Vacuum ultraviolet light source utilizing rare gas scintillation

Details Vacuum ultraviolet light source utilizing rare gas scintillation Vacuum ultraviolet light source utilizing rare gas scintillation

1993-07-09

1995-05-23

Pascal, Robert J.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

313373, H01J 2334

Patent

active

054184240

ABSTRACT:
A source of light in the vacuum ultraviolet (VUV) spectral region includes a reflective UV-sensitive photocathode supported in spaced parallel relationship with a mesh electrode within a rare gas at low pressure. A high positive potential applied to the mesh electrode creates an electric field which causes drifting of free electrons occurring between the electrodes and producing continuous VUV light output by electric field-driven scintillation amplification sustained by positive photon feedback mediated by photoemission from the photocathode. In one embodiment the lamp emits a narrow-band continuum peaked at 175 nm.

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