First direct lifetime measurement of the 2(1)(+) state in Zn-72,Zn-74:New evidence for a shape transition between N=40 and N=42 close to Z=28
- Niikura, M.
- Mouginot, B.
- Franchoo, S.
- Matea, I.
- Stefan, I.
- Verney, D.
- Azaiez, F.
- Assie, M.
- Bednarczyk, P.
- Borcea, C.
- Burger, A.
- Burgunder, G.
- Buta, A.
- Caceres, L.
- Clement, E.
- Coquard, L.
- de Angelis, G.
- de France, G.
- Santos, F. de Oliveira
- Dewald, A.
- Dijon, A.
- Dombradi, Z.
- Fiori, E.
- Fransen, C.
- Friessner, G.
- Gaudefroy, L.
- Georgiev, G.
- Grevy, S.
- Hackstein, M.
- Harakeh, M. N.
- Ibrahim, F.
- Kamalou, O.
- Kmiecik, M.
- Lozeva, R.
- Maj, A.
- Mihai, C.
- Moeller, O.
- Myalski, S.
- Negoita, F.
- Pantelica, D.
- Perrot, L.
- Pissulla, Th.
- Rotaru, F.
- Rother, W.
- Scarpaci, J. A.
- Stodel, C.
- Thomas, J. C.
- Ujic, P.
DOIAbstract
We report here the first direct lifetime measurement of the 2(1)(+) state in Zn-72,Zn-74. The neutron-rich beam was produced by in-flight fragmentation of Ge-76 at the Grand Accelerateur National d'Ions Lourds and separated with the LISE spectrometer. The 2(1)(+) state was excited by inelastic scattering and knock-out reaction on a CD2 target and its lifetime was measured by the recoil-distance Doppler-shift method with the Koln plunger device combined with the EXOGAM detectors. The lifetimes of the 2(1)(+) states in Zn-72,Zn-74 were determined to be 17.9(18) and 27.0(24) ps, which correspond to reduced transition probabilities B(E2; 2(1)(+)-> 0(+)) = 385(39) and 370(33) e(2) fm(4), respectively. These values support the idea of a system...
Add to ORKG