Abstract
In certain solar flares a large proportion of the energy emitted is in the form of fast particles. These particles include electrons, protons and possibly heavier atomic nuclei. The interaction of the electron component with solar material is revealed by the radio outbursts accompanying certain flares. Various authors have concluded that the interaction of the solar protons at their point of production with solar material could lead to the generation of high-energy gamma-rays (above 50 MeV) due to the formation of neutral pions in nuclear interactions. The purpose of this paper is to show that the resultant gamma-ray energy spectrum will have a maximum at an energy which depends on the direction of motion of solar protons with respect to solar material. The position of this maximum is shown to be relatively independent of the energy spectrum of the incident solar protons. The experimental method to be used to reveal this effect is discussed and plans to perform such an investigation are mentioned.
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