Speaker
Dr
Yutaka Watanabe
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Description
Multinucleon transfer (MNT) reaction between two heavy ions at energies around the Coulomb barrier is considered as a promising candidate to produce and investigate exotic nuclei. It is expected to provide a mean to efficiently produce especially neutron-rich nuclei around the neutron magic number of 126, which is difficult to access by other production methods.
The nuclear region of the neutron magic number N = 126 has been attracting an astrophysical interest because it is the waiting point nuclei on the r-process path, which are considered as progenitors of the peak at the mass number of 195 in the solar r-abundance distribution.
We have constructed the KEK Isotope Separation System (KISS) at RIKEN RIBF facility to produce, separate and measure the nuclear properties of those neutron-rich nuclei around the neutron magic number N = 126, which will be produced by the MNT reaction. KISS consists of an argon gas cell based laser ion source and an isotope separation on-line (ISOL), to produce pure low-energy beams of neutron-rich isotopes around N = 126 and to study their beta-decay properties.
We adopted the reaction system of 136Xe + 198Pt, which is considered to be one of the best candidates to efficiently produce the nuclei of interest. In order to investigate the feasibility of the nuclear production of the system, we have studied the collisions between 136Xe and 198Pt at the laboratory energy of 8 MeV/nucleon by using the EXOGAM gamma-ray array coupled to the large acceptance magnetic spectrometer VAMOS++ at GANIL.
In this presentation, we will show the experimental results of nuclear production by the 136Xe + 198Pt reaction system, where the promising potential of the production of new isotopes around and beyond the neutron shell N = 126 by MNT reactions were demonstrated. We will discuss about the production of those nuclei using MNT reactions at KISS.
Primary author
Dr
Yutaka Watanabe
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Co-authors
Mr
Ahmed Murad
(University of Tsukuba)
Dr
Christelle Schmitt
(GANIL)
Dr
Daisuke Suzuki
(IPN)
Dr
Daniele Montanari
(Padova University)
Dr
Emmanuel Clement
(GANIL)
Dr
Enrico Fioretto
(LNL)
Prof.
Gilles De France
(GANIL)
Prof.
Giovanni Pollarolo
(Torino University)
Prof.
Hiroari Miyatake
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Dr
Hiroki Nishibata
(Department of Physics, Osaka University)
Dr
Hironobu Ishiyama
(Institute for Basic Science)
Dr
Hyosoon Jung
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Dr
Jeong Seog Song
(Department of Physics and Astronomy, Seoul National University)
Dr
Jin Hyung Park
(Institute for Basic Science)
Mr
Jun Takatsu
(Department of Physics, Osaka University)
Dr
Jun Young Moon
(Institute for Basic Science)
Prof.
Lorenzo Corradi
(LNL)
Dr
Maurycy Rejmund
(GANIL)
Dr
Megumi Niikura
(IPN)
Prof.
Michiharu Wada
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Mr
Michihiro Oyaizu
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Ms
Momo Mukai
(University of Tsukuba)
Prof.
Navin Alahari
(GANIL)
Prof.
Nobuaki Imai
(Center of Nuclear Science, University of Tokyo)
Dr
Peter Schury
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))
Prof.
Seonho Choi
(Department of Physics and Astronomy, Seoul National University)
Sota Kimura
(University of Tsukuba)
Dr
Sun-chan Jeong
(Institute for Basic Science)
Dr
Yoshikazu HIRAYAMA
(High Energy Accelerator Research Organization (KEK))
Dr
Yung Hee Kim
(GANIL)
Mr
Yutaka Kakiguchi
(Wako Nuclear Science Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK))