EPJ Web Conf.
Volume 223, 2019IV International Conference on Nuclear Structure and Dynamics (NSD2019)
|Number of page(s)||4|
|Published online||04 December 2019|
Structural investigation of neutron-deficient Pt isotopes: the case of 178Pt
Institut für Kernphysik, Universität zu Köln, Zülpicher Strasse 77,
2 iThemba LABS, National Research Foundation, P.O.Box 722, Somerset West, 7129, South Africa
3 Department of Physics, Stellenbosch University, Matieland, Stellenbosch 7602, South Africa
4 Department of Physics, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa
* e-mail: firstname.lastname@example.org
Published online: 4 December 2019
Lifetime measurements with the recoil distance Doppler-shift technique have been performed to determine yrast E2 transition strengths in 178Pt. The experimental data are related to those on neighboring Pt isotopes, especially recent data on 180Pt, and compared to calculations within the interacting boson model and a Hartree-Fock Bogoliubov approach. These models predict prolate deformed ground states in Pt isotopes close to neutron midshell consistent with the experimental findings. Further, evidence was found that the prolate intruder structure observed in neutron-deficient Hg isotopes that is minimum in energy in 182Hg becomes the ground state configuration in 178Pt and neighboring 180Pt with nearly identical transition quadrupole moments. The new data on 178Pt are further discussed in the context of the systematics along the Pt isotopic chain with respect to a possible sharp shape transition towards a weakly deformed or a quasi-vibrational ground state whereas the prolate structure increases in energy in 174,176Pt and becomes an intruder configuration similar to, for example, 180,182Hg.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, 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.