Jeongsu Ha (KU Leuven)
August 24(Wed) - August 24(Wed), 2022
13:00 KST
IBS HQ C312
Title: Shape evolution of the Mo isotopes far from the valley of stability
Abstract
The structure of molybdenum (Z=42) isotopes is attractive since the predicted the ground-state shape are sensitive
to the way of calculation. Thus, a detailed study of the Mo isotopes provides valuable results to feedback the
nuclear theories. In this talk, I will introduce the two experiments studying the neutron-rich and proton-rich sides of the Mo isotopes.
First, the low-lying states of neutron-rich isotopes 106,108,110Mo have been investigated using the EURICA
HPGe array and the LaBr3 array. Based on the first 2+ state lifetime measurement and the identification of the
new states in the second 2+ band, the shape evolution with a triaxial degree of freedom is discussed. The results
are compared with the beyond mean-field calculations.
The proton-rich side has a different story. N=Z nuclei have been the subject for a long time due to their drastic
shape changes among them. In particular, 84Mo was revealed that it is a transitional nuclide that prolate-oblate
shape coexistence emerges according to the shell model calculations. To measure the B(E2), a key indicator for
the structural change, we performed the lifetime measurement with the TRIPLEX plunger setup coupled to the
GRETINA. I will present the preliminary results for the new measurement.