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Gamma radiation from the alpha particle bombardment of C12


Larson, James Daniel (1965) Gamma radiation from the alpha particle bombardment of C12. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/PG1J-B583.


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The excitation function of the reaction C12([alpha], [gamma])016 has been studied over the region E[subscript alpha] = 2.8 to 8.3 MeV using a NaI(T1) detector and enriched C12 targets. Resonances were observed at E[subscript alpha] = 3.24, 3.58, 4.26, 5.81, 7.05, 7.88 and 8.13 MeV, corresponding to 016 states at E[subscript x]= 9.59, 9.85, 10.36, 11.52, 12.45, 13.07 and 13.26 MeV. Radiative widths [Gamma subscript gamma] for ground state radiation from the states at 9.59, 9.85, 11.52 and 12.45 MeV were measured to be 0.022 [plus or minus] 0.005, 0.0059 [plus or minus] 0.0006, 0.66 [plus or minus] 0.09 and 7 [plus or minus] 1 eV, respectively. Radiative widths for cascade radiation from the 9.85 and 10.36 MeV states through intermediate states of 016 were measured to be 0.0012 [plus or minus] 0.0004 and 0.046 [plus or minus] 0.006 eV, respectively. Interference effects in ground state radiation from the 13.07 MeV([...]) state support evidence for an underlying 2+ state at nearly the same energy. Other information on excited states of 016 is presented.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Fowler, William A. (advisor)
  • Spear, Raymond H. (co-advisor)
Thesis Committee:
  • Lauritsen, Thomas
  • Whaling, Ward
  • Barnes, Charles A.
  • Kavanagh, Ralph A.
Defense Date:14 May 1965
Record Number:CaltechETD:etd-09272002-140450
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3792
Deposited By: Imported from ETD-db
Deposited On:27 Sep 2002
Last Modified:20 Dec 2019 19:38

Thesis Files

PDF (Larson_j_1965.pdf) - Final Version
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