Study of the ratio of non-neutron to neutron dose components of cosmic radiation at typical commercial flight altitudes

CIEMAT, in close co-operation with Iberia Airlines, carried out an extensive programme of in-flight measurements, covering both hemispheres, during the years 2001 and 2002. Although the instrumentation onboard included different active devices, the results presented here were obtained from a polyeth...

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Bibliographic Details
Published in:Radiation protection dosimetry 2004-01, Vol.110 (1-4), p.357-362
Main Authors: Romero, A. M., Saez-Vergara, J. C., Rodriguez, R., Domínguez-Mompell, R.
Format: Article
Language:English
Subjects:
Aircraft - statistics & numerical data
Algorithms
Altitude
Body Burden
Commerce - statistics & numerical data
Cosmic Radiation
Environmental Exposure - analysis
Equipment Design
Humans
Internationality
Linear Energy Transfer
Neutrons
Occupational Exposure - analysis
Occupational Exposure - statistics & numerical data
Radiation Dosage
Radiation Protection - methods
Radioisotopes - analysis
Radiometry - methods
Radiometry - statistics & numerical data
Relative Biological Effectiveness
Reproducibility of Results
Scattering, Radiation
Sensitivity and Specificity
Spain - epidemiology
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Summary:CIEMAT, in close co-operation with Iberia Airlines, carried out an extensive programme of in-flight measurements, covering both hemispheres, during the years 2001 and 2002. Although the instrumentation onboard included different active devices, the results presented here were obtained from a polyethylene/tungsten-moderated rem meter (SWENDI2; Eberline) and an ionisation chamber (RSS-131; Reuter-Stokes) used for measuring the ambient dose equivalent due to the neutron and the non-neutron components of cosmic radiation, respectively. This paper presents a study of each of the dose components mentioned as a function of the vertical cut-off rigidity and the flight altitude. The ratio between the two components is also presented to determine the variations in cosmic radiation composition as a function of the aforementioned parameters. The experimental results have also been compared with those predicted by the code EPCARD3.2 for the non-neutron and the neutron components of the ambient dose equivalent.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/nch112