Skip to main content

LUP Student Papers

LUND UNIVERSITY LIBRARIES

Shell-model calculations in Ca-region

Cui, Weiyi LU (2018) FYSK02 20181
Mathematical Physics
Department of Physics
Abstract
In this project, the conguration interaction (CI) method is used to study the nuclear
spectra and the interactions between the nucleons in certain nuclei. The NuShellX@MSU
code based on the CI method is used to calculate and compare the energy levels of the
nuclei 42Ca, 42Ti, 42Sc, 48Cr on the basis of the J-scheme. The calculations test
the interactions denoted f742pn in the f7pn model space as well as fpmcc, fpmce in
the fp model space. The gx1acdpn interaction in the fppn model space is also applied
to add Coulomb interactions into the calculations and generate the mirror energy difference(MED). The MEDs are mainly calculated, using the NuShellX@MSU code, between
mirror nuclei 42Ti-42Ca and 48Mn-48V.
The results of the... (More)
In this project, the conguration interaction (CI) method is used to study the nuclear
spectra and the interactions between the nucleons in certain nuclei. The NuShellX@MSU
code based on the CI method is used to calculate and compare the energy levels of the
nuclei 42Ca, 42Ti, 42Sc, 48Cr on the basis of the J-scheme. The calculations test
the interactions denoted f742pn in the f7pn model space as well as fpmcc, fpmce in
the fp model space. The gx1acdpn interaction in the fppn model space is also applied
to add Coulomb interactions into the calculations and generate the mirror energy difference(MED). The MEDs are mainly calculated, using the NuShellX@MSU code, between
mirror nuclei 42Ti-42Ca and 48Mn-48V.
The results of the calculations show that the larger model space that includes more
orbits for nucleons gives spectra with more energy states at the price of longer computational time. The different interactions give differences in the nuclear energy levels at a few tens of keV. The rotational behaviour and the backbending phenomenon in the spectra of 48Cr are studied. Furthermore, the MEDs' spectra show the breaking of the isospin symmetry between the nucleons. Predictions on the energy levels of 48Fe and the MEDs between 48Fe-48Ti are also made for future experiments by the Lund nuclear structure
group. (Less)
Popular Abstract
Hi, traveler! Our mission today is to discover the internal world of nuclei. Here raises several questions: what are nuclei? what can we find in nuclei? how are particles arranged in nuclei? To answer these, we introduce the nuclear shell model. Still confused? Let's start our journey right now!
Please use this url to cite or link to this publication:
author
Cui, Weiyi LU
supervisor
organization
course
FYSK02 20181
year
type
M2 - Bachelor Degree
subject
keywords
shell model, configuration interaction, NuShellX, nuclear energy levels
language
English
id
8959110
date added to LUP
2018-09-28 14:55:03
date last changed
2018-09-28 14:55:03
@misc{8959110,
  abstract     = {{In this project, the conguration interaction (CI) method is used to study the nuclear
spectra and the interactions between the nucleons in certain nuclei. The NuShellX@MSU
code based on the CI method is used to calculate and compare the energy levels of the
nuclei 42Ca, 42Ti, 42Sc, 48Cr on the basis of the J-scheme. The calculations test
the interactions denoted f742pn in the f7pn model space as well as fpmcc, fpmce in
the fp model space. The gx1acdpn interaction in the fppn model space is also applied
to add Coulomb interactions into the calculations and generate the mirror energy difference(MED). The MEDs are mainly calculated, using the NuShellX@MSU code, between
mirror nuclei 42Ti-42Ca and 48Mn-48V.
The results of the calculations show that the larger model space that includes more
orbits for nucleons gives spectra with more energy states at the price of longer computational time. The different interactions give differences in the nuclear energy levels at a few tens of keV. The rotational behaviour and the backbending phenomenon in the spectra of 48Cr are studied. Furthermore, the MEDs' spectra show the breaking of the isospin symmetry between the nucleons. Predictions on the energy levels of 48Fe and the MEDs between 48Fe-48Ti are also made for future experiments by the Lund nuclear structure
group.}},
  author       = {{Cui, Weiyi}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Shell-model calculations in Ca-region}},
  year         = {{2018}},
}