First observation of 54Zn and its decay by two-proton emission.
作者： B. Blank , A. Bey , G. Canchel , C. Dossat , A. Fleury
DOI: 10.1103/PHYSREVLETT.94.232501
关键词: Nuclear physics 、 Correlation method 、 Proton emission 、 Radioactive decay 、 Elementary particle 、 Atomic physics 、 Decay energy 、 Nucleon 、 Spectral line 、 Nucleus 、 Physics
摘要: The nucleus 54Zn has been observed for the first time in an experiment at SISSI/LISE3 facility of GANIL quasifragmentation a 58Ni beam 74.5 MeV/nucleon (nat)Ni target. fragments were analyzed by means ALPHA-LISE3 separator and implanted silicon-strip detector where correlations space between implantation subsequent decay events allowed us to generate almost background free spectra about 25 different nuclei same time. Eight observed. From correlated events, half-life is determined be 3.2(+1.8)(-0.8) ms. Seven eight implantations are followed two-proton emission with energy 1.48(2) MeV. partial compared model predictions allow test these models.
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