CERN Accelerating science

Article
Title On the β-decay of 9C
Author(s) ISOLDE Collaboration  Show all 19 authors
Affiliation (CERN)
Publication 2001
Imprint 2001
In: Nucl. Phys. A 692 (2001) 427-50
DOI 10.1016/S0375-9474(01)00650-9
Subject category Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN ISOLDE ; IS361
Abstract In β-decay experiments on 9C at CERN/ISOLDE the β-strength was determined to the ground state, the 12.2 MeV excited state and the isobaric analog state (IAS) at 14.655 MeV in 9B. A large β-strength asymmetry is deduced for the mirror transitions of 9C and 9Li to states around 12 MeV excitation energy. A satisfactory description of the three-body decay from a narrow energy region around the 12.2 MeV resonance is obtained within a sequential model involving the ground and first-excited states of 5Li and 8Be. From the study of angular correlations the spin of the 12.2 MeV state is determined as 5/2. For the first time the population of the IAS is observed in β-decay and new information on the decay of this state is obtained. The advantages of a closely packed, highly segmented detector setup are demonstrated. (30 refs).

Corresponding record in: Inspire


 Record created 2002-03-22, last modified 2015-01-16



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