Monte Carlo calculation of the angular distribution of cosmic rays at flight altitudes

被引：20

作者：

Battistoni, G

Ferrari, A

Pelliccioni, M

Villari, R

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[2] Ist Nazl Fis Nucl, Sezione Milano, I-20133 Milan, Italy

[3] CERN, CH-1211 Geneva 23, Switzerland

来源：

RADIATION PROTECTION DOSIMETRY | 2004年 / 112卷 / 03期

关键词：

D O I：

10.1093/rpd/nch418

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The angular distribution of the secondary radiation produced by the galactic component of cosmic rays has been determined by simulating the penetration of the primary spectra in the Earth's atmosphere. The simulations have been carried out with the latest version of the FLUKA code. Particles have been scored at various altitudes according to their angle of incidence for some significant values of vertical cut-off rigidity and solar modulation parameter. The calculated results at typical cruise altitudes for a civil aircraft are presented. The data at 10.7 km have been fitted with simple mathematical equations It has been demonstrated that the major contribution to the doses at aviation altitudes arises from downward-directed particles. The isotropic irradiation usually assumed for the evaluation of aircrew exposure could be a very poor approximation.

引用

页码：331 / 343

页数：13

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