Study of proton resonances in 18Ne via resonant elastic scattering of 17F+p and its astrophysical implication
Abstract
The proton resonant properties in 18Ne, which determine the reaction rate of the key stellar 14O(α,p)17F reaction, have been studied by using a technique of proton resonant elastic scattering of 17F+p. A 4.22 MeV/nucleon 17F radioactive ion (RI) beam was produced via a projectile-fragmentation reaction, and separated by a Radioactive Ion Beam Line in Lanzhou (RIBLL). By bombarding a thick (CH2)n target, the energy spectra of the recoiled protons were measured by two ΔE-E silicon telescopes at the center-of-mass scattering angles of θc.m.≈175°±5°, θc.m.≈152°±8°, respectively. Several proton resonances in 18Ne were observed clearly. A further R-matrix analysis of the experimental data is under way to determine the resonant parameters. The present work reports the preliminary results briefly.
- Publication:
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Science China Physics, Mechanics, and Astronomy
- Pub Date:
- August 2011
- DOI:
- 10.1007/s11433-011-4407-9
- Bibcode:
- 2011SCPMA..54S..32H
- Keywords:
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- resonant reaction;
- reaction rate;
- explosive burning;
- accreting binary systems