Abstract

An attempt is made to obtain the design of a photometer unit which may be used with an infrared spectrograph so that percent transmission or some related quantity may be recorded directly. Several basic methods of accomplishing this are evaluated. It is concluded that the following should characterize the design: the optical system should be symmetrical; there should be only one path through the spectrograph; only one detector and amplifier should be employed; and these should actuate, through an appropriate servomechanism, a device to maintain equality of intensity in the two radiation beams, so that a null system results. Several possible basic designs for some of the components of the photometer are discussed.

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  1. N. Wright and L. W. Herscher, J. Opt. Soc. Am. 37, 211 (1947).
  2. Baird, O'Bryan, Ogden, and Lee, J. Opt. Soc. Am. 37, 754 (947).
  3. B. L. Crawford, Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June, 1946.
  4. E. B. Baker and C. D. Robb, Rev. Sci. Instr. 14, 362 (1943).
  5. Standard Oil Development Corporation (private communication).
  6. G. B. B. M. Sutherland and H. W. Thompson, Trans. Faraday Soc. 41, 179 (1945).
  7. J. D. Hardy and A. I. Ryder, Phys. Rev. 55, 1112 (1939).
  8. J. U. White and M. D. Liston, J. Opt. Soc. Am. 40, 29 (1950),
  9. Abraham Savitsky and Ralph S. Halford, Rev. Sci. Instr. 21, 203 (1950).
  10. Rugg, Calvert, and Smith (to be published).
  11. Hornig, Hydc, and Adcock, J. Opt. Soc. Am. 40, 497 (1950).
  12. G. R. Harrison and E. P. Bentley, J. Opt. Soc. Am. 30, 290 (1940).
  13. J. L. Michaelson and H. A. Liebhafsky, Gen. Elec. Rev. 39, 445 (1936).
  14. L. C. Roess, Rev. Sci. Instr. 16, 172 (1945).
  15. C. H. Schlesman and F. G. Brockman, J. Opt. Soc. Am. 35, 755 (1945).
  16. J. A. Becker and H. R. Moore, J. Opt. Soc. Am. 36, 354 (1946).

Baker, E. B.

E. B. Baker and C. D. Robb, Rev. Sci. Instr. 14, 362 (1943).

Becker, J. A.

J. A. Becker and H. R. Moore, J. Opt. Soc. Am. 36, 354 (1946).

Bentley, E. P.

G. R. Harrison and E. P. Bentley, J. Opt. Soc. Am. 30, 290 (1940).

Brockman, F. G.

C. H. Schlesman and F. G. Brockman, J. Opt. Soc. Am. 35, 755 (1945).

Crawford, B. L.

B. L. Crawford, Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June, 1946.

Halford, Ralph S.

Abraham Savitsky and Ralph S. Halford, Rev. Sci. Instr. 21, 203 (1950).

Hardy, J. D.

J. D. Hardy and A. I. Ryder, Phys. Rev. 55, 1112 (1939).

Harrison, G. R.

G. R. Harrison and E. P. Bentley, J. Opt. Soc. Am. 30, 290 (1940).

Herscher, L. W.

N. Wright and L. W. Herscher, J. Opt. Soc. Am. 37, 211 (1947).

Liebhafsky, H. A.

J. L. Michaelson and H. A. Liebhafsky, Gen. Elec. Rev. 39, 445 (1936).

Liston, M. D.

J. U. White and M. D. Liston, J. Opt. Soc. Am. 40, 29 (1950),

Michaelson, J. L.

J. L. Michaelson and H. A. Liebhafsky, Gen. Elec. Rev. 39, 445 (1936).

Moore, H. R.

J. A. Becker and H. R. Moore, J. Opt. Soc. Am. 36, 354 (1946).

Robb, C. D.

E. B. Baker and C. D. Robb, Rev. Sci. Instr. 14, 362 (1943).

Roess, L. C.

L. C. Roess, Rev. Sci. Instr. 16, 172 (1945).

Ryder, A. I.

J. D. Hardy and A. I. Ryder, Phys. Rev. 55, 1112 (1939).

Savitsky, Abraham

Abraham Savitsky and Ralph S. Halford, Rev. Sci. Instr. 21, 203 (1950).

Schlesman, C. H.

C. H. Schlesman and F. G. Brockman, J. Opt. Soc. Am. 35, 755 (1945).

Sutherland, G. B. B. M.

G. B. B. M. Sutherland and H. W. Thompson, Trans. Faraday Soc. 41, 179 (1945).

Thompson, H. W.

G. B. B. M. Sutherland and H. W. Thompson, Trans. Faraday Soc. 41, 179 (1945).

White, J. U.

J. U. White and M. D. Liston, J. Opt. Soc. Am. 40, 29 (1950),

Wright, N.

N. Wright and L. W. Herscher, J. Opt. Soc. Am. 37, 211 (1947).

Other (16)

N. Wright and L. W. Herscher, J. Opt. Soc. Am. 37, 211 (1947).

Baird, O'Bryan, Ogden, and Lee, J. Opt. Soc. Am. 37, 754 (947).

B. L. Crawford, Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June, 1946.

E. B. Baker and C. D. Robb, Rev. Sci. Instr. 14, 362 (1943).

Standard Oil Development Corporation (private communication).

G. B. B. M. Sutherland and H. W. Thompson, Trans. Faraday Soc. 41, 179 (1945).

J. D. Hardy and A. I. Ryder, Phys. Rev. 55, 1112 (1939).

J. U. White and M. D. Liston, J. Opt. Soc. Am. 40, 29 (1950),

Abraham Savitsky and Ralph S. Halford, Rev. Sci. Instr. 21, 203 (1950).

Rugg, Calvert, and Smith (to be published).

Hornig, Hydc, and Adcock, J. Opt. Soc. Am. 40, 497 (1950).

G. R. Harrison and E. P. Bentley, J. Opt. Soc. Am. 30, 290 (1940).

J. L. Michaelson and H. A. Liebhafsky, Gen. Elec. Rev. 39, 445 (1936).

L. C. Roess, Rev. Sci. Instr. 16, 172 (1945).

C. H. Schlesman and F. G. Brockman, J. Opt. Soc. Am. 35, 755 (1945).

J. A. Becker and H. R. Moore, J. Opt. Soc. Am. 36, 354 (1946).

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