Measuring neutrons in heavy ion collisions
The behavior of the symmetry energy above nuclear saturation density plays a significant role in the properties of neutron stars, the structure of heavy nuclei, and the dynamics of nuclear reactions. To improve constraints on the symmetry energy term in the Nuclear Equation of State (EOS), neutrons and charged-particles were measured with beams of 40,48Ca at 56,140 MeV/u on targets of 58,64Ni and 112,124Sn. The updated High Resolution Array (HiRA10) was used for charged-particle detection. A charged-particle veto wall was designed and constructed to eliminate charged-particle contamination in neutron spectrum measured with the Large Area Neutron Arrays (LANA). Several innovative methods were developed to improve LANA's calibration and neutron/gamma discrimination procedures. Neutron light output are compared to the simulation results from SCINFUL-QMD to test the validity of neutron measurements and calculate the neutron detection efficiency. Various analysis procedures needed for neutron measurements are demonstrated and a preview of the data to come is provided.
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- In Collections
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Electronic Theses & Dissertations
- Copyright Status
- In Copyright
- Material Type
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Theses
- Authors
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Zhu, Kuan
- Thesis Advisors
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Tsang, Betty
- Committee Members
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Danielewicz, Pawel
Dykman, Mark
Lynch, William G.
Hjorth-Jensen, Morten
- Date Published
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2020
- Subjects
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Physics
- Program of Study
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Physics - Doctor of Philosophy
- Degree Level
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Doctoral
- Language
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English
- Pages
- 164 pages
- ISBN
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9798691216909
- Permalink
- https://doi.org/doi:10.25335/9b3t-ch36