Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-02-18
Eur.Phys.J.A42:583-590,2009
Physics
Nuclear Physics
Nuclear Theory
Accepted for publication in Eur. Phys. J. A, as a contribution to the ENAM08 conference
Scientific paper
10.1140/epja/i2008-10742-y
Low-frequency modes of excitation in deformed neutron-rich nuclei are studied by means of the quasiparticle random-phase approximation on the Skyrme-Hartree-Fock-Bogoliubov mean field. We investigate the microscopic structure of the soft $K^{\pi}=0^{+}$ modes systematically in neutron-rich Magnesium isotopes with $N=22, 24, 26$ and 28 close to the drip line, and it is found that the strong collectivity in $^{34}$Mg and $^{40}$Mg is acquired due to the coherent coupling between the $\beta$ vibration and the pairing vibration of neutrons. Microscopic structure of the $K^{\pi}=2^{+}$ modes changes gradually associated with the location of the Fermi level of neutrons, and it is found that the proton particle-hole excitation generating the $\gamma-$vibrational mode in $^{24}$Mg continues to play a key role in the near-drip-line nucleus $^{40}$Mg. The low-frequency octupole excitations are also investigated and the microscopic mechanism for the enhancement of transition strengths is discussed.
No associations
LandOfFree
Skyrme-QRPA calculations for low-lying excitation modes in deformed neutron-rich nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Skyrme-QRPA calculations for low-lying excitation modes in deformed neutron-rich nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Skyrme-QRPA calculations for low-lying excitation modes in deformed neutron-rich nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-127869