Clarification of the three-body decay of 12C (12.71 MeV)

H O U Fynbo, Y Prezado, U C Bergmann, M J G Borge, P Dendooven, W X Huang, J Huikari, H Jeppesen, P Jones, B Jonson, M Meister, G Nyman, K Riisager, O Tengblad, I S Vogelius, Y Wang, L Weissman, K Wilhelmsen Rolander, J Aystö

Abstract

Using beta decays of a clean source of 12N produced at the IGISOL facility, we have measured the breakup of the 12C (12.71 MeV) state into three alpha particles with a segmented particle detector setup. The high quality of the data permits solving the question of the breakup mechanism of the 12.71 MeV state, a longstanding problem in few-body nuclear physics. Among existing models, a modified sequential model fits the data best, but systematic deviations indicate that a three-body description is needed.

OriginalsprogEngelsk
TidsskriftPhysical Review Letters
Vol/bind91
Udgave nummer8
Sider (fra-til)082502
ISSN0031-9007
DOI
StatusUdgivet - 22 aug. 2003
Udgivet eksterntJa

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