EPJ Web of Conferences
Volume 63, 2013Heavy Ion Accelerator Symposium 2013
|Number of page(s)||4|
|Published online||19 December 2013|
Recent results of decay spectroscopy at RIBF
1 RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
2 International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191, China
3 School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
a e-mail: email@example.com
Published online: 19 December 2013
The neutron-rich nuclei 109Nb and 110Mo have been investigated by means of β-γ and isomer spectroscopy following in-flight fission of a 238U beam at 345 MeV/nucleon at the RIBF facility. A T1/2 = 150(30) ns isomer at 313 keV has been identified in 109Nb. The low-lying levels in 109Nb have been also populated following the β-decay of 109Zr. The observed hindrances of the electromagnetic transitions deexciting the isomeric state are discussed in terms of possible shape coexistence. For 110Mo, spectroscopic information on the low-lying levels of the quasi-γ band built on the 22+ state at 494 keV has been obtained for the first time. The experimental finding of the 22+ state being lower than the 41+ level suggests that axially-asymmetric γ softness is substantially enhanced in this nucleus. The experimental results are compared with model calculations based on the general Bohr Hamiltonian method. A new project of decay spectroscopy at RIBF, named EURICA, is also introduced.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.