# Direct observation of two protons in the decay of $^{54}$Zn

Abstract : The two protons emitted in the decay of 54Zn have been individually observed for the rst time in a Time Projection Chamber. The total decay energy and the half-life measured in this work agree with the results obtained in a previous experiment. Angular and energy correlations between the two protons are determined and compared to theoretical distributions of a three-body model. Within the shell model framework, the relative decay probabilities show a strong contribution of the p2 con guration for the two-proton emission. After 45Fe, the present result on 54Zn constitutes only the second case of a direct observation of the ground state two-proton decay of a long-lived isotope.
Document type :
Journal articles

Cited literature [8 references]

http://hal.in2p3.fr/in2p3-00617475
Contributor : Michel Lion <>
Submitted on : Monday, August 29, 2011 - 11:23:23 AM
Last modification on : Monday, November 30, 2020 - 11:04:04 AM
Long-term archiving on: : Wednesday, November 30, 2011 - 2:21:52 AM

### File

54Zn_TPC.pdf
Files produced by the author(s)

### Citation

P. Ascher, L. Audirac, N. Adimi, Bertram Blank, C. Borcea, et al.. Direct observation of two protons in the decay of $^{54}$Zn. Physical Review Letters, American Physical Society, 2011, 107, pp.102502. ⟨10.1103/PhysRevLett.107.102502⟩. ⟨in2p3-00617475⟩

Record views