Task Quantum Multiple Scattering Model of Heavy Ion Fragmentation (QMSFRG) (Completed)
Last Published:  11/23/20 11:55:12 AM (Central)
Short Title: QMSFRG
Responsible HRP Element: Space Radiation
Collaborating Org(s):
Funding Status: Completed - Task completed and produced a deliverable
Procurement Mechanism(s):
Directed
Aims:
Task in support of the Measurements and Transport Phase 2 Physics Project (ID No. 356). Improvements to the nuclear model QMSFRG with the following specific aims:
  1. To develop Computer Subroutines from the QMSFRG model that will generate require cross section data for application within the HZETRN code in collaboration with NASA LaRC. A 190-ion grid for 9 projectile energies on arbitrary target materials (Hydrogen to Lead) applicable GCR shielding problems will be generated with appropriate interpolation schemes for other materials and energies. Furthermore, to prepare a data base generator for Monte- Carlo transport code applications and tested in the Geant4.
  2. To report on the extension of the light ion production cross sections in the QMSFRG model for nuclear coalescence formation of light particles (d, t, h, a), and the resulting losses to n and p production (Dr. F.A. Cucinotta, Lead). Also, data bases of light-particle production multiplicities will be generated. Comparisons to experimental data will be reported.
  3. To improve the model energy density formalisms used in the nuclear de-excitation process in QMSFRG Master decay-solutions. Cross-comparisons of different models and to experimental data will be reported.
  4. To implement the JSC Selected Core formalism for the description of pre-fragment excitation functions in nuclear abrasion for selected GCR nuclei (12C, 16O, 20Ne, and 28Si) and to extend the formalism for alpha-clusters. Energy levels and nuclear transition densities, and fragmentation cross section calculations will be compared to experimental data.
Outcome supports Phase 2 Physics and Risk Assessment Project efforts to improve models and transport to reduce uncertainty of light ion and neutron production and transport through spacecraft materials and secondary environments on the lunar and Mars surface.
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Mappings
RiskRisk of Acute (In-flight) and Late Central Nervous System Effects from Radiation Exposure
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RiskRisk of Acute Radiation Syndromes Due to Solar Particle Events (SPEs)
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RiskRisk of Cardiovascular Disease and Other Degenerative Tissue Effects From Radiation Exposure and Secondary Spaceflight Stressors
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RiskRisk of Radiation Carcinogenesis
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