Ion cyclotron production by a four-wave interaction with a helicon pump.

Autor: Sutherland O; Plasma Research Laboratory, RSPhysSE, Australian National University, 0200, Canberra, Australia., Giles M, Boswell R
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2005 May 27; Vol. 94 (20), pp. 205002. Date of Electronic Publication: 2005 May 23.
DOI: 10.1103/PhysRevLett.94.205002
Abstrakt: Ion cyclotron waves at approximately 0.7 the ion gyrofrequency have been observed experimentally in the large volume helicon reactor WOMBAT. These waves are highly localized along the axis of the device where a 8 cm diameter, 2 m long. Ar II plasma column is produced. Spectral measurements reveal a four-wave interaction where energy is down-converted to the ion cyclotron mode from the helicon pump. The experimental results are explained in terms of a filamentation type instability.
Databáze: MEDLINE