Fusion Reaction Cross-section Measurements near ¹⁰⁰Sn

Author

Elton Lewis Freeman, University of Tennessee, Knoxville

Date of Award

8-2008

Degree Type

Thesis

Degree Name

Master of Science

Major

Physics

Major Professor

Robert Grzywacz

Committee Members

Carol Bingham, Lawrence Townsend

Abstract

This thesis describes the measurement of production rates of A=109 isobars produced with beams of ⁵⁴Fe ions accelerated to 207 MeV bombarding ⁵⁸Ni target. The reaction products have been electromagnetically separated according to their mass over charge ratio and implanted into a semiconductor detector. The spontaneous decay radiation from the implanted radioactive isobars has been measured in a detection system with known detection efficiency, enabling to determine absolute intensities of observed isotopes. Known branching ratios of alpha decays of ¹⁰⁹Xe, ¹⁰⁹Te, proton decay of ¹⁰⁹I and beta delayed gamma radiation of ¹⁰⁹Te and ¹⁰⁹Sb have been used to determine the production rates of these isotopes. The experimental data has been compared to predictions given by the fusion-evaporation code HIVAP. The experiment was performed at Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory using the 25 MV Tandem Accelerator and Recoil Mass Spectrometer. This work can be used in planning of future experiments on exotic isotopes near ¹⁰⁰Sn. Results for the production of ¹⁰⁹Sb were found to agree fairly well with HIVAP prediction, but should only be used as a guide for future experiments.

Recommended Citation

Freeman, Elton Lewis, "Fusion Reaction Cross-section Measurements near ¹⁰⁰Sn. " Master's Thesis, University of Tennessee, 2008.
https://trace.tennessee.edu/utk_gradthes/3636