Browse

The Study of Multi-nucleon Transfer Reaction of 136Xe + 198Pt Above the Coulomb Barrier
쿨롱 장벽 위에서 136Xe + 198Pt의 다중 핵 전달 반응의 연구

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors
Kim Yung Hee
Advisor
최선호
Issue Date
2015-08
Publisher
서울대학교 대학원
Keywords
Multi-nucleon transfer reaction, reaction between heavy ions, reaction
Description
학위논문(박사)--서울대학교 대학원 :자연과학대학 물리·천문학부,2015. 8. 최선호.
Abstract
The neutron-rich isotopes far from stability, around the mass number A~200 forms the last waiting point of the r-process towards the synthesis of uranium.
But, the difficulty of producing such nuclei with conventional methods, limited the current knowledge of such nuclides (e.g. half-life, mass, etc.) to the region close to the valley of stability.
The multi-nucleon transfer (MNT) reaction recently attracts much attentions as the candidate to produce nuclides in this neutron-rich region.
The MNT reactions with the combination of heavy neutron-rich projectile, such as 136Xe with target nucleus (e.g. 208Pb or 198Pt) is anticipated to have large cross sections for the producing neutron-rich target-like fragments (TLF's) [9, 14, 26]. However, the MNT reactions in such heavy systems have not been studied well.
We performed an experiment using 136Xe+198Pt system with the beam energy 8MeV/u ( 55% above the Coulomb barrier).
The large acceptance VAMOS++ spectrometer [83] and the EXOGAM Ge-detector array [96] at GANIL were used.
First, to investigate the feasibility of the MNT reaction for producing neutron rich exotic nuclei.
Second, to study reaction mechanism between heavy neutron-rich beam, and target with similar N/Z ratio.
The event-by-event particle identification of projectile-like fragments (PLF's)were successfully carried out [119].
The cross sections of PLF, and TLF (calculated from information of PLF) will be presented, comparison with the GRAZING code [20] and TDHF [35] calculation.
The evolution of reaction concerning nucleon transfer by moment analysis of correlation between mass and atomic number distribution(e.g. mean, width, and correlation of atomic number/mass distribution) will be discussed.
This experimental result confirmed the MNT reaction between 136Xe+198Pt above the Coulomb barrier can produce neutron rich nuclides with N = 126 magic
number for the first time.
And observed neutron rich nuclides are produced from reaction with low excitation energy before N/Z-equilibrium is reached.
This result will offer new possiblity to explore astronomically and nuclear physically
important new territory of nuclear chart.
And encourage new facilities that use MNT reactions for producing new isotope beam.
Language
eng
URI
http://dcollection.snu.ac.kr:80/jsp/common/DcLoOrgPer.jsp?sItemId=000000066978
Files in This Item:
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Physics and Astronomy (물리·천문학부)Physics (물리학전공)Theses (Ph.D. / Sc.D._물리학전공)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse