Abstract

Data are presented on the wavelengths of 97 lines of <sup>208</sup>Po and on the hyperfine structure of 31 lines of <sup>209</sup>Po. From these data, relative values of 26 energy levels of <sup>208</sup>Po I have been deduced. The hyperfinestructure splittings of 14 of these levels in <sup>209</sup>Po have been determined. Some tentative identifications of the levels have been made, based on a determination of the absolute value of the fundamental level 6<i>p</i><sup>4 3</sup><i>P</i><sub>2</sub>′ by application of a Ritz formula to three levels taken as 6<i>p</i><sup>3</sup>(<sup>4</sup><i>S</i>)<i>np</i><sup>5</sup><i>P</i><sub>3</sub>′, <i>n</i>=7,8,9. The ionization potential of <sup>208</sup>Po has been tentatively estimated as 8.41<sub>4</sub> V. From the measured splittings of the energy levels of the configuration 6<i>p</i><sup>4</sup> of <sup>209</sup>Po I, the nuclear magnetic moment of <sup>209</sup>Po is estimated to be 0.7<sub>6</sub> nm. Mrozowski’s identifications of some lines of Po I are examined. It is found that his identifications of the 4611 Å and 5940 Å lines are confirmed by coincidence of frequencies and by hyperfine-structure patterns, but that his identifications of the other lines and his determination of 6<i>p</i><sup>4</sup><sup>1</sup><i>S</i><sub>0</sub>′ could not be confirmed by the data of this investigation.

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  1. K. L. Vander Sluis and P. M. Griffin, J. Opt. Soc. Am. 45, 1087(L) (1955).
  2. S. Mrozowski, J. Opt. Soc. Am. 46, 663L (1956).
  3. G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).
  4. K. Burns, K. B. Adams, and Jean Longwell, J. Opt. Soc. Am. 40, 339 (1950).
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  6. H. N. Russell, J. Opt. Soc. Am. 40, 618 (1950).
  7. B. Edlén, "Atomic Spectra," in Handbuch der Physik (Springer-Verlag, Berlin, 1964), 27, 124.
  8. W. Finkelnburg and F. Stern, Phys. Rev. 77, 303 (1950).
  9. S. Goudsmit, Phys. Rev. 43, 636 (1933).
  10. S. Goudsmit, Phys. Rev. 37, 663 (1931).
  11. G. Breit and L. A. Wills, Phys. Rev. 44, 470 (1933).
  12. R. G. Barnes and W. V. Smith, Phys. Rev. 93, 95 (1954).
  13. A. L. Schawlow, J. N