Edinburgh Research Archive logo

Edinburgh Research Archive

University of Edinburgh homecrest
View Item 
  •   ERA Home
  • Physics, School of
  • Physics thesis and dissertation collection
  • View Item
  •   ERA Home
  • Physics, School of
  • Physics thesis and dissertation collection
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

The Loosely ­Bound Proton in 13 N and the Transfer Reaction 11 B (13 N, 12 C) 12 C

View/Open
Neal RJ thesis 97.pdf (842.8Kb)
Neal RJ thesis 97.ps (7.471Mb)
Date
1997
Author
Neal, Richard J
Metadata
Show full item record
Abstract
The radioactive nucleus 13 N (t 1/2 = 10 min, J ß = 1/2) contains one loosely bound proton (Sp = 1.94 MeV) which can be considered to be bound to a core of 12 C. Taking advantage of the recent availability of beams of radioact­ive nuclei at Louvain-­la-­Neuve, Belgium, a beam of 13 N has been used to in­ vestigate the transfer reaction 11 B( 13 N, 12 C) 12 C. Particle­-γ coincidence data was taken, using the LEDA silicon strip array and BaF2 modules, gating on the 15.11 MeV γ-­decay from the T = 1 state in 12 C*. Two final states, corresponding to 12C gs + 12C* (15.11 MeV) and 12 C* (4.44 MeV)+ 12C* (15.11 MeV) have been ob­served and angular distributions have been measured for both transitions at each of two beam energies, 29.5 MeV and 45 MeV. The results are discussed with special reference to the loosely bound nature of the valence proton in 13 N; the transfer reaction has been modelled using a DWBA code, with the 13N ground state constructed as a mixture of states: a p 1/2 pro­ton bound to 12C gs , or a p 3/2 proton bound to 12 C* 2+ (4.44 MeV). Fits to the experimental data have been obtained using a very shallow set of optical poten­ tials, which are found to be energy dependent. The agreement with experiment is good, with the exception of the 12C* (4.44)+ 12 C*(15.11) transition at the lower beam energy, which is significantly under­estimated by the calculations, suggest­ ing a contribution from a different reaction mechanism.
URI
http://hdl.handle.net/1842/1783
Collections
  • Physics thesis and dissertation collection

Library & University Collections HomeUniversity of Edinburgh Information Services Home
Privacy & Cookies | Takedown Policy | Accessibility | Contact
Privacy & Cookies
Takedown Policy
Accessibility
Contact
feed RSS Feeds

RSS Feed not available for this page

 

 

All of ERACommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsPublication TypeSponsorSupervisorsThis CollectionBy Issue DateAuthorsTitlesSubjectsPublication TypeSponsorSupervisors
LoginRegister

Library & University Collections HomeUniversity of Edinburgh Information Services Home
Privacy & Cookies | Takedown Policy | Accessibility | Contact
Privacy & Cookies
Takedown Policy
Accessibility
Contact
feed RSS Feeds

RSS Feed not available for this page