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Windowless Low Temperature Unit for Use in Evacuated Spectrophotometers

Volume 28, Number 6 (Dec. 1974) Page 591-594

Fowler, B.O.; Lambert, E.C.

This article describes accessory apparatus to utilize the Beckman variable temperature unit without windows for obtaining low temperature spectra in the evacuated Perkin-Elmer FIS-3 far infrared spectrophotometer. The windowless feature of this low temperature unit allows spectra to be recorded without energy loss and interfering absorption that arise from windows in conventional low temperature units.