Possible using of gamma ray measurements for monitoring and prediction of radiation hazard

Details Possible using of gamma ray measurements for monitoring and prediction of radiation hazard Possible using of gamma ray measurements for monitoring and prediction of radiation hazard

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.471..457d&link_type=abstract

In: 15th ESA Symposium on European Rocket and Balloon Programmes and Related Research, 28 - 31 May 2001, Biarritz, France. Ed.:

Physics

Heliosphere, Energetic Particles, Cosmic Rays

Scientific paper

On the basis of data on flare energetic particle generation and propagation in the Heliosphere we calculate the space-time-energy distribution of these particles in the Heliosphere in the periods of great events. On the basis of observation data and investigations of cosmic ray nonlinear processes in the Heliosphere we determine the space-time distribution of solar wind matter. Then we calculate the generation of gamma-rays by decay of neutral pions generated in nuclear interactions of flare energetic particles with solar wind matter and determine the expected space-time distribution of gamma-ray emissivity. Then we calculate the expected time variation of the angle distribution and energy spectrum of gamma ray fluxes generated by interaction of flare energetic particles with solar wind matter for observations on the Earth's orbit from satellites, rockets and balloons or from space-probes on different distances from the Sun. We show that these measurements by gamma ray telescopes directed in few degrees from the Sun will give important information on flare energetic particle energy spectrum in source and information on propagation parameters in the interplanetary space in vicinities of the Sun. On the basis of this information can be made exact forecast of expected radiation hazards.

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