A new dynamical atmospheric ionizing radiation (air) model for epidemiological studies

Details A new dynamical atmospheric ionizing radiation (air) model for epidemiological studies A new dynamical atmospheric ionizing radiation (air) model for epidemiological studies

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003adspr..32...17d&link_type=abstract

Advances in Space Research, Volume 32, Issue 1, p. 17-26.

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Scientific paper

A new Atmospheric Ionizing Radiation (AIR) model is currently being developed for use in radiation dose evaluation in epidemiological studies targeted to atmospheric flight personnel such as civilian airlines crewmembers. The model will allow computing values for biologically relevant parameters, e.g. dose equivalent and effective dose, for individual flights from 1945. Each flight is described by its actual three-dimensional flight profile, i.e. geographic coordinates and altitudes varying with time. Solar modulated primary particles are flltered with a new analytical fully angular dependent geomagnetic cutoff rigidity model, as a function of latitude, longitude, arrival direction, altitude and time. The particle transport results have been obtained with a technique based on the three-dimensional Monte Carlo transport code FLUKA, with a special procedure to deal with HZE particles. Particle fluxes are transformed into dose-related quantities and then integrated all along the flight path to obtain the overall flight dose. Preliminary validations of the particle transport technique using data from the AIR Project ER-2 flight campaign of measurements are encouraging. Future efforts will deal with modeling of the effects of the aircraft structure as well as inclusion of solar particle events.

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