Comparison of cosmic radiation doses contributed by photon and neutron for air crew between polar route and non-polar route flights
10.3760/cma.j.issn.0254-5098.2010.04.028
- VernacularTitle:极地与非极地航线空勤人员所受光子和中子宇宙辐射剂量比较
- Author:
Fei TUO
;
Yongxiang YAO
;
Lian ZHOU
;
Yun LIU
;
Wenhong LI
;
Li ZHAO
;
Qiang ZHOU
;
Cuihua XU
;
Tianshan REN
- Publication Type:Journal Article
- Keywords:
Polar route flight;
Air crew;
Photon;
Neutron;
Radiation dose
- From:
Chinese Journal of Radiological Medicine and Protection
2010;30(4):469-471
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the cosmic radiation doses to air crew (including pilots and flight attendants) between polar route and non-polar route flights. Methods A typical polar flight route (Beijing-New York) was selected and compared with non-polar route, non-polar route was selected as control group. Optically stimulated luminescence (OSL) dosimeter and CR-39 solid track detector were used to measure the cosmic radiation dose to air crew. Results The annual mean effective dose to air crew from polar route and non-polar route was (5.79 ± 0.92)mSv/a and (2.14 ± 0.64)mSv/a, respectively.The 1000 h effective dose to air crew was (3.10 ± 0.27)mSv/kh and (2.21 ± 0.46)mSv/kh,respectively. There was significant difference between the two groups in either annual mean effective dose (t=30.25, P＜0.05) or 1000 h effective dose (t =7.60, P＜0.05). The doses of pilot groups were higher than that of flight attendants for either polar route ( t = 7.96, P ＜0.05) or non-polar route (t=4.70, P ＜ 0.05). Conclusions The effective dose to air crew from galactic cosmic radiation during polar route fight might be higher than that of non-polar route fight, however, it did not exceed 20 mSv/year,which is the limit of national standard.
