The $\beta$-decay of $^{70}$Kr into $^{70}$Br: Restoration of the pseudo-SU(4) symmetry
- Vitéz-Sveiczer, A.
- Algora, A.
- Morales, A.I.
- Rubio, B.
- Kiss, G.G.
- Sarriguren, P.
- van Isacker, P.
- de Angelis, G.
- Recchia, F.
- Nishimura, S.
- Agramunt, J.
- Guadilla, V.
- Montaner-Pizá, A.
- Orrigo, S.E.A.
- Horváth, A.
- Napoli, D.
- Lenzi, S.
- Boso, A.
- Phong, V.H.
- Wu, J.
- Söderström, P.-A.
- Sumikama, T.
- Suzuki, H.
- Takeda, H.
- Ahn, D.S.
- Baba, H.
- Doornebal, P.
- Fukuda, N.
- Inabe, N.
- Isobe, T.
- Kubo, T.
- Kubono, S.
- Sakurai, H.
- Shimizu, Y.
- Sidong, C.
- Blank, B.
- Ascher, P.
- Gerbaux, M.
- Goigoux, T.
- Giovinazzo, J.
- Grévy, S.
- Kurtukián Nieto, T.
- Magron, C.
- Gelletly, W.
- Dombrádi, Zs.
- Fujita, Y.
- Tanaka, M.
- Aguilera, P.
- Molina, F.
- Eberth, J.
- Diel, F.
- Lubos, D.
- Borcea, C.
- Ganioglu, E.
- Nishimura, D.
- Oikawa, H.
- Takei, Y.
- Yagi, S.
- Korten, W.
- de France, G.
- Davies, P.
- Liu, J.
- Lee, J.
- Lokotko, T.
- Kojouharov, I.
- Kurz, N.
- Shaffner, H.
- Petrovici, A.
DOIAbstract
International audienceThe β-decay of the even-even nucleus 70Kr with Z=N+2, has been investigated at the Radioactive Ion Beam Factory (RIBF) of the RIKEN Nishina Center using the BigRIPS fragment separator, the ZeroDegree Spectrometer, the WAS3ABI implantation station and the EURICA HPGe cluster array. Fifteen γ-rays associated with the β-decay of 70Kr into 70Br have been identified for the first time, defining ten populated states below Eexc=3300 keV. The half-life of 70Kr was derived with increased precision and found to be t1/2=45.19±0.14 ms. The β-delayed proton emission probability has also been determined as εp=0.545(23)%. An increase in the β-strength to the yrast 1+ state in comparison with the heaviest Z=N+2 system studied so far (...
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