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Measuring the 13C(α,n) Reaction in Inverse Kinematics: A Preliminary Investigation

Jones-Alberty, Yenuel S.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1575564709270728

Abstract Details

2019, Master of Science (MS), Ohio University, Physics and Astronomy (Arts and Sciences).
The slow neutron capture process (s-process) is a group of reactions that contribute to the production of heavy nuclides in stars. The neutron density of the s-process is sourced by various reactions, including the 13C(α,n)16O reaction. This reaction occurs at energies ranging from 140 to 230 keV. Like with most stellar reactions, this energy range is less than the Coulomb Barrier for the α on 13C reaction, which translates to a small reaction cross section and therefore is currently extremely difficult to determine experimentally. Because of this restriction, the reaction cross section must be constrained using cross section data of 13C(α,n) collisions at higher energies. A preliminary investigation of this reaction was realized, in which a carbon beam of energy range 13.16 ≤ Elab ≤ 20.16 MeV was incident on a 4He gas target. The resulting neutrons were measured at 0° through the time of flight method. Through inverse kinematics, the neutron differential cross section was determined at 0°, which corresponds to the extreme backward angle of 180° in regular kinematics. Future improvements to the experimental method are discussed, such as studying the reaction in regular kinematics using a thick carbon target. Furthermore, the effectiveness of utilizing the inverse kinematics method is evidenced, as well as the efficacy of using a gas cell to house a low pressure gas target.
Carl Brune (Advisor)
129 p.
Astrophysics; Nuclear Physics
carbon 13 alpha n; 13C; inverse kinematics; s-process; gas cell;

Recommended Citations

Citations

  • Jones-Alberty, Y. S. (2019). Measuring the 13C(α,n) Reaction in Inverse Kinematics: A Preliminary Investigation [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1575564709270728

    APA Style (7th edition)

  • Jones-Alberty, Yenuel. Measuring the 13C(α,n) Reaction in Inverse Kinematics: A Preliminary Investigation. 2019. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1575564709270728.

    MLA Style (8th edition)

  • Jones-Alberty, Yenuel. "Measuring the 13C(α,n) Reaction in Inverse Kinematics: A Preliminary Investigation." Master's thesis, Ohio University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1575564709270728

    Chicago Manual of Style (17th edition)

ohiou1575564709270728
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© 2019, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.