Study on Assessment of Absorbed Radiation Dose of Astronaut in Super-large Solar Particle Events
- VernacularTitle:特大太阳质子事件所致航天员辐射剂量估算研究
- Author:
Zhi ZENG
;
Xianghong JIA
;
Junli LI
;
Feng XU
- Publication Type:Journal Article
- Keywords:
super-large solar particle events;
voxel-based phantom;
Monte Carlo method;
space radiation
- From:Space Medicine & Medical Engineering
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develope energic spectrum of super-large solar particle events (SPE),human body model and a Monte Carlo method for estimating the organ dose of astronauts in SPE without the shielding of geomagnetic field. Methods A voxel-based human phantom and shielding model of spacecraft were developed and the Monte Carlo program was compiled and applied to calculate the doses of astronaut's organs with the transport protons of the spectra of super-large SPEs in 1956 and 1972, normalized by the proton fluence for energy greater than 30 MeV. Results The Monte Carlo program was developed successfully and the organ dose under different shielding thickness were also calculated with the program in the normalized spectra of SPEs in 1956 and 1972 without the effects of geomagnetic field. They were similar with prior studies. Conclusion The results are reliable by the comparison with other calculations of prior researchers. Exposure to super-large SPE without the shielding of geomagnetic field would result in a very large organ absorbed dose and may be very danger for manned spaceflight.
