Stringent upper limit on the direct 3α decay of the Hoyle state in C12
نویسندگان
چکیده
منابع مشابه
Improved limit on direct α decay of the Hoyle state.
The current evaluation of the triple-α reaction rate assumes that the α decay of the 7.65 MeV, 0+ state in 12C, commonly known as the Hoyle state, proceeds sequentially via the ground state of 8Be. This assumption is challenged by the recent identification of two direct α-decay branches with a combined branching ratio of 17(5)%. If correct, this would imply a corresponding reduction in the trip...
متن کاملNew Measurement of the Direct 3α Decay from the ^{12}C Hoyle State.
Excited states in certain atomic nuclei possess an unusual structure, where the dominant degrees of freedom are those of α clusters rather than individual nucleons. It has been proposed that the diffuse 3α system of the ^{12}C Hoyle state may behave like a Bose-Einstein condensate, where the α clusters maintain their bosonic identities. By measuring the decay of the Hoyle state into three α par...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2020
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.101.021302