• Login
    View Item 
    •   Repository Home
    • Research Papers
    • School of Pure and Applied Sciences
    • Department of Physical Sciences
    • View Item
    •   Repository Home
    • Research Papers
    • School of Pure and Applied Sciences
    • Department of Physical Sciences
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Investigation of photoneutron and capture gamma-ray production in Pb and W under irradiation from 16N decay radiation

    Thumbnail
    View/Open
    Investigation of photoneutron and capture gamma-ray.pdf (15.54Kb)
    Date
    2015-09
    Author
    Kebwaro, Jeremiah Monari
    Zhao, Yaolin
    He, Chaohui
    Metadata
    Show full item record
    Abstract
    Lead and tungsten are potential alternative materials for shielding reactor ex-core components with high 16N activity when available space limits application of concrete. Since the two materials are vulnerable to photonuclear reactions, the nature and intensity of the secondary radiation resulting from (γ,n) and (n,γ) reactions when 16N decay radiation interact with these materials need to be well known for effective shielding design. In this study the MCNP code was used to calculate the photoneutron and capture gamma-ray spectra in the two materials when irradiated by 16N decay radiation. It was observed that some of the photoneutrons generated in the two materials lie in the low-energy range which is considered optimum for (n,γ) reactions. Lead is more transparent to the photoneutrons when compared to tungsten. The calculations also revealed that the bremsstrahlung generated by the beta spectrum was not sufficient to trigger any additional photoneutrons. Both energetic and less energetic capture gamma-rays are observed when photoneutrons interact with nuclei of the two materials. Depending on the strength of the 16N source term, the secondary radiation could affect the effectiveness of the shield and need to be considered during design.
    URI
    http://karuspace.karu.ac.ke/handle/20.500.12092/1967
    Collections
    • Department of Physical Sciences [24]

    Karatina University copyright © 2017-2019  | Powered by DSpace
    Contact Us | Send Feedback | OAI-PMH Compliant
    Theme by Systems Librarian
      

     

    Browse

    All of RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Karatina University copyright © 2017-2019  | Powered by DSpace
    Contact Us | Send Feedback | OAI-PMH Compliant
    Theme by Systems Librarian