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¹²C(α,γ)¹⁶O Reaction at Low Energies


Kremer, Richard M. (1987) ¹²C(α,γ)¹⁶O Reaction at Low Energies. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/95z5-9c26.


Absolute total cross-sections for ground state, 12C(α,γO)16O and cascade, 12C(α,γC)16O, transitions were measured over the energy range 1.29 MeV to 3.29 MeV. γ-rays were detected with four large NaI(T1) crystals in close geometry around a 4He gas target. Recoil 16O ions were separated from the intense 12C beam and detected by a multiwire proportional and gas ionization chambers in time-of-flight delayed coincidence with the γ-rays. The total cross-section at the peak of the Ecm = 2.4 MeV, Jπ = 1- resonance was found to be 42.6 ± 3.6 nb and the extrapolated S-factor at 300 keV was determined to be 40+40-34 keV-barns.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Barnes, Charles A.
Thesis Committee:
  • Barnes, Charles A. (chair)
Defense Date:26 May 1987
Record Number:CaltechTHESIS:08102010-092901686
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5987
Deposited On:10 Aug 2010 17:14
Last Modified:16 Apr 2021 23:22

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