Microscopic description of the beta delayed deuteron emission from \bbox{^6}He

Details Microscopic description of the beta delayed deuteron emission from \bbox{^6}He Microscopic description of the beta delayed deuteron emission from \bbox{^6}He

1993-09-22

arxiv.org/abs/nucl-th/9309024v1

Phys.Rev.C49:818-823,1994

Physics

Nuclear Physics

Nuclear Theory

LATEX with REVTEX, Submitted to Phys. Rev. C, 11 pages, 3 figures (not included) are available upon request. ATOMKI-93/5

Scientific paper

10.1103/PhysRevC.49.818

The beta delayed deuteron emission from $^6$He is studied in a dynamical microscopic cluster model. This model gives a reasonably good description for all the subsystems of $^6$He and $^6$Li in a coherent way, without any free parameter. The beta decay transition probability to the $^6$Li ground state is underestimated by a few percents. The theoretical beta delayed deuteron spectrum is close to experiment but it is also underestimated by about a factor 1.7. We argue that, in spite of their different magnitudes, both underestimations might have a common origin. The model confirms that the neutron halo part of the $^6$He wave function plays a crucial role in quenching the beta decay toward the $\alpha$ + d channel.

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