Z dependence of the (γ, α) reaction yield

Reactions induced by photons may be used as a probe for bonds and correlations of nucleons inside a heavy target nucleus. In contrast to strongly interacting particles, electromagnetic radiation perturbs nucleons only slightly. The yield of ( γ , α ) reactions could be used to test theoretical model...

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Bibliographic Details
Published in:Physics of atomic nuclei 2014-11, Vol.77 (11), p.1429-1434
Main Author: Karamian, S. A.
Format: Article
Language:English
Subjects:
Analysis
Electromagnetism
Nuclei
Particle and Nuclear Physics
Physics
Physics and Astronomy
Radiation, Background
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Summary:Reactions induced by photons may be used as a probe for bonds and correlations of nucleons inside a heavy target nucleus. In contrast to strongly interacting particles, electromagnetic radiation perturbs nucleons only slightly. The yield of ( γ , α ) reactions could be used to test theoretical models that assume complete alpha-particle clustering or the presence of multiquark objects in heavy nuclei. The relative yields of ( γ , n ), ( γ , p ), and ( γ , α ) reactions were measured at the bremsstrahlung endpoint energy of 23 MeV for several targets. A much lower probability of ( γ , α ) in relation to ( γ , p ) reactions was proved despite very close threshold and spin factors for the two reaction types being considered. Therefore, alpha-particle clustering in heavy targets was not confirmed. The mechanism of particle release in nuclear reactions is discussed, and some details are clarified.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778814110040