

¹ Department of Physics, Panjab University, 160 014, Chandigarh, India
² Nuclear Science Centre, Aruna Asaf Ali Marg, 110 067, New Delhi, India
³ Oliver Lodge Laboratory, University of Liverpool, L69 7ZE, UK

^* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

Band structures of the ¹²³Cs nucleus have been investigated using the ¹⁰⁰Mo(²⁸Si, p4n) reaction at a beam energy of 130 MeV. The previously observed rotational bands based on h _11/2, g _7/2 and g _9/2 orbitals have been extended. The excitation energies of these bands have been established with the help of interband transitions and those connecting to the low-energy levels established from the ⁺ /EC decay of ¹²³Ba (T _1/2 = 2.7 m). The bandhead of the g _9/2 band at the 328.1 keV () is proposed to be isomeric following arguments based on the intensity balance of the feeding and de-exciting transitions. New multiquasiparticle bands based on , and configurations have been identified.