| Autor: |
T.K. Rana, Deepak Pandit, S. Manna, Samir Kundu, K. Banerjee, A. Sen, R. Pandey, G. Mukherjee, T.K. Ghosh, S.S. Nayak, R. Shil, P. Karmakar, K. Atreya, K. Rani, D. Paul, R. Santra, A. Sultana, S. Basu, S. Pal, S. Sadhukhan, Debasish Mondal, S. Mukhopadhyay, Srijit Bhattacharya, Surajit Pal, P. Pant, Pratap Roy, Sk M. Ali, S. Mondal, A. De, Balaram Dey, R. Datta, S. Bhattacharya, C. Bhattacharya |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physics Letters B, Vol 859, Iss , Pp 139083- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/j.physletb.2024.139083 |
| Popis: |
The radiative decay of the Hoyle state serves as the gateway to the production of heavier elements in a stellar environment. Here, we present an exclusive measurement of electric quadruple (E2) transitions of the Hoyle state to the ground state of 12C through the 12C(p, p′γγ)12C reaction. A triple coincidence measurement yields the radiative branching ratio Γrad/Γ = 4.01 (30) × 10−4. This result was corroborated by an independent experiment based on the complete kinematical measurement via 12C(p, p′)12C reaction, yielding a consistent result of Γrad/Γ = 4.04 (30) × 10−4. Combining our results with the currently adopted values of Γπ(E0)/Γ and Γπ(E0), the radiative width of the Hoyle state is determined to be 3.75 (40) × 10−3 eV. It is important to note that our finding do not align with a recently reported 34% increase in the radiative decay width of the Hoyle state but is consistent with the currently accepted value. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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