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Why no beta-stable isotopes at N=19,21?

  1. Jul 12, 2005 #1
    Hello to all,

    I am new to this forum. I am webmaster for the Nucleon Cluster Model of the atomic nucleus of the late nuclear physicist Ronald Brightsen (MIT, 1950). You may view the site at this link: http://www.brightsenmodel.phoenixrising-web.net

    In his papers Mr. Brightsen asked the following question: Why are no beta-stable isotopes found at neutron numbers N = 19,21,35,39,45,61,71,89,112,123,147. Do any current "models" of nuclear physics provide an answer ? Thanks for any help you can provide.
  2. jcsd
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