Study of giant dipole resonance in hot rotating light mass nucleus 31P
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 multipliciti...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-09-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318305902 |
| _version_ | 1828814170521337856 |
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| author | Debasish Mondal Deepak Pandit S. Mukhopadhyay Surajit Pal Srijit Bhattacharya A. De N. Dinh Dang N. Quang Hung Soumik Bhattacharya S. Bhattacharyya Balaram Dey Pratap Roy K. Banerjee S.R. Banerjee |
| author_facet | Debasish Mondal Deepak Pandit S. Mukhopadhyay Surajit Pal Srijit Bhattacharya A. De N. Dinh Dang N. Quang Hung Soumik Bhattacharya S. Bhattacharyya Balaram Dey Pratap Roy K. Banerjee S.R. Banerjee |
| author_sort | Debasish Mondal |
| collection | DOAJ |
| description | 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. Keywords: Isovector giant dipole resonance, Statistical theory of nucleus, BaF2 detectors |
| first_indexed | 2024-12-12T10:17:27Z |
| format | Article |
| id | doaj.art-0a04dfa702d5492ab785718c385768bd |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-12T10:17:27Z |
| publishDate | 2018-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-0a04dfa702d5492ab785718c385768bd2022-12-22T00:27:37ZengElsevierPhysics Letters B0370-26932018-09-01784423428Study of giant dipole resonance in hot rotating light mass nucleus 31PDebasish Mondal0Deepak Pandit1S. Mukhopadhyay2Surajit Pal3Srijit Bhattacharya4A. De5N. Dinh Dang6N. Quang Hung7Soumik Bhattacharya8S. Bhattacharyya9Balaram Dey10Pratap Roy11K. Banerjee12S.R. Banerjee13Variable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, India; Corresponding author.Variable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, IndiaVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, IndiaVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, IndiaDepartment of Physics, Barasat Government College, Kolkata 700124, IndiaDepartment of Physics, Raniganj Girls' College, Raniganj 713358, IndiaQuantum Hadron Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako City, Saitama 351-0198, Japan; Institute of Nuclear Science and Technique, Hanoi 122100, VietnamInstitute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City 700000, VietnamVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, IndiaVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, IndiaSaha Institute of Nuclear Physics, 1/AF-Bidhannagar, Kolkata 700064, IndiaVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, IndiaVariable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India(Ex)Variable Energy Cyclotron Centre, 1/AF-Bidhannagar, Kolkata 700064, IndiaAn 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. Keywords: Isovector giant dipole resonance, Statistical theory of nucleus, BaF2 detectorshttp://www.sciencedirect.com/science/article/pii/S0370269318305902 |
| spellingShingle | Debasish Mondal Deepak Pandit S. Mukhopadhyay Surajit Pal Srijit Bhattacharya A. De N. Dinh Dang N. Quang Hung Soumik Bhattacharya S. Bhattacharyya Balaram Dey Pratap Roy K. Banerjee S.R. Banerjee Study of giant dipole resonance in hot rotating light mass nucleus 31P Physics Letters B |
| title | Study of giant dipole resonance in hot rotating light mass nucleus 31P |
| title_full | Study of giant dipole resonance in hot rotating light mass nucleus 31P |
| title_fullStr | Study of giant dipole resonance in hot rotating light mass nucleus 31P |
| title_full_unstemmed | Study of giant dipole resonance in hot rotating light mass nucleus 31P |
| title_short | Study of giant dipole resonance in hot rotating light mass nucleus 31P |
| title_sort | study of giant dipole resonance in hot rotating light mass nucleus 31p |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318305902 |
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