| Autor: |
Mondal, Debasish, Pandit, Deepak, Mukhopadhyay, S., Pal, Surajit, Bhattacharya, Srijit, De, A., Dinh Dang, N., Quang Hung, N., Bhattacharya, Soumik, Bhattacharyya, S., Dey, Balaram, Roy, Pratap, Banerjee, K., Banerjee, S.R. |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Zdroj: |
Physics Letters |
| Popis: |
An exclusive systematic study of the giant dipole resonance (GDR) parameters has been performed in very light mass nucleus P31 in the temperature range of ∼0.8–2.1MeV and average angular momentum of ∼11–16ħ. The high-energy γ rays from the decay of the GDR, evaporated neutrons and γ-ray multiplicities have been measured. The angular distribution of high-energy γ rays has also been measured at Ebeam=42MeV. The GDR parameters, nuclear level density parameter and nuclear temperature were precisely determined by simultaneous statistical model analysis of high-energy γ ray and evaporated neutron spectra. It is observed that the measured width remains roughly constant up to a temperature of ∼1.6MeV. Moreover, the thermal pairing plays no role in describing the GDR width in this open-shell light nucleus at the above-mentioned temperatures and angular momenta. The present measurements provide an excellent platform to extend the applicability of the existing theoretical models down to the very light mass nuclei. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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