Study of proton resonances in 18Ne via resonant elastic scattering of 17F + p and its astrophysical implication in the stellar reaction of 14O(α, p)17F
| العنوان: | Study of proton resonances in 18Ne via resonant elastic scattering of 17F + p and its astrophysical implication in the stellar reaction of 14O(α, p)17F |
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| المؤلفون: | Wan Lu, Yongji Yu, Xiangguo Lei, Z. G. Hu, Jiangping Hu, Xiqian Yu, Xiang Zhou, J. Su, Zhen Bai, J.J. He, Shao-Qiang Ye, Jin-Da Chen, Li Li, Y. H. Zhang, Wendong Tian, E. T. Li, Zhong-Yan Guo, Chengming Du, X. Yuan, Shi-Lun Jin, R.P. Ye, Peng Ma, Song-Song Xu, Linhao Zhang, Zhijia Sun, L. Liu, Xiang Yang Zhang, Y. Y. Yang, Shi-Tao Wang, Xiaodong Xu, Xuejun Li, Heng Xu, J. S. Wang, Y. D. Zang, Hao Wang, Jingyuan Ma, Chen Zhen, Xiaohong Zhang |
| المصدر: | The European Physical Journal A. 47 |
| بيانات النشر: | Springer Science and Business Media LLC, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Elastic scattering, Physics, Nuclear and High Energy Physics, Ion beam, Proton, Scattering, Hadron, Physics::Accelerator Physics, Nuclear fusion, Atomic physics, Nuclear Experiment, Nucleon, Spectral line |
| الوصف: | The stellar 14O (α, p) 17F reaction is thought to be one of the most important breakout reactions from the Hot CNO cycles into the rp-process in Type I X-ray bursters. In the present work, the properties of proton resonances in 18Ne have been investigated efficiently by utilizing a technique of proton resonant elastic scattering with a 17F radioactive-ion (RI) beam and a thick proton target. A 4.22 MeV/nucleon 17F RI beam, which was produced via a projectile-fragmentation reaction and experiencing a series of energy degradation, was separated by a Radioactive Ion Beam Line in Lanzhou (RIBLL) and bombarded a (CH2)n target. Energy spectra of the recoiled protons were measured by two sets of ΔE-E silicon telescope at center-of-mass scattering angles of θ c.m. ≈ 175° ± 5°, θ c.m. ≈ 152° ± 8°, respectively. Several proton resonances in 18Ne were observed, and their resonant parameters have been determined by an R-matrix analysis of the differential cross-sections. A doublet structure around 7.10 MeV has been identified and thought to be one state at 7.05 MeV (2+) and another one at 7.12 MeV (4+). The presently calculated total reaction rates of 14O (α, p) 17F are, at least, a factor of 1.2 ∼ 1.9 larger than the previous ones in a temperature region of 1.7 ∼ 3.0 GK mainly owing to the contribution from the 7.05 MeV (2+) state. This result implies that this breakout reaction may play a more important role than previously expected. |
| تدمد: | 1434-601X 1434-6001 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::03ca0d6d032566791658501f3ee86309 https://doi.org/10.1140/epja/i2011-11067-6 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........03ca0d6d032566791658501f3ee86309 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1434601X 14346001 |
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