Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Construction of a Double Beam Recording Infra-Red Spectrophotometer

Not Accessible

Your library or personal account may give you access

Abstract

A new double beam infra-red spectrometer recording directly in percent transmission vs. wave-length has been built on the principles described by Wright. The spectrometer and recorder are a single unit (40″ long, 22″ high, 20″ wide) with external amplifier and power supplies. The instrument makes direct reading transmission records on 34″×11″ charts; employs a 60° Littrow mounted rock salt prism with 60×75-mm faces; has 5″ of length available for sample cells in each beam. Wave-lengths and slit widths are read directly on Veeder counters. Wave-length scanning speed varies from about five minutes to 200 hours for the rock salt region; speed of response from about 4 seconds to over a minute for full scale, with the possibility of a further increase to five minutes if needed; resolution from close to the theoretical limit of the prism to about a tenth as much; paper drive speeds to give uniform scales from 1 to 50 inches per micron by integral factors. By changing cams, spectra can be recorded on constant wave number of other scales. Changes may be made to accommodate prisms of LiF, KBr and other materials. The general features and arrangement of the new instrument are described in this paper. Its detection, amplification and electrical control systems will be described in detail in a second paper. A third paper will give its performance in various types of operation.

© 1950 Optical Society of America

Full Article  |  PDF Article
More Like This
Performance of a Double-Beam Recording Infra-Red Spectrophotometer

John U. White and Max D. Liston
J. Opt. Soc. Am. 40(2) 93-101 (1950)

A Ratio-Recording Double-Beam Infra-Red Spectrophotometer with Automatic Slit-Control*†

D. F. Hornig, G. E. Hyde, and W. A. Adcock
J. Opt. Soc. Am. 40(8) 497-503 (1950)

Amplification and Electrical Systems for a Double Beam Recording Infra-Red Spectrophotometer

Max D. Liston and John U. White
J. Opt. Soc. Am. 40(1) 36-41 (1950)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved