Patent ID: 7976612

Claim:
In a droplet removing device in a plasma generator by which a plasma is generated by a vacuum arc discharge performed in an arc discharge section set under a vacuum atmosphere and cathode material particles (referred to as droplets) produced subsidiarity from a cathode at a time of plasma generation are removed, said droplet removing device in said plasma generator characterized in that a tubular traveling passage through which said plasma and said droplets travel under mixed state is formed, one or more aperture having a passing hole at an eccentric position is provided in said tubular traveling passage, and a magnetic field generating means for passing said plasma through said eccentric passing hole of said aperture is arranged on an outer circumference of said tubular traveling passage, wherein said plasma passes through said eccentric passing hole of said aperture after being curved in said tubular traveling passage by a magnetic field generated from said magnetic field generating means, said droplets are separated from said plasma at the time of bending and removed by colliding against a wall face of said aperture.