Abstract:
This invention relates to a spectral radiation device which includes a hollow cathode and an anode enclosed within an envelope for emitting a beam of spectral radiation and also for generating ground state atoms which will fluoresce and yield resonant radiation in response to selected incoming radiations.
Abstract:
An electrical discharge device having a circulating gas medium and which incorporates gas permeable electrode members for permitting increased pumping speed of the circulating gas to thereby reduce the gas pressure while maintaining the desired distance between electrodes to obtain an increase in the breakdown potential.
Abstract:
THIS INVENTION RELATES TO A SPECTRAL EMISSION AND DETECTION DEVICE WHICH INCLDUES AN ENVELOPE FILLED WITH AN INERT GAS CAPABLE OF SUSTAINING A DISCHARGE UNDER APPLICATION OF RADIO FREQUENCY POWER. THE ENVELOPE ALSO INCLUDES A METAL OR METALS IN A PURE STATE OR A CHEMICAL COMPOUND TO PRODUCE SHARP SPECTRAL LINES OF THE ATOMIC SPECTRA OF THE METAL ENCLOSED. THE DEIVCE IS CAPABLE OF EMISSION OF LIGHT OF WAVELENGTHS CHARACTERISTIC OF THE MATERIAL AS WELL AS GENERATION OF GROUND STATE ATOMS SUBJECT OT ABSORPTION OF RADIATION AND EMISSION OF RADIANT ENERGY AT THE SAME OR HIGHER WAVELENGTH.
Abstract:
A radiation source of the hollow cathode variety capable of emission of spectral radiation characteristic of the elements arsenic, antimony and bismuth.
Abstract:
8 48,558 A hollow cathode type light source is provided having improved operating stability by forming the cathode of an alloy of a highly reactive, unstable prime metal of interest for spectral emission, and of a chemically stable, readily sputtered metal. An alloy of silver and calcium with a small amount of magnesium provides a hollow cathode device which exhibits stable operation after a mimimum warm-up time.
Abstract:
An improved hollow cathode spectral light source which exhibits improved long-lived light output. An apertured baffle member is disposed between the device anode and the light output end of the envelope, with the aperture diameter and the spacing between the anode and the baffle member determined to minimize deposition of cathode material on the interior surface of the light output end of the envelope.