Properties of the 12C 10 MeV state determined through β-decay
| Autor: | Ulli Köster, Sami Rinta-Antila, H. O. U. Fynbo, F.C. Barker, Olof Tengblad, Thomas Nilsson, Joakim Cederkäll, Henrik B. Jeppesen, K. Riisager, B. R. Fulton, Göran Hugo Nyman, K. Wilhelmsen, Juha Äystö, C. Aa. Diget, M. Turrión, María José García Borge, Mikael Meister, Valentin Fedosseev, L. M. Fraile, Yolanda Prezado, Björn Jonson |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Nuclear and High Energy Physics [PACS] β decay Deduced spin and parity of levels in C-12 double β decay electron and muon capture Parity (physics) Alpha particle Radioactivity Be-12(β-) B-12(β(-)3α) [produced in Ta(p X)] Inelastic scattering Beta decay Particle decay Measured α-particle coincidences R-matrix analysis 6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges] Double-sided Si strip detector Double beta decay [PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19 Atomic physics [PACS] Hydrostatic stellar nucleosynthesis Excitation Coincidence detection in neurobiology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0375-9474 |
| DOI: | 10.1016/j.nuclphysa.2005.05.159 |
| Popis: | 16 pages, 1 table, 10 figures.-- PACS nrs.: 23.40.-s; 26.20.+f; 27.20.+n.-- Printed version published Oct 3, 2005. The β-delayed triple-α particle decay of B-12 has been measured with a setup that favours coincidence detection. A broad state in C-12, previously reported around 10 MeV, has been seen and its properties determined through R-matrix analysis of the excitation spectrum. The spin and parity are 0(+). Interference between this state and the Hoyle state at 7.654 MeV has a marked influence on the spectrum. The coupling between the two states makes it difficult to determine the resonance energy. This work has been supported by the Spanish CICYT Agency under Project number FPA2002-04181-C04-02, by the EU-RI3 (Integrated Infrastructure Initiative) under Contract number 506065, and by the European Union Fifth Framework Programme "Improving Human Potential, Access to Research Infrastructure". |
| Databáze: | OpenAIRE |
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