公开(公告)号：US3611014A

公开(公告)日：1971-10-05

申请号：US3611014D

申请日：1970-05-04

Applicant: UNION CARBIDE CORP

Inventor： TROUE HARDEN HENRY ,  DAY LEDFORD H JR

IPC: H01J17/30 ,  H05H1/48 ,  H01J7/24 ,  H01J7/36

CPC classification number: H05H1/48 ,  H01J17/30

Abstract: An arc is initiated between a pair of hollow electrodes spaced a relatively substantial distance apart and contained at opposite ends in a quartz tube by passing a rod through the bore of one electrode and into the bore of the other electrode, establishing a swirling gas vortex about the rod sufficient to cause the rod to make continuous internal rotational contact with the bore of each electrode, and impressing thereafter a relatively low voltage across the electrodes while withdrawing the rod. The rod is connected to a piston assembly externally connected at one end of the torch.