Patent ID: 9265139
Filing Date: 2016-02-16
CPC Classification: H01J,H05H

Claim Text:
1. An electron cyclotron resonance ionisation device, comprising: a sealed vacuum chamber; an electromagnetic wave injector configured to inject an electromagnetic wave into said sealed vacuum chamber; a magnetic structure for producing a magnetic field in said sealed vacuum chamber and for generating a plasma along the magnetic field lines, the modulus of said magnetic field forming a magnetic mirror structure having a magnetic field profile that includes two maxima and a minimum between the two maxima, wherein the minimum of the magnetic field profile is equal to or less than a value for which electron cyclotron resonance is achieved so that at least one electron cyclotron resonance region is formed in the chamber; said sealed vacuum chamber being a waveguide having a length greater than or equal to a guide wavelength corresponding to a frequency of the injected electromagnetic wave, wherein said sealed vacuum chamber comprises a plasma ignited without prior injection of gas, said sealed vacuum chamber being a chamber in which a pressure less than 10 −4 mbar prevails.