Abstract

Absorption coefficients of oxygen were measured between 300A and 1300A using a grazing incidence vacuum spectrograph together with a line emission light source. The coefficients near 1300A were less than k=10 cm−1. The bands in the region between 1300A and 1000A showed strong absorption of the same order of magnitude as in the Worley bands of nitrogen. No strong continuous absorption was found in the region between 1300A and 740A. The continuous absorption of oxygen below 740A was interpreted as composed of the ionization continua of several Rydberg series converging to the excited states of the molecular ion of oxygen. The continuum had a broad maximum with k-values of about 700 cm−1 between 400A and 600A and, in contrast to nitrogen, still showed a large absorption of k=530 cm−1 at 303A. An estimate of the integrated absorption coefficient was made and the corresponding f-value was found to be 6, in agreement with the predictions from classical dispersion theory.

© 1952 Optical Society of America

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References

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  1. R. Ladenburg and C. C. Van Voorhis, Phys. Rev. 43, 315 (1933).
    [Crossref]
  2. Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
    [Crossref]
  3. R. Ladenburg and G. Wolfsohn, Z. Physik 79, 42 (1932).
    [Crossref]
  4. E. G. Schneider, J. Opt. Soc. Am. 30, 128 (1940).
    [Crossref]
  5. K. C. Clark, Phys. Rev.73, 1250(A) (1948). Also by personal correspondence.
  6. W. C. Price and G. Collins, Phys. Rev. 48, 714 (1935).
    [Crossref]
  7. Weissler, Lee, and Mohr, J. Opt. Soc. Am. (to be published).
  8. Y. Tanaka and T. Takamine, Sci. Pap. Inst. Phys. Chem. Res., Tokyo 39, 437 (1942).
  9. W. M. Elsasser, Phys. Rev. 54, 126 (1938).
    [Crossref]
  10. Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
    [Crossref]
  11. R. E. Worley, Phys. Rev. 64, 207 (1943).
    [Crossref]
  12. G. Herzberg, Molecular Spectra and Molecular Structure, (D. Van Nostrand Company, Inc., New York, 1950), 2nd Edition, p. 385.

1944 (1)

Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
[Crossref]

1943 (1)

R. E. Worley, Phys. Rev. 64, 207 (1943).
[Crossref]

1942 (1)

Y. Tanaka and T. Takamine, Sci. Pap. Inst. Phys. Chem. Res., Tokyo 39, 437 (1942).

1940 (1)

1938 (1)

W. M. Elsasser, Phys. Rev. 54, 126 (1938).
[Crossref]

1935 (1)

W. C. Price and G. Collins, Phys. Rev. 48, 714 (1935).
[Crossref]

1933 (1)

R. Ladenburg and C. C. Van Voorhis, Phys. Rev. 43, 315 (1933).
[Crossref]

1932 (2)

Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
[Crossref]

R. Ladenburg and G. Wolfsohn, Z. Physik 79, 42 (1932).
[Crossref]

Boyce,

Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
[Crossref]

Brock Dale,

Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
[Crossref]

Clark, K. C.

K. C. Clark, Phys. Rev.73, 1250(A) (1948). Also by personal correspondence.

Collins, G.

W. C. Price and G. Collins, Phys. Rev. 48, 714 (1935).
[Crossref]

Elsasser, W. M.

W. M. Elsasser, Phys. Rev. 54, 126 (1938).
[Crossref]

Herzberg, G.

G. Herzberg, Molecular Spectra and Molecular Structure, (D. Van Nostrand Company, Inc., New York, 1950), 2nd Edition, p. 385.

Ladenburg,

Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
[Crossref]

Ladenburg, R.

R. Ladenburg and C. C. Van Voorhis, Phys. Rev. 43, 315 (1933).
[Crossref]

R. Ladenburg and G. Wolfsohn, Z. Physik 79, 42 (1932).
[Crossref]

Lee,

Weissler, Lee, and Mohr, J. Opt. Soc. Am. (to be published).

Mohr,

Weissler, Lee, and Mohr, J. Opt. Soc. Am. (to be published).

Nielsen,

Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
[Crossref]

Price, W. C.

W. C. Price and G. Collins, Phys. Rev. 48, 714 (1935).
[Crossref]

Schneider, E. G.

Takamine, T.

Y. Tanaka and T. Takamine, Sci. Pap. Inst. Phys. Chem. Res., Tokyo 39, 437 (1942).

Tanaka, Y.

