The α-decay of the Hoyle state in 12C: a new high- precision investigation (CROSBI ID 687800)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Dell‘Aquila, Daniele ; Lombardo, I. ; Verde, G. ; Vigilante, M. ; Acosta, L. ; Agodi, C. ; Cappuzzello, F. ; Carbone, D. ; Cavallaro, M. ; Cherubini, S. ; Cvetinovic, A. ; D‘Agata, G. ; Francalanza, L. ; Guardo, G.L. ; Gulino, M. ; Indelicato, I. ; La Cognata, M. ; Lamia, L. ; Ordine, A. ; Pizzone, R.G. ; Puglia, S.M.R. ; Rapisarda, G.G. ; Romano, S. ; Santagati, G. ; Spartà, R. ; Spadaccini, G. ; Spitaleri, C. ; Tumino, A.
engleski
The α-decay of the Hoyle state in 12C: a new high- precision investigation
The αdecay path of the Hoyle state in 12C (Ex = 7:654MeV) represents one ofthe most challenging questions of modern nuclear physics. Its knowledge can help in theunderstanding of cluster configurations in light nuclei and the possible existence of Bose-Einstein condensates in nuclei. In stars, it is involved in the so-called 3αprocess, wherethe 12C nucleosynthesis occurs. We studied the 14N(d ; α2)12C(7:654) reaction at 10:5MeVincident energy to probe its direct decay component. We found, with a precision higherof a factor 5 than any other previous experiment, an almost total absence of direct decaysby-passing the ground state of 8Be. From our analysis, a new upper limit of such decayis found at 0:043% (95% C.L.). Astrophysical 3α process reaction rate calculations haveto be accordingly revised.
Nuclear Structure ; Nuclear Clustering ; Light nuclei
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Podaci o prilogu
01005
2018.
objavljeno
10.1051/epjconf/201818401005
Podaci o matičnoj publikaciji
EPJ Web of Conferences, 184
2101-6275
2100-014X
Podaci o skupu
Nepoznat skup
predavanje
29.02.1904-29.02.2096
Povezanost rada
Fizika