Abstract

The spectrum of a hollow-cathode discharge in a mixture of phosphorus vapor and helium has been hotographed and measured from 500–10 000 A. This source gave new lines of P II and a much more complete P I spectrum than has hitherto been observed. The P II spectrum of 401 lines is essentially classified by combinations of 38 even and 54 odd levels. Thirty-six of these levels are new, and 29 previously listed levels have been rejected. The 3<i>s</i><sup>2</sup> 3<i>p</i> 3<i>d</i>, 4<i>d</i>, 4<i>p</i>, 4ƒ, and 3<i>s</i>3<i>p</i><sup>3</sup> configurations are now complete. Several 5<i>d</i> and 6<i>s</i> levels and most of the expected 5<i>p</i> levels have been found. Except for 3<i>s</i>3<i>p</i><sup>3</sup> and 3<i>s</i><sup>2</sup>3<i>p</i> · <i>nd</i>, which how interaction, the configurations are in good agreement with first-order Russell-Saunders theory. The P II ionization potential is 19.72 v. The previous analyses of P I have been revised and extended to include 98 even and 43 odd levels classifying 382 of 490 lines. New terms belonging to the configurations 3<i>s</i><sup>2</sup> 3<i>p</i><sup>2</sup>4–7<i>s</i>, 4–6<i>p</i>, 3–7<i>d</i> and 4,5ƒ have been found. Wherever feasible, the results have been confronted with the predictions of theory. Several series allow the calculation of a new ionization potential, which is 10.484 v.

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  1. C. C. Kiess, Bur. Standards J. Research 8, 393 (1932).
  2. Howard A. Robinson, Phys. Rev. 49, 297 (1936).
  3. I. S. Bowen, Phys. Rev. 29, 510 (1927).
  4. P. Geuter, Z. wiss. Phot. 5, 1 (1907).
  5. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, 1951), Chap. VII and Chap. XI.
  6. G. Racah, Phys. Rev. 61, 537 (L) (1942).
  7. M. O. Saltmarsh, Phil. Mag. 47, 874 (1924).
  8. J. C. McLennan and A. B. McLay, Trans. Roy. Soc. Can. 21, 63 (1927).
  9. G. Racah, Proc..Rydberg Centennial Confer. on Atomic Spectroscopy (July, 1954).
  10. T. Yamanouchi, Proc. Phys.-Math. Soc. Japan 18, 16 (1936).
  11. Charlotte E. Moore, "Atomic energy levels," Natl. Bur. Standards (U.S.) Circ. No. 467, (1949), Vol. I.
  12. W.-Z. Tsien, Chinese J. Phys. 3, No. 2, 136 (1939).
  13. I. S. Bowen, Phys. Rev. 46, 791 (1934).
  14. T. L. de Bruin, Physica III, 8, 809 (1936).

1949 (1)

Charlotte E. Moore, "Atomic energy levels," Natl. Bur. Standards (U.S.) Circ. No. 467, (1949), Vol. I.

Bowen, I. S.

I. S. Bowen, Phys. Rev. 29, 510 (1927).

I. S. Bowen, Phys. Rev. 46, 791 (1934).

Condon, E. U.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, 1951), Chap. VII and Chap. XI.

de Bruin, T. L.

T. L. de Bruin, Physica III, 8, 809 (1936).

Geuter, P.

P. Geuter, Z. wiss. Phot. 5, 1 (1907).

Kiess, C. C.

C. C. Kiess, Bur. Standards J. Research 8, 393 (1932).

McLay, A. B.

J. C. McLennan and A. B. McLay, Trans. Roy. Soc. Can. 21, 63 (1927).

McLennan, J. C.

J. C. McLennan and A. B. McLay, Trans. Roy. Soc. Can. 21, 63 (1927).

Moore, Charlotte E.

Charlotte E. Moore, "Atomic energy levels," Natl. Bur. Standards (U.S.) Circ. No. 467, (1949), Vol. I.

Racah, G.

G. Racah, Proc..Rydberg Centennial Confer. on Atomic Spectroscopy (July, 1954).

G. Racah, Phys. Rev. 61, 537 (L) (1942).

Robinson, Howard A.

Howard A. Robinson, Phys. Rev. 49, 297 (1936).

Saltmarsh, M. O.

M. O. Saltmarsh, Phil. Mag. 47, 874 (1924).

Shortley, G. H.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, 1951), Chap. VII and Chap. XI.

Tsien, W.-Z.

W.-Z. Tsien, Chinese J. Phys. 3, No. 2, 136 (1939).

Yamanouchi, T.

T. Yamanouchi, Proc. Phys.-Math. Soc. Japan 18, 16 (1936).

Natl. Bur. Standards (U.S.) Circ. No. 467 (1)

Charlotte E. Moore, "Atomic energy levels," Natl. Bur. Standards (U.S.) Circ. No. 467, (1949), Vol. I.

Other (13)

W.-Z. Tsien, Chinese J. Phys. 3, No. 2, 136 (1939).

I. S. Bowen, Phys. Rev. 46, 791 (1934).

T. L. de Bruin, Physica III, 8, 809 (1936).

C. C. Kiess, Bur. Standards J. Research 8, 393 (1932).

Howard A. Robinson, Phys. Rev. 49, 297 (1936).

I. S. Bowen, Phys. Rev. 29, 510 (1927).

P. Geuter, Z. wiss. Phot. 5, 1 (1907).

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, 1951), Chap. VII and Chap. XI.

G. Racah, Phys. Rev. 61, 537 (L) (1942).

M. O. Saltmarsh, Phil. Mag. 47, 874 (1924).

J. C. McLennan and A. B. McLay, Trans. Roy. Soc. Can. 21, 63 (1927).

G. Racah, Proc..Rydberg Centennial Confer. on Atomic Spectroscopy (July, 1954).

T. Yamanouchi, Proc. Phys.-Math. Soc. Japan 18, 16 (1936).

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