6533b7d0fe1ef96bd125a342

RESEARCH PRODUCT

Search for forbidden?-decays of the drip line nucleus12Be

P. JensenF. PougheonRainer NeugartG. SchriederGunnar NymanO. SorlinMaría José García BorgeR. AnneThomas NilssonA.c. MuellerD. BazinS. DognyD. Guillemaud-muellerM. G. Saint-laurentP. HornshøjM. LewitowiczJ.m. CorreK. Wilhelmsen RolanderOlof TengbladR. BimbotF. HumbertH. KellerH. EmlingP. G. HansenBjörn Jonson

subject

PhysicsNuclear and High Energy PhysicsSpectrometer010308 nuclear & particles physicsBranching fraction[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciences3. Good healthIntensity (physics)Nuclear physicsIsospinExcited state0103 physical sciencesNuclear fusionHaloAtomic physics010306 general physicsLine (formation)

description

Beta-coincidentγ-rays have been measured from implanted pure samples of12Be separated at the LISE3 spectrometer at GANIL. An intensity of 0.040(26) % can be estimated for the branching ratio of the isospin forbidden pure-Fermi transition to the 0+ excited state of12B and of 0.008(6)% of the transition to the 1−1 excited state. Both are taken to represent upper limits. The half-life has been re-measured to be 26.1(2.4) ms.

https://doi.org/10.1007/bf01291655