Influence of Nuclear Structure on Decay Properties of Heavy Nuclei
(2017) Abstract (Swedish)
 This dissertation deals with the effects of nuclear structure on the αdecay properties, and on the fissionyield
distributions from the decay of heavy nuclei. The nuclearstructure and decay properties of superheavy
nuclei is one of the central topics for investigation. α decay is treated in a microscopic approach employing
SkyrmeHartreeFockBogoliubov wave functions to describe the formation of an α cluster in the unstable
nucleus. Fission is treated using the randomwalk approach, where the nuclear level density obtained from a
detailed model influences the dynamical evolution of the shape of the nucleus. The dissertation contains five
original research papers, and an introductory part containing background... (More)  This dissertation deals with the effects of nuclear structure on the αdecay properties, and on the fissionyield
distributions from the decay of heavy nuclei. The nuclearstructure and decay properties of superheavy
nuclei is one of the central topics for investigation. α decay is treated in a microscopic approach employing
SkyrmeHartreeFockBogoliubov wave functions to describe the formation of an α cluster in the unstable
nucleus. Fission is treated using the randomwalk approach, where the nuclear level density obtained from a
detailed model influences the dynamical evolution of the shape of the nucleus. The dissertation contains five
original research papers, and an introductory part containing background information and some additional
details of the studies.
Paper I contains an investigation of the αparticle formation amplitudes and decay rates obtained with
SkyrmeHartreeFockBogoliubov wave functions for eveneven nearspherical nuclei.
Paper II contains a study of some more aspects of the description in Paper I.
Paper III extends the application of the method in papers I and II to oddmass nearspherical nuclei.
Hindrance factors and the competition between αdecay paths to different excited states are investigated.
Paper IV deals with the theoretical description of lowlying states in superheavy nuclei observed in α
decay and spectroscopy measurements on element 115 decay chains.
Paper V contains results for fissionyield distributions obtained by combining the nuclear level densities
from a combinatorial model with the fivedimensional shape space randomwalk approach. The influence on the
yields from the structure of the microscopically calculated level densities is investigated.
(Less)  Abstract
 This dissertation deals with the effects of nuclear structure on the αdecay properties, and on the fissionyield
distributions from the decay of heavy nuclei. The nuclearstructure and decay properties of superheavy
nuclei is one of the central topics for investigation. α decay is treated in a microscopic approach employing
SkyrmeHartreeFockBogoliubov wave functions to describe the formation of an α cluster in the unstable
nucleus. Fission is treated using the randomwalk approach, where the nuclear level density obtained from a
detailed model influences the dynamical evolution of the shape of the nucleus. The dissertation contains five
original research papers, and an introductory part containing background... (More)  This dissertation deals with the effects of nuclear structure on the αdecay properties, and on the fissionyield
distributions from the decay of heavy nuclei. The nuclearstructure and decay properties of superheavy
nuclei is one of the central topics for investigation. α decay is treated in a microscopic approach employing
SkyrmeHartreeFockBogoliubov wave functions to describe the formation of an α cluster in the unstable
nucleus. Fission is treated using the randomwalk approach, where the nuclear level density obtained from a
detailed model influences the dynamical evolution of the shape of the nucleus. The dissertation contains five
original research papers, and an introductory part containing background information and some additional
details of the studies.
Paper I contains an investigation of the αparticle formation amplitudes and decay rates obtained with
SkyrmeHartreeFockBogoliubov wave functions for eveneven nearspherical nuclei.
Paper II contains a study of some more aspects of the description in Paper I.
Paper III extends the application of the method in papers I and II to oddmass nearspherical nuclei.
Hindrance factors and the competition between αdecay paths to different excited states are investigated.
Paper IV deals with the theoretical description of lowlying states in superheavy nuclei observed in α
decay and spectroscopy measurements on element 115 decay chains.
Paper V contains results for fissionyield distributions obtained by combining the nuclear level densities
from a combinatorial model with the fivedimensional shape space randomwalk approach. The influence on the
yields from the structure of the microscopically calculated level densities is investigated.
(Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/ae456b8533164c619ae0d51ec3825b46
 author
 Ward, Daniel ^{LU}
 supervisor

 Sven Åberg ^{LU}
 Gillis Carlsson ^{LU}
 opponent

 Professor Frauendorf, Stefan, University of Notre Dame, Notre Dame, Indiana, USA
 organization
 publishing date
 20170113
 type
 Thesis
 publication status
 published
 subject
 keywords
 alpha decay, hindrance factors, SkyrmeHartreeFockBogoliubov model, superheavy nuclei, fission yields, Brownianshape motion, nuclear structure, nuclear level density, alpha decay, hindrance factors, SkyrmeHartreeFockBogoliubov model, superheavy nuclei, fission yields, Brownianshape motion, nuclear structure, nuclear level density, Fysicumarkivet A:2017:Ward
 pages
 150 pages
 defense location
 Rydbergsalen, Fysicum, Sölvegatan 14A, Lund University, Faculty of Engineering.
 defense date
 20170113 13:15
 ISBN
 9789177531203
 9789177531210
 language
 English
 LU publication?
 yes
 id
 ae456b8533164c619ae0d51ec3825b46
 date added to LUP
 20161214 13:39:49
 date last changed
 20170915 12:45:37
@phdthesis{ae456b8533164c619ae0d51ec3825b46, abstract = {This dissertation deals with the effects of nuclear structure on the αdecay properties, and on the fissionyield<br/>distributions from the decay of heavy nuclei. The nuclearstructure and decay properties of superheavy<br/>nuclei is one of the central topics for investigation. α decay is treated in a microscopic approach employing<br/>SkyrmeHartreeFockBogoliubov wave functions to describe the formation of an α cluster in the unstable<br/>nucleus. Fission is treated using the randomwalk approach, where the nuclear level density obtained from a<br/>detailed model influences the dynamical evolution of the shape of the nucleus. The dissertation contains five<br/>original research papers, and an introductory part containing background information and some additional<br/>details of the studies.<br/>Paper I contains an investigation of the αparticle formation amplitudes and decay rates obtained with<br/>SkyrmeHartreeFockBogoliubov wave functions for eveneven nearspherical nuclei.<br/>Paper II contains a study of some more aspects of the description in Paper I.<br/>Paper III extends the application of the method in papers I and II to oddmass nearspherical nuclei.<br/>Hindrance factors and the competition between αdecay paths to different excited states are investigated.<br/>Paper IV deals with the theoretical description of lowlying states in superheavy nuclei observed in α<br/>decay and spectroscopy measurements on element 115 decay chains.<br/>Paper V contains results for fissionyield distributions obtained by combining the nuclear level densities<br/>from a combinatorial model with the fivedimensional shape space randomwalk approach. The influence on the<br/>yields from the structure of the microscopically calculated level densities is investigated.<br/>}, author = {Ward, Daniel}, isbn = {9789177531203}, keyword = {alpha decay,hindrance factors,SkyrmeHartreeFockBogoliubov model,superheavy nuclei,fission yields,Brownianshape motion,nuclear structure,nuclear level density,alpha decay,hindrance factors,SkyrmeHartreeFockBogoliubov model,superheavy nuclei,fission yields,Brownianshape motion,nuclear structure,nuclear level density,Fysicumarkivet A:2017:Ward}, language = {eng}, month = {01}, pages = {150}, school = {Lund University}, title = {Influence of Nuclear Structure on Decay Properties of Heavy Nuclei}, year = {2017}, }