Spectral source, particularly for atomic absorption spectrometry

Details Spectral source, particularly for atomic absorption spectrometry Spectral source, particularly for atomic absorption spectrometry

1978-01-24

1980-04-15

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Electromagnetic influenced discharge device load

315246, 315344, 356314, 356316, H05B 4124

Patent

active

041985893

ABSTRACT:
A spectral source comprises a lamp containing an anode and a cathode in an inert gas. The anode and cathode are different in shape and connected to a high-frequency power source to produce a high-frequency discharge between the anode and cathode to cause both sputtering of the cathode and excitation of a radiation having the spectrum according to the material sputtered from the cathode. The application of solely high-frequency power prevents adherence of the sputtered material to the interior walls of the lamp bulb thereby allowing a reduction of the dimensions of the lamp bulb, prolongating the life time of the lamp and increasing the stability and intensity of the radiation. A magnetic field may be applied to the radiation for Zeeman modulation. Due to the relatively small dimensions of the lamp bulb, relatively small and inexpensive magnets may be used.

REFERENCES:
patent: 3623136 (1971-11-01), Tomita et al.
patent: 3653766 (1972-04-01), Walters et al.
patent: 3893768 (1975-07-01), Stephens
patent: 4095142 (1978-06-01), Murayama et al.
patent: 4097781 (1978-06-01), Koizumi et al.

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