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Title: | On the β-decay of C-9 |
Authors: | Bergmann, U. C.; García Borge, María José CSIC ORCID; Boutami, Rafik CSIC; Fraile, Luis M. CSIC ORCID; Fynbo, H.O.U.; Hornshøj, P.; Jonson, B.; Markenroth, K.; Martel, Ismael CSIC ORCID; Mukha, I. CSIC ORCID; Nilsson, T.; Nyman, G.; Oberstedt, A.; Prezado, Yolanda CSIC ORCID; Riisager, K.; Simon, H.; Tengblad, Olof CSIC ORCID ; Wenander, F.; Wilhelmsen Rolander, K. | Keywords: | Radioactivity C-9(β(+)) [from O,Ca(p,X)] Measured β-delayed E-p E-α pαα-coin Angular correlations B-9 deduced β-branching strengths Decay mechanism features A=9 β-decay asymmetry Double-sided silicon strip detectors Mass-separated source Delayed proton Nuclear system Light-nuclei Shell-Model Drip-line Emission Asymmetry Continuum States Li-9 |
Issue Date: | 24-Sep-2001 | Publisher: | Elsevier | Series: | Nuclear Physics A 692(3-4): 427–450 (2001) | Abstract: | In β-decay experiments on C-9 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 B-9. A large β-strength asymmetry is deduced for the mirror transitions of C-9 and Li-9 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 Li-5 and Be-8. 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. | Description: | 24 pages, 9 figures.-- PACS nrs.: 23.40.Hc; 27.20.+n; 24.80.+y.-- Available online 17 August 2001. | Publisher version (URL): | http://dx.doi.org/10.1016/S0375-9474(01)00650-9 | URI: | http://hdl.handle.net/10261/9819 | DOI: | 10.1016/S0375-9474(01)00650-9 | ISSN: | 0375-9474 |
Appears in Collections: | (CFMAC-IEM) Artículos |
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