Electromagnetic transition from the 4+ to 2+ resonance in 8Be measured via the radiative capture in 4He + 4He.
Phys Rev Lett
; 111(6): 062502, 2013 Aug 09.
Article
em En
| MEDLINE
| ID: mdl-23971569
ABSTRACT
An earlier measurement on the 4+ to 2+ radiative transition in 8Be provided the first electromagnetic signature of its dumbbell-like shape. However, the large uncertainty in the measured cross section does not allow a stringent test of nuclear structure models. This Letter reports a more elaborate and precise measurement for this transition, via the radiative capture in the 4He + 4He reaction, improving the accuracy by about a factor of 3. Ab initio calculations of the radiative transition strength with improved three-nucleon forces are also presented. The experimental results are compared with the predictions of the alpha cluster model and ab initio calculations.
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MEDLINE
Tipo de estudo:
Prognostic_studies
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En
Ano de publicação:
2013
Tipo de documento:
Article