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E. C. Kemble, Phys. Rev. 19, p. 394; 1922. (Abstract.)

Foote and Mohler give the value 13.7 volts. (Origin of Spectra, p. 186.) Their value has since been confirmed by Knipping (Zs. f. Phys. 7, p. 328; 1921) and by Mackay (Phys. Rev. 24, p. 319, 1924.)

E. F. Barker and O. S Duffendack, Phys. Rev. 26, p. 339; 1925.

F. L. Mohler, Phys. Rev. 25, p. 583, 1925 (Abstract).

Phil. Mag. 47, p. 549; 1924.

j is the quantum number which measures the total angular momentum of the molecule and jm is equivalent to Kratzer's ρ. (Cf. Eq. 3a below.) Bell uses the symbols m′, m, m_{0}′ for the quantities here designated as m,j,ρ respectively.

ρ is usually assumed to be ½ for the HC1 bands. The analysis given below makes 0.4925 the most probable value of ρ. The large discrepancy between Mr. Bell's value of ρ and the others is due to the fact that he uses negative values of j for the negative branch of the band and fails to change the sign of ρ with that of j. Thus the absolute values of m which he uses in connection with the negative branch are not the same as those for the positive branch.

W. F. Colby, Astrophys. J. 58, p. 303; 1923.

A. Kratzer, Annalen d. Physik 71, p. 72; 1923.

Kratzer gives larger values of δ for the upper electronic level associated with cyanogen, mercury, and zinc bands analysed by him. In the case of cadmium the reverse is true, but δ is here fairly small for both initial and final states.

A. Kratzer: Zs. f. Phys. 3, p. 289; 1920.

M. Born and E. Hückel: Physikal. Zs. 24, p. 1; 1923.

E. C. Kemble: Proc. Nat. Acad. Sci. 7, p. 283; 1921.

The author is informed by Professor Birge that the analysis of the vibrational energy values associated with electronic bends indicates that the coefficient δ of the cubic term in the expression for A_{n} is generally negligible, even though the terms of higher degree must be taken into account.

F. W. Loomis: Astrophys. J. 52, p. 248; 1920.

Colby, Meyer, and Bronk: Astrophys. J. 57, p. 7; 1923.

Primes refer to the upper energy level and double primes to the lower one.

R. S. Mulliken: Phys. Rev. 25, p. 259; 1925.

M. Born and W. Heisenberg: Zs. f. Phys. 23, p. 388; 1924.

K. Fajans and G. Joos: Zs. f. Phys. 23, p. 1; 1924.

Cf. M. Born: Die Naturwissenschaften 12, p. 1203; 1924. E. V. Angerer: Zs. f. Phys. 11, p. 167; 1922.

O Oldenberg: Zs. f. Phys. 25, p. 2; 1924.
Barker, E. F.
E. F. Barker and O. S Duffendack, Phys. Rev. 26, p. 339; 1925.
Born, M.
M. Born and E. Hückel: Physikal. Zs. 24, p. 1; 1923.
M. Born and W. Heisenberg: Zs. f. Phys. 23, p. 388; 1924.
Cf. M. Born: Die Naturwissenschaften 12, p. 1203; 1924. E. V. Angerer: Zs. f. Phys. 11, p. 167; 1922.
Colby, W. F.
W. F. Colby, Astrophys. J. 58, p. 303; 1923.
Duffendack, O. S
E. F. Barker and O. S Duffendack, Phys. Rev. 26, p. 339; 1925.
Fajans, K.
K. Fajans and G. Joos: Zs. f. Phys. 23, p. 1; 1924.
Heisenberg, W.
M. Born and W. Heisenberg: Zs. f. Phys. 23, p. 388; 1924.
Hückel, E.
M. Born and E. Hückel: Physikal. Zs. 24, p. 1; 1923.
Joos, G.
K. Fajans and G. Joos: Zs. f. Phys. 23, p. 1; 1924.
Kemble, E. C.
E. C. Kemble, Phys. Rev. 19, p. 394; 1922. (Abstract.)
E. C. Kemble: Proc. Nat. Acad. Sci. 7, p. 283; 1921.
Kratzer, A.
A. Kratzer, Annalen d. Physik 71, p. 72; 1923.
A. Kratzer: Zs. f. Phys. 3, p. 289; 1920.
Loomis, F. W.
F. W. Loomis: Astrophys. J. 52, p. 248; 1920.
Mohler, F. L.
F. L. Mohler, Phys. Rev. 25, p. 583, 1925 (Abstract).
Mulliken, R. S.
R. S. Mulliken: Phys. Rev. 25, p. 259; 1925.
Oldenberg, O.
O Oldenberg: Zs. f. Phys. 25, p. 2; 1924.
Other (22)
E. C. Kemble, Phys. Rev. 19, p. 394; 1922. (Abstract.)
Foote and Mohler give the value 13.7 volts. (Origin of Spectra, p. 186.) Their value has since been confirmed by Knipping (Zs. f. Phys. 7, p. 328; 1921) and by Mackay (Phys. Rev. 24, p. 319, 1924.)
E. F. Barker and O. S Duffendack, Phys. Rev. 26, p. 339; 1925.
F. L. Mohler, Phys. Rev. 25, p. 583, 1925 (Abstract).
Phil. Mag. 47, p. 549; 1924.
j is the quantum number which measures the total angular momentum of the molecule and jm is equivalent to Kratzer's ρ. (Cf. Eq. 3a below.) Bell uses the symbols m′, m, m_{0}′ for the quantities here designated as m,j,ρ respectively.
ρ is usually assumed to be ½ for the HC1 bands. The analysis given below makes 0.4925 the most probable value of ρ. The large discrepancy between Mr. Bell's value of ρ and the others is due to the fact that he uses negative values of j for the negative branch of the band and fails to change the sign of ρ with that of j. Thus the absolute values of m which he uses in connection with the negative branch are not the same as those for the positive branch.
W. F. Colby, Astrophys. J. 58, p. 303; 1923.
A. Kratzer, Annalen d. Physik 71, p. 72; 1923.
Kratzer gives larger values of δ for the upper electronic level associated with cyanogen, mercury, and zinc bands analysed by him. In the case of cadmium the reverse is true, but δ is here fairly small for both initial and final states.
A. Kratzer: Zs. f. Phys. 3, p. 289; 1920.
M. Born and E. Hückel: Physikal. Zs. 24, p. 1; 1923.
E. C. Kemble: Proc. Nat. Acad. Sci. 7, p. 283; 1921.
The author is informed by Professor Birge that the analysis of the vibrational energy values associated with electronic bends indicates that the coefficient δ of the cubic term in the expression for A_{n} is generally negligible, even though the terms of higher degree must be taken into account.
F. W. Loomis: Astrophys. J. 52, p. 248; 1920.
Colby, Meyer, and Bronk: Astrophys. J. 57, p. 7; 1923.
Primes refer to the upper energy level and double primes to the lower one.
R. S. Mulliken: Phys. Rev. 25, p. 259; 1925.
M. Born and W. Heisenberg: Zs. f. Phys. 23, p. 388; 1924.
K. Fajans and G. Joos: Zs. f. Phys. 23, p. 1; 1924.
Cf. M. Born: Die Naturwissenschaften 12, p. 1203; 1924. E. V. Angerer: Zs. f. Phys. 11, p. 167; 1922.
O Oldenberg: Zs. f. Phys. 25, p. 2; 1924.
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