Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts
We performed the first measurement of 30S+α resonant elastic scattering to experimentally examine the 30S(α, p) stellar reaction rate in type I x-ray bursts. These bursts are the most frequent thermonuclear explosions in the galaxy, resulting from thermonuclear runaway on the surface of accreting ne...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/201610904005 |
| _version_ | 1818912471109337088 |
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| author | Kahl D. Chen A. A. Kubono S. Yamaguchi H. Binh D. N. Chen J. Cherubini S. Duy N. N. Hashimoto T. Hayakawa S. Iwasa N. Jung H. S. Kato S. Kwon Y. K. Nishimura S. Ota S. Setoodehnia K. Teranishi T. Tokieda H. Yamada T. Yun C. C. Zhang L. Y. |
| author_facet | Kahl D. Chen A. A. Kubono S. Yamaguchi H. Binh D. N. Chen J. Cherubini S. Duy N. N. Hashimoto T. Hayakawa S. Iwasa N. Jung H. S. Kato S. Kwon Y. K. Nishimura S. Ota S. Setoodehnia K. Teranishi T. Tokieda H. Yamada T. Yun C. C. Zhang L. Y. |
| author_sort | Kahl D. |
| collection | DOAJ |
| description | We performed the first measurement of 30S+α resonant elastic scattering to experimentally examine the 30S(α, p) stellar reaction rate in type I x-ray bursts. These bursts are the most frequent thermonuclear explosions in the galaxy, resulting from thermonuclear runaway on the surface of accreting neutron star binaries. The 30S(α, p) reaction plays a critical role in burst models, yet very little is known about the compound nucleus 34Ar at these energies nor the reaction rate itself. We performed a measurement of alpha elastic scattering with a radioactive beam of 30S to experimentally probe the entrance channel. Utilizing a gaseous active target system and silicon detector array, we extracted the excitation function from 1.8 to 5.5 MeV near 160° in the center-of-mass frame. The experimental data were analyzed with an R-Matrix calculation, and we discovered several new resonances and extracted their quantum properties (resonance energy, width, spin, and parity). Finally, we calculated the narrow resonant thermonuclear reaction rate of 30S(α, p) for these new resonances. |
| first_indexed | 2024-12-19T23:15:07Z |
| format | Article |
| id | doaj.art-82faf943c9704b2297223bea529b6dfe |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T23:15:07Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-82faf943c9704b2297223bea529b6dfe2022-12-21T20:02:08ZengEDP SciencesEPJ Web of Conferences2100-014X2016-01-011090400510.1051/epjconf/201610904005epjconf_omeg2016_04005Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray burstsKahl D.0Chen A. A.1Kubono S.Yamaguchi H.2Binh D. N.3Chen J.4Cherubini S.5Duy N. N.6Hashimoto T.7Hayakawa S.8Iwasa N.9Jung H. S.10Kato S.11Kwon Y. K.12Nishimura S.13Ota S.14Setoodehnia K.15Teranishi T.16Tokieda H.17Yamada T.18Yun C. C.19Zhang L. Y.20Center for Nuclear Study, Graduate School of Science, the University of TokyoDepartment of Physics & Astronomy, McMaster UniversityCenter for Nuclear Study, Graduate School of Science, the University of TokyoCenter for Nuclear Study, Graduate School of Science, the University of TokyoDepartment of Physics & Astronomy, McMaster UniversityDepartment of Physics, University of Catania & INFNInstitute of PhysicsCenter for Nuclear Study, Graduate School of Science, the University of TokyoCenter for Nuclear Study, Graduate School of Science, the University of TokyoDepartment of Physics, Tohoku UniversityDepartment of Physics, Chung-Ang UniversityDepartment of Physics, Yamagata UniversityDepartment of Physics, Chung-Ang UniversityRIKEN Nishina Center, RIKEN (The Institute of Physical and Chemical Research)Center for Nuclear Study, Graduate School of Science, the University of TokyoDepartment of Physics & Astronomy, McMaster UniversityDepartment of Physics, Kyushu UniversityCenter for Nuclear Study, Graduate School of Science, the University of TokyoDepartment of Physics, Tohoku UniversityDepartment of Physics, Chung-Ang UniversityInstitute of Modern Physics, Chinese Academy of SciencesWe performed the first measurement of 30S+α resonant elastic scattering to experimentally examine the 30S(α, p) stellar reaction rate in type I x-ray bursts. These bursts are the most frequent thermonuclear explosions in the galaxy, resulting from thermonuclear runaway on the surface of accreting neutron star binaries. The 30S(α, p) reaction plays a critical role in burst models, yet very little is known about the compound nucleus 34Ar at these energies nor the reaction rate itself. We performed a measurement of alpha elastic scattering with a radioactive beam of 30S to experimentally probe the entrance channel. Utilizing a gaseous active target system and silicon detector array, we extracted the excitation function from 1.8 to 5.5 MeV near 160° in the center-of-mass frame. The experimental data were analyzed with an R-Matrix calculation, and we discovered several new resonances and extracted their quantum properties (resonance energy, width, spin, and parity). Finally, we calculated the narrow resonant thermonuclear reaction rate of 30S(α, p) for these new resonances.http://dx.doi.org/10.1051/epjconf/201610904005 |
| spellingShingle | Kahl D. Chen A. A. Kubono S. Yamaguchi H. Binh D. N. Chen J. Cherubini S. Duy N. N. Hashimoto T. Hayakawa S. Iwasa N. Jung H. S. Kato S. Kwon Y. K. Nishimura S. Ota S. Setoodehnia K. Teranishi T. Tokieda H. Yamada T. Yun C. C. Zhang L. Y. Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts EPJ Web of Conferences |
| title | Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts |
| title_full | Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts |
| title_fullStr | Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts |
| title_full_unstemmed | Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts |
| title_short | Experimental investigation of the 30S(α, p) thermonuclear reaction in x-ray bursts |
| title_sort | experimental investigation of the 30s α p thermonuclear reaction in x ray bursts |
| url | http://dx.doi.org/10.1051/epjconf/201610904005 |
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