Radiation from the sun pushes dust particles away from the coma, forming a dust tail, while charged particles from the sun convert some of the comet's gases into ions, forming an ion tail.

In this paper, the physical mechanism of radiation induced by ion relativistic mass effect is analysed and the qualitative criterion is given.

This research is mainly use heavy ion radiation on sweet sorghum, to study the effects of different doses in sweet sorghum growth, lay the foundation for the breeding of sweet sorghum.