EPJ Web of Conferences (Mar 2014)

Beta decay of exotic TZ = -1, -2 nuclei: the interesting case of 56Zn

  • Orrigo S.E.A.,
  • Rubio B.,
  • Fujita Y.,
  • Blank B.,
  • Gelletly W.,
  • Agramunt J.,
  • Algora A.,
  • Ascher P.,
  • Bilgier B.,
  • Cáceres L.,
  • Cakirli R. B.,
  • Fujita H.,
  • Ganioğlu E.,
  • Gerbaux M.,
  • Giovinazzo J.,
  • Grévy S.,
  • Kamalou O.,
  • Kozer H. C.,
  • Kucuk L.,
  • Kurtukian-Nieto T.,
  • Molina F.,
  • Popescu L.,
  • Rogers A. M.,
  • Susoy G.,
  • Stodel C.,
  • Suzuki T.,
  • Tamii A.,
  • Thomas J. C.

DOI
https://doi.org/10.1051/epjconf/20146602077
Journal volume & issue
Vol. 66
p. 02077

Abstract

Read online

The β decay properties of the Tz = -2, 56Zn isotope and other proton-rich nuclei in the fp-shell have been investigated in an experiment performed at GANIL. The ions were produced in fragmentation reactions and implanted in a double-sided silicon strip detector surrounded by Ge EXOGAM clovers. Preliminary results for 56Zn are presented .The 56Zn decay proceeds mainly by β delayed proton emission, but β delayed gamma rays were also detected. Moreover, the exotic β delayed gamma-proton decay was observed for the first time. The 56Zn half-life and the energy levels populated in the 56Cu daughter have been determined. Knowledge of the gamma de-excitation of the mirror states in 56Co and the comparison with the results of the mirror charge exchange process, the 56Fe(3He,t) reaction (where 56Fe has Tz = +2), were important in the interpretation of the 56Zn decay data. The absolute Fermi and Gamow-Teller strengths have been deduced.