6533b85bfe1ef96bd12bb245
RESEARCH PRODUCT
High-sensitivity study of levels in 30Al following β decay of 30Mg
B. OlaizolaH. MachL. M. FraileJ. BenitoM. J. G. BorgeR. BoutamiP. A. ButlerZ. DlouhyH. O. U. FynboP. HoffS. HyldegaardH. B. JeppesenAri JokinenC. JolletA. KorgulU. KösterTh. KröllW. KurcewiczF. MarechalJ. MrazekT. NilssonW. A. PłóciennikE. RuchowskaR. SchuberW. SchwerdtfegerM. SewtzG. S. SimpsonM. StanoiuO. TengbladP. G. ThirolfD. T. Yordanovsubject
neutron-rich nucleibeta decayalumiinimagnesiumexcited statesdescription
γ -ray and fast-timing spectroscopy were used to study levels in 30Al populated following the β− decay of 30Mg. Five new transitions and three new levels were located in 30Al. A search was made to identify the third 1+ state expected at an excitation energy of ∼2.5 MeV. Two new levels were found, at 3163.9 and 3362.5 keV, that are firm candidates for this state. Using the advanced time-delayed (ATD) βγγ (t) method we have measured the lifetime of the 243.8-keV state to be T1/2 = 15(4) ps, which implies that the 243.8-keV transition is mainly of M1 character. Its fast B(M1; 2+ → 3+) value of 0.10(3) W.u. is in very good agreement with the USD shell-model prediction of 0.090 W.u. The 1801.5-keV level is the only level observed in this study that could be a candidate for the second excited 2+ state. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 | Physical Review C |