Space Radiation Interactions in Earth's Atmosphere, Low Earth Orbit, and Deep Space

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dc.contributor.advisorBayazitoglu, Yildizen_US
dc.creatorChanthavane, Spence Limen_US
dc.date.accessioned2021-12-06T19:56:06Zen_US
dc.date.available2021-12-06T19:56:06Zen_US
dc.date.created2021-12en_US
dc.date.issued2021-12-01en_US
dc.date.submittedDecember 2021en_US
dc.date.updated2021-12-06T19:56:07Zen_US
dc.description.abstractThis thesis explores various radiation transport toolkits to more accurately calculate pilot radiation exposure. Radiation exposure and its harmful effects on the human body are explored with the use of three simulation codes: DYASTIMA-R, MULASSIS, and HZETRN. Absorbed and equivalent dose values for seventeen different altitudes between 31,000 ft to 85,000 ft (9.5 km to 26 km) were simulated. Comparisons were made between HZETRN, which uses the deterministic method, and DYASTIMA-R and MULASSIS, which use the Monte Carlo method; all results were then compared to published data from ICRU Report 84. HZETRN and DYASTIMA-R output comparable results, with MULASSIS consistently outputting lower values. HZETRN results did not converge like DYASTIMA-R and MULASSIS results; this is probably due to the user-input source particle spectrum and the need to provide an extrapolated data set for HZETRN to base its simulations. HZETRN also neglected neutron particle influence on absorbed and equivalent dose which likely caused HZETRN dose values to undershoot. MULASSIS and HZETRN were further compared with previous studies in spacecraft shielding applications in deep-space and low Earth orbit environments. Results matched those of previous studies with MULASSIS underestimating dose values compared to HZETRN.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationChanthavane, Spence Lim. "Space Radiation Interactions in Earth's Atmosphere, Low Earth Orbit, and Deep Space." (2021) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/111754">https://hdl.handle.net/1911/111754</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/111754en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectRadiationen_US
dc.subjectspaceen_US
dc.subjectDYASTIMAen_US
dc.subjectDYASTIMA-Ren_US
dc.subjectMULASSISen_US
dc.subjectSPENVISen_US
dc.subjectGeant4en_US
dc.subjectHZETRNen_US
dc.subjectOLTARISen_US
dc.subjectdoseen_US
dc.subjectGCRen_US
dc.subjectaircraft altitudeen_US
dc.subjectMonte Carloen_US
dc.subjectDeterministicen_US
dc.subjectcomparisonen_US
dc.subjectdeep spaceen_US
dc.subjectLEOen_US
dc.subjectLow Earth Orbiten_US
dc.subjectICRPen_US
dc.subjectICRUen_US
dc.subjectcascadeen_US
dc.titleSpace Radiation Interactions in Earth's Atmosphere, Low Earth Orbit, and Deep Spaceen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentMechanical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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