Elsevier

Nuclear Physics A

Volume 279, Issue 3, 4 April 1977, Pages 502-516
Nuclear Physics A

14N fusion with 13C and 16O at sub-barrier energies

https://doi.org/10.1016/0375-9474(77)90583-8Get rights and content

Abstract

Total fusion cross sections for the 14N+12C and 14N+16O reactions have been measured in the c.m. energy ranges 3.6–9.2 MeV and 5.6–12.6 MeV, respectively. Cross sections are also reported for important individual exit channels which were studied by observing discrete γ-ray transitions in the evaporation residues with a Ge(Li) detector. Excitation functions reveal no evidence of intermediate structure in these reactions. The fusion cross sections for 14N induced reactions on 12C, 14N and 16O are compared with an IWB calculation using recently published semi-empirical parameters for the real ion-ion interaction potential. Such a comparison supports the view that low-energy fusion studies may be sensitive probes of the nuclear potential in the interior of the interaction barrier.

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    In order to estimate the contribution of this reaction in the galaxy, its excitation function is needed. There is so far only one work to measure the total fusion cross section of the 16O + 14N by determining prompt γ-rays emitted in the reaction with a thick quartz disk as an oxygen-containing target [4]. Some interesting pieces of work have been carried out to measure cross sections with AMS technique for its high sensitivity for long-lived nuclides measurement e.g. [5,6].

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Supported in part by the National Science Foundation (PHY76-02724).

††

Present address: School of physics, University of Melbourne, Parkville 3052, Australia.

Operated by Union Carbide Corp. for the Energy Research and Development Administration.

‡‡

Present address: Franklin and Marshall College, Lancaster, Pennsylvania 17604,USA.

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