Speaker
Sorin Pascu
(IFIN-HH)
Description
We present the first evidence of maximum octupole collectivity in the Gd isotopic chain through a direct measurement of an enhanced B(E3) value in 150Gd. This result was achieved via two highly sensitive experiments designed to determine the lifetime of the first 3− state and the weak E3 decay branch to the ground state. With a measured B(E3) strength of 45(5) W.u., this value ranks among the highest and the most precise recorded in this region, comparable in strength to those observed in neutron-rich Ba nuclei, a region traditionally known for its enhanced octupole collectivity. We compare the available experimental results for the E3 strengths in the Gd isotopic chain with five state-of-the-art theoretical models: the quasi-particle random phase approximation (QRPA), the time-dependent Hartree-Fock (TDHF), the quadrupole-octupole collective Hamiltonian (QOCH), the mean-field mapped interacting boson model (m-IBM), and the triaxial projected shell model (TPSM). We conclude that the QRPA provides a strong explanation for the increasing trend of B(E3) values in Gd nuclei with N=82–86.
Primary author
Sorin Pascu
(IFIN-HH)
Co-authors
Abhishek
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Adina Coman
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Alexandru Negret
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Alina Ionescu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Aman Gandhi
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Andreea Mitu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Andrei Turturica
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Constantin Mihai
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Cristian Costache
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Cristina Clisu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Cristina Nita
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Cristina Petrone
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Dan Filipescu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Dorel Bucurescu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Ed O'Sullivan
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Esra Yuksel
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Gabriel Turturica
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Gowhar Bhat
(Department of Higher Education (GDC Shopian), Jammu and Kashmir, 192 303, India)
Himanshu Singh
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Irina Dinescu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Irina Gheorghe
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
J.A. Sheikh
(Department of Physics, Islamic University of Science and Technology, Jammu and Kashmir, 192 122, India)
Kosuke Nomura
(Department of Physics, Hokkaido University, Sapporo 060-0810, Japan)
Lucian Stan
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Marian Boromiza
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Nazira Nazir
(Department of Physics, University of Kashmir, Hazratbal, Srinagar 190 006, India)
Nicolae Marginean
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Nicoleta Florea
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Patrick Regan
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Paul Stevenson
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Radu Mihai
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Raluca Marginean
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Razvan Lica
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Ruonan Mao
(School of Physical Science and Technology, Southwest University, Chongqing 400715, China)
Ruxandra Borcea
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Sebastian Toma
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Siddharth Doshi
(School of Architecture, Technology and Engineering, University of Brighton, Brighton, United Kingdom)
Sifa Poulton
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
Sorin Ujeniuc
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Stefana Calinescu
("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering, R-77125, Bucharest-Magurele, Romania)
Tabassum Naz
(Department of Physics, SP College, Cluster University Srinagar, 190001, India)
Z.P. Li
(School of Physical Science and Technology, Southwest University, Chongqing 400715, China)
Zsolt Podolyak
(School of Mathematics and Physics, University of Surrey, Guildford GU2 7XH, United Kingdom)
