Speaker
Dr
Lang Liu
(Peking University)
Description
The low-lying excited states of $^{10}$Be and $^{12}$Be are investigated within a no-core Monte Carlo Shell Model (MCSM) framework employing a realistic potential obtained via the Unitary Correlation Operator Method. The excitation energies of the 2$^+_1$ and 2$^+_2$ states and the B(E2;$\,2^+_{1}\rightarrow$ 0$^+_{g.s.}$) for $^{10}$Be in the MCSM with a treatment of spurious center-of-mass motion show good agreement with experimental data. The deformation properties of the 2$^+_1$ , 2$^+_2$ states for $^{10}$Be and of the 2$^+_1$ state for $^{12}$Be are studied in terms of quadrupole moments, E2 transitions and the single-particle occupations. The E2 transition probability of $^{10}$C, the mirror nucleus of $^{10}$Be, is also presented. The triaxial deformation of $^{10}$Be is tested by the B(E2;$\,2^+_{2}\rightarrow$ 2$^+_{1}$) value. The removal of the spurious center-of-mass motion shifts the 1$^-_1$ level significantly, improving agreement with experiment.
Primary author
Dr
Lang Liu
(Peking University)
Co-authors
Prof.
Robert Roth
(Institut f\"{u}r Kernphysik, Technische Universit\"{a}t Darmstadt)
Prof.
Shimizu Noritaka
(Tokyo University)
Prof.
Takaharu Otsuka
(Tokyo University)
Prof.
Yutaka Utsuno
(Japan Atomic Energy Agency)
