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Updated: Jul 28, 2026
06:21
Diffuse Optical Spectroscopy for the Quantitative Assessment of Acute Ionizing Radiation Induced Skin Toxicity Using a Mouse Model
Published on: May 27, 2016
Overview of atmospheric ionizing radiation (AIR) research: SST-present
J W Wilson1, P Goldhagen, V Rafnsson
1NASA Langley Research Center, Hampton, VA 23681, USA. john.w.wilson@larc.nasa.gov
Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|January 20, 2004
Summary
Solar energetic particles (SEP) and neutrons pose significant radiation hazards for aircrew. Studies confirm neutrons contribute over half of galactic cosmic ray exposures, necessitating ongoing epidemiological research for flight safety.
Area of Science:
- Aviation safety
- Radiation biology
- Space physics
Background:
- Concerns regarding solar energetic particles (SEP) and neutron exposure for supersonic transport (SST) occupants were raised in 1961.
- Galactic cosmic ray (GCR) exposures and the role of neutrons in atmospheric propagation have been studied since the SST program.
- Lowered radiation exposure limits and aircrew classification as radiation workers renewed interest in GCR exposures at flight altitudes.
Purpose of the Study:
- To assess the radiation exposure risks associated with supersonic and high-speed civil transport (HSCT) aircraft.
- To validate the role of high-energy neutrons in GCR exposures at commercial flight altitudes.
- To inform epidemiological studies and radiation protection strategies for aircrew.
Main Methods:
- Analysis of flight data from the SST program and ER-2 flights.
- Investigation of neutron contributions to GCR exposures, particularly neutrons above 10 MeV.
- Evaluation of aircraft materials' effects on interior radiation exposure.
- Review of epidemiological studies and health outcomes of aircrew and nuclear workers.
Main Results:
- SEP were confirmed as a significant aviation hazard.
- Neutrons were found to contribute over half of GCR exposures, with significant impact from those above 10 MeV.
- Studies informed operational requirements and highlighted the need for further research on high-speed transport radiation.
Conclusions:
- High-energy neutrons are a critical factor in aircrew radiation exposure.
- Renewed interest in aircrew health outcomes necessitates updated epidemiological programs.
- Improved radiation models require corresponding epidemiological validation for US aircrew.
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