A TWO-BEAM PHOTOELECTRIC ELECTRON-BEAM TUBE SPECTROPHOTOMETER
A two-beam photoelectric electron-beam tube spectrophotometer is described. It has the following special features: the stability of the bundle of rays coming out from the monochromator's slit is maintained, and the regulation of the wave length of this bundle is performed by a moving inlet slit constituting a through-cut in the side of a revolving obturator. A prism vibrating at a frequency twice as low as the frequency of the passsge of spectra and placed after the monochromator, switches the spectra over to two channels. A variant of this model is distinguished by the following special features: the photo-current is compensated within the instrument's spectral range by an irregalarly-shaped disphragm located beyond the iniet slit and having the form of a window of varying width. Another variant is distinguished by the following features: for obtaining on the screen a zero passage line by sweeping the beam of the electron-beam tube during the intervals between the spectra, the sweep generator has a frequency two times higher than the frequency of the passage of spectra. This spectrophotometer is equipped with an additional illuminator, which lights up samples so as to make it possible to watch the variations of light-sbsorption in the sample being examined. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-020868
- OSTI ID:
- 4052965
- Journal Information:
- Byull. Izobretenii, Journal Name: Byull. Izobretenii Vol. Vol: No. 11
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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