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Spectroscopic factors near the r-process path using combined measurements

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TitleInfo
Title
Spectroscopic factors near the r-process path using combined measurements
SubTitle
⁸⁶Kr(d,p)⁸⁷Kr and ⁸⁴Se(d,p)⁸⁵Se
Name (type = personal)
NamePart (type = family)
Walter
NamePart (type = given)
David
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David Walter
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Cizewski
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Jolie
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Jolie Cizewski
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Advisory Committee
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chair
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Salur
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Sevil
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Sevil Salur
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Advisory Committee
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internal member
Name (type = personal)
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Chou
NamePart (type = given)
John Paul
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John Paul Chou
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Advisory Committee
Role
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internal member
Name (type = personal)
NamePart (type = family)
Kloet
NamePart (type = given)
Wim
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Wim Kloet
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Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Pain
NamePart (type = given)
Steve
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Steve Pain
Affiliation
Advisory Committee
Role
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outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
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NamePart
School of Graduate Studies
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school
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Text
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theses
OriginInfo
DateCreated (qualifier = exact)
2018
DateOther (qualifier = exact); (type = degree)
2018-10
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2018
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Modern nuclear structure models suggest that the shell structure near the valley of stability, with well-established shell closures at N=50, for example, changes in very neutron-rich nuclei far from stability. Single-particle properties of nuclei away from stability can be probed in single-neutron (d,p) transfer reactions with beams of rare isotopes. The interpretation of these data requires reaction theories with various effective interactions. Often, approximations made to the final neutron bound-state introduce a large uncertainty in the extracted spectroscopic factor. To mitigate this uncertainty, Mukhamedzhanov and Nunes have proposed a combined, two-measurement method, where the external contribution of this bound-state wave function is fixed using a peripheral reaction, and is combined with a higher energy measurement with a larger contribution from the nuclear interior. By constraining the asymptotic behavior, the method enables spectroscopic factors to be deduced with uncertainties dominated by experimental statistics rather than the bound-state potential.

The (d,p) neutron transfer reaction with 35 MeV/u beams of <sup>86</sup>Kr has been measured at the National Superconducting Cyclotron Laboratory (NSCL) to test this method. The reaction protons were detected with the Oak Ridge Rutgers University Barrel Array (ORRUBA) and Silicon Detector Array (SIDAR), arrays of segmented silicon strip detectors, the first implementation of such a configuration with fast beams at the NSCL. These measurements at 35 MeV/u were combined with previous studies of the <sup>86</sup>Kr(d,p) reaction at 5.5 MeV/u to test the combined method. The bound-state potential for the ground state of <sup>87</sup>Kr was successfully constrained by extracting an asymptotic normalization coefficient (ANC) consistent with both the high- and low-energy measurements, which provides a corresponding constrained spectroscopic factor of S=0.44+0.09-0.13 for the ground state of <sup>87</sup>Kr.

Although a constrained bound-state potential for other low-lying states was not achieved, the successful results for the ground state prompted a study of the d(<sup>84</sup>Se,p)<sup>85</sup>Se reaction. The low-energy ANC analysis based on previously published results is presented in this work as well as preliminary results from the higher energy measurement using radioactive ion beams of <sup>84</sup>Se at 45 MeV/u at the NSCL.
Subject (authority = RUETD)
Topic
Physics and Astronomy
Subject (authority = local)
Topic
Spectroscopic factors
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Identifier
ETD_9186
Identifier (type = doi)
doi:10.7282/t3-j8n7-fw90
PhysicalDescription
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electronic resource
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application/pdf
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text/xml
Extent
1 online resource (119 pages : illustrations)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by David Walter
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Genre (authority = ExL-Esploro)
ETD doctoral
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RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Walter
GivenName
David
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2018-09-12 10:24:01
AssociatedEntity
Name
David Walter
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
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Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
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Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical

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2018-09-18T18:26:57
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