Y. Tanaka and T. Takamine, Sci. Pap. Inst. Phys. Chem. Res., Tokyo 39, 437 (1942).

Thornton,

Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
[Crossref]

Van Voorhis,

Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
[Crossref]

Van Voorhis, C. C.

R. Ladenburg and C. C. Van Voorhis, Phys. Rev. 43, 315 (1933).
[Crossref]

Weissler,

Weissler, Lee, and Mohr, J. Opt. Soc. Am. (to be published).

Wolfsohn, G.

R. Ladenburg and G. Wolfsohn, Z. Physik 79, 42 (1932).
[Crossref]

Worley, R. E.

R. E. Worley, Phys. Rev. 64, 207 (1943).
[Crossref]

J. Opt. Soc. Am. (1)

Phys. Rev. (5)

R. Ladenburg and C. C. Van Voorhis, Phys. Rev. 43, 315 (1933).
[Crossref]

Ladenburg, Van Voorhis, and Boyce, Phys. Rev. 40, 1018(A) (1932).
[Crossref]

W. C. Price and G. Collins, Phys. Rev. 48, 714 (1935).
[Crossref]

W. M. Elsasser, Phys. Rev. 54, 126 (1938).
[Crossref]

R. E. Worley, Phys. Rev. 64, 207 (1943).
[Crossref]

Revs. Modern Phys. (1)

Nielsen, Thornton, and Brock Dale, Revs. Modern Phys. 16, 307 (1944).
[Crossref]

Sci. Pap. Inst. Phys. Chem. Res., Tokyo (1)

Y. Tanaka and T. Takamine, Sci. Pap. Inst. Phys. Chem. Res., Tokyo 39, 437 (1942).

Z. Physik (1)

R. Ladenburg and G. Wolfsohn, Z. Physik 79, 42 (1932).
[Crossref]

Other (3)

K. C. Clark, Phys. Rev.73, 1250(A) (1948). Also by personal correspondence.

Weissler, Lee, and Mohr, J. Opt. Soc. Am. (to be published).

G. Herzberg, Molecular Spectra and Molecular Structure, (D. Van Nostrand Company, Inc., New York, 1950), 2nd Edition, p. 385.

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Figures (4)

Fig. 1(A)
Fig. 1(A)

Absorption of O2. 1300A to 900A.

Fig. 1(B)
Fig. 1(B)

Absorption of O2. 1000A to 600A.

Fig. 1(C)
Fig. 1(C)

Absorption of O2. 600A to 300A.

Fig. 2
Fig. 2

Energy level diagram of the O2 molecule. The full horizontal lines give some of the observed electronic states. The dashed horizontal lines indicate ionization limits. Vertical arrows signify transitions: (1) first negative bands; (2) second negative bands; (3) Schumann-Runge bands; (4) H-, I-Rydberg series (see reference 6); (5) M-. N-Rydberg series (see reference 6); (6) P- Q-Rydberg series (see reference 6); (7) Tanaka-Takamine (see reference 8) (0, 0)-, (1, 0)-, (2, 0)-Rydberg series; (8) unclassified bands in the region between 1000A and 700A; (9) unclassified bands between 1050A and 1300A; (10) Tanaka-Takamine (see reference 8) Rydberg series converging on 610A,

Tables (2)

Tables Icon

Table I Absorption coefficients of oxygen.

Tables Icon

Table II Comparison of absorption coefficients in oxygen, first- and second-order lines. Plates LE 25.

Equations (7)

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I = I 0 e - k x = I 0 e - k T 0 L p 0 T p = I 0 e - α p ,
ln I 0 - ln I = α p ,
k k ( σ g 2 s ) 2 ( σ u 2 s ) 2 ( σ g 2 p ) 2 ( π u 2 p ) 4 ( π g 2 p ) 2 , X 3 Σ g - .
k k ( σ g 2 s ) 2 ( σ u 2 s ) 2 ( σ g 2 p ) 2 ( π u 2 p ) 3 ( π g 2 p ) 3 , B 3 Σ u - ,
k k ( σ g 2 s ) 2 ( σ u 2 s ) 2 ( σ g 2 p ) 2 ( π u 2 p ) 4 ( π g 2 p ) , O 2 + X 2 Π g ,
k k ( σ g 2 s ) 2 ( σ u 2 s ) 2 ( σ g 2 p ) 2 ( π u 2 p ) 3 ( π g 2 p ) 2 , a Π 4 u             and             A Π 2 u ,
k k ( σ g 2 s ) 2 ( σ u 2 s ) 2 ( σ g 2 p ) ( π u 2 p ) 4 ( π g 2 p ) 2 , O 2 + b 4 Σ g - ,