Study of Cryogenic Plasma in Superfluid Liquid Helium

摘要

The work describes work on Study of Cryogenic Plasma in Superfluid Liquid Helium (Principal investigator: O. Ishihara, AOARD-04-4018) for the period from June 7, 2004 to August 6, 2005. A preliminary experiment to produce a DC discharge plasma in a vapor of liquid helium started. In addition, a complex plasma with charged fine particles in the cryogenic environment has been also produced successfully. The analytical study on the experimental results completed at Niigata University for the pulsed discharge in a microwave cavity in liquid helium revealed the nature of decaying plasma in liquid helium.