Simulating the Interplanetary Radiation Environment For Ground Based Space Radiation Studies Using Targeted Energy Loss and Spallation From 56Fe Nuclei In Hydrogen-Rich Crystalline Materials
Abstract
Currently ground-based radiobiology experiments are conducted with beams of single ions with\nsingle energies, a method that does not fully describe the radiation risks from the complex mixed\nion field found in space. The health risks to humans during spaceflight would be better quantified if\nground-based mixed field irradiations are utilized in radiobiology experiments and space vehicle\nshielding studies. Here we demonstrate that it is possible to reproduce the Linear Energy Transfer\ndistribution in simulated tissue of the galactic cosmic ray spectrum expected during spaceflight.\nThis is done by determining which intrinsic properties of polymer and hydrogen-rich crystalline\nmaterials influence desired nuclear spallation and fragmentation when placed in an accelerated\nheavy-ion beam. Using these results, we have matched a target moderator block made of multiple\nlayers that generate the desired particle fragmentation and spallation products. The correct fluence\nof particles required for each layer (and thickness) will be determined using Monte Carlo methods.\nThis final moderator block is then placed in front of a 1000 MeV per nucleon Iron (56Fe) particle\nbeam, resulting in a complex mix of nuclei and energies similar to the galactic cosmic ray spectrum\nmeasured inside the Space Shuttle, International Space Station, and the Orion Exploration Vehicle.\nOur approach can be generalized to other radiation spectra and is therefore of wide applicability for\ngeneral…
Read the paper
Related studies
- Global, regional, and national burden of hepatitis B, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019
- A meta‐analysis of anal cancer incidence by risk group: Toward a unified anal cancer risk scale
- Global fertility in 204 countries and territories, 1950–2021, with forecasts to 2100: a comprehensive demographic analysis for the Global Burden of Disease Study 2021
- Exercise interventions in Alzheimer's disease: A systematic review and meta-analysis of randomized controlled trials
- Prognostic Significance of Carbonic Anhydrase IX Expression in Cancer Patients: A Meta-Analysis
- Glucocorticoid Resistance: Is It a Requisite for Increased Cytokine Production in Depression? A Systematic Review and Meta-Analysis
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.