THE INNER HELICITY OF PROMINENCE WITH HELICAL STRUCTURE

The magnetic inner helicity of the prominence with belieal structure is inferredin this paper. Using the observational data, the value of inner helicity is calculated.It is shown that. (1) the scale of the inner helicity is related to the stability of thebelieal prominence; (2) the quiescent prominence has smaller inner helicity, whilethe eruptive prominence has larger helicity; (3) in the whole evolutional processof the prominence (e.g. quiescent-eruptive- stable ), t he helicity increase s firstly andthen it is transferred to the high corona.