The radiation in the atmosphere during major solar particle events

被引:14
作者
Clucas, SN [1 ]
Dyer, CS [1 ]
Lei, F [1 ]
机构
[1] QinetiQ, Dept Space, Farnborough GU14 0LX, Hants, England
来源
SPACE LIFE SCIENCES: AIRCRAFT AND SPACE RADIATION ENVIRONMENT | 2005年 / 36卷 / 09期
关键词
solar particle event; cosmic radiation; atmospheric radiation model; cut-off rigidity; aircrew dosimetry; single event effects;
D O I
10.1016/j.asr.2005.08.013
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Major solar particle events can give rise to greatly enhanced radiation throughout the entire atmosphere including at aircraft altitudes. These particle events are very hard to predict and their effect on aircraft is difficult to calculate. A comprehensive model of the energetic radiation in the atmosphere has been developed based on a response matrix of the atmosphere to energetic particle incidence. This model has previously been used to determine the spectral form of several ground level neutron events including February 1956 and September/October 1989. Significant validation of the model has been possible using CREAM data flying onboard Concorde during the September/October 1989 events. Further work has been carried out for the current solar maximum, including estimates of the solar particle spectra during the July 2000, April 2001, and October 2003 events and comparisons of predicted atmospheric measurements with limited flight data. Further CREAM data have been obtained onboard commercial airlines and high altitude business jets during quiet time periods. In addition, the atmospheric radiation model, along with solar particle spectra, have been used to calculate the neutron flux and dose rates along several commercial aircraft flight paths including London to Los Angeles. The influence of rigidity cut-off suppression by geomagnetic storms is examined and shows that the received flight dose during disturbed periods can be significantly enhanced compared with quiet periods. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1657 / 1664
页数:8
相关论文
共 24 条
[1]  
[Anonymous], 1996, ICRP PUBL, V74
[2]  
DESORGHER L, 2003, MAGNETOCOSMICS USERS
[3]   Monte Carlo calculations of the influence on aircraft radiation environments of structures and solar particle events [J].
Dyer, C ;
Lei, F .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2001, 48 (06) :1987-1995
[4]  
Dyer C, 2002, ESA SPEC PUBL, V477, P505
[5]   Solar particle enhancements of single-event effect rates at aircraft altitudes [J].
Dyer, CS ;
Lei, F ;
Clucas, SN ;
Smart, DF ;
Shea, MA .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2003, 50 (06) :2038-2045
[6]   Calculations and observations of solar particle enhancements to the radiation environment at aircraft altitudes [J].
Dyer, CS ;
Lei, F ;
Clucas, SN ;
Smart, DF ;
Shea, MA .
SPACE LIFE SCIENCES: STRUCTURE AND DYNAMICS OF THE GLOBAL SPACE RADIATION FIELD AT AIRCRAFT ALTITUDES, 2003, 32 (01) :81-93
[7]   COMPARATIVE MEASUREMENTS OF SINGLE EVENT UPSET AND TOTAL DOSE ENVIRONMENTS USING THE CREAM INSTRUMENTS [J].
DYER, CS ;
SIMS, AJ ;
FARREN, J ;
STEPHEN, J ;
UNDERWOOD, C .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1992, 39 (03) :413-417
[8]   Cosmic radiation effects on avionics [J].
Dyer, CS ;
Truscott, PR .
MICROPROCESSORS AND MICROSYSTEMS, 1999, 22 (08) :477-483
[9]   Measurements of the SEE environment from sea level to GEO using the CREAM and CREDO experiments [J].
Dyer, CS ;
Sims, A ;
Underwood, C .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1996, 43 (02) :383-402
[10]   MEASUREMENTS OF SOLAR-FLARE ENHANCEMENTS TO THE SINGLE EVENT UPSET ENVIRONMENT IN THE UPPER-ATMOSPHERE [J].
DYER, CS ;
SIMS, AJ ;
FARREN, J ;
STEPHEN, J .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1990, 37 (06) :1929-1937