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Shielding and fragmentation studies
C Zeitlin1, S Guetersloh, L Heilbronn
1Lawrence Berkeley National Laboratory, MS74-197, Berkeley, CA 94720, USA. cjzeitlin@lbl.gov
Radiation Protection Dosimetry
|April 11, 2006
Summary
Researchers measured heavy-ion interactions in materials relevant to space radiation dosimetry. This data improves models for predicting radiation exposure and testing shielding materials for future space missions.
Area of Science:
- Nuclear Physics
- Space Science
- Radiation Protection
Background:
- Accurate radiation dosimetry is crucial for manned space missions.
- High-energy ion transport through materials is complex and requires reliable experimental data for transport models.
Purpose of the Study:
- To expand the heavy ion database for space radiation transport models.
- To measure charge-changing and fragment production cross sections for various target materials.
- To assess the effectiveness of proposed shielding materials.
Main Methods:
- Experimental measurement of heavy-ion interactions.
- Utilizing various elemental targets, including materials relevant to space missions and radiation dosimetry.
- Measuring fragment production cross sections to evaluate shielding materials.
Main Results:
- Generated experimental data on heavy-ion interactions in materials like carbon, aluminum, hydrogen, nitrogen, and water.
- Provided data to improve the accuracy of radiation transport models.
- Assessed the efficacy of novel shielding materials such as graphite composites and polyethylene hybrids.
Conclusions:
- The expanded heavy ion database enhances the accuracy of radiation dosimetry for space missions.
- Experimental data is vital for validating and improving space radiation transport models.
- This research contributes to the development of effective radiation shielding for astronauts.