• Login
    View Item 
    •   Home
    • Theses & Dissertations
    • 2019 - Mines Theses & Dissertations
    • View Item
    •   Home
    • Theses & Dissertations
    • 2019 - Mines Theses & Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Mines RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    Login

    Mines Links

    Arthur Lakes LibraryColorado School of Mines

    Statistics

    Display Statistics

    Investigating halo features in ¹⁰Be with the ¹¹Be(p,d)¹⁰Be* transfer reaction at 110 MeV at TRIUMF-ISAC II

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Kuhn_mines_0052E_11681.pdf
    Size:
    10.83Mb
    Format:
    PDF
    Download
    Author
    Kuhn, Keri M.
    Advisor
    Sarazin, Frederic
    Date issued
    2019
    
    Metadata
    Show full item record
    URI
    https://hdl.handle.net/11124/172889
    Abstract
    One-neutron transfer reactions are used to study single-particle neutron states in nuclei. In this work, the 11Be(p,d)10Be* transfer reaction at 9.93 MeV/nucleon was performed at the TRIUMF-ISAC II facility with the Printed Circuit Board Based Charged Particle ((PCB)2) array inside the TRIUMF ISAC Gamma- Ray Escape-Suppressed Spectrometer (TIGRESS). Using particle identification and particle-γ coincidence the extraction of angular distributions was performed for the ground state and all the populated excited states of 10Be (2+1 , 2+2 , 1− and 2−). A collective state model was used in an attempt to fit the angular distributions for the 0+1 and 2+1 states by deforming a 10Be potential with a quadrupole coupling in DWBA calculations run by FRESCO. This model correctly predicted the magnitude of the angular distribution for the 0+1 state, but did not successfully reproduce the angular distribution for the 2+1 state. The other 10Be states were modeled as a single-particle hole states using either a one- or two-step process to create the hole state by removing a p3/2 neutron from the initial configuration of the 11Be nucleus. To extract the spectroscopic factors for the hole states, a χ2 analysis was performed to find the best fit to the experimental data. After the spectroscopic factors were extracted they were compared to theoretical predictions and previous experimental values. The spectroscopic factors of the 1− and 2− single-particle hole states starting from a pure s1/2 state were found to be lower than previous studies, however, it was also determined in this analysis that a d5/2 component of the wavefunction could be significant in some cases. The spectroscopic factor of the single-particle hole state for the 2+2 state was found to be extremely large to reproduce the magnitude of the cross-section. Further studies are needed to resolve the structure of the 2+2 state. The 2− state remains the best candidate for an excited halo state structure, though the s1/2 spectroscopic factor is much lower than predicted. An experiment to extend the angular distributions beyond what was measured in this experiment could provide more sensitivity to the s1/2 and d5/2 components and perhaps clarify the s1/2 and d5/2 makeup of the 1− and 2− states.
    Rights
    Copyright of the original work is retained by the author.
    Collections
    2019 - Mines Theses & Dissertations

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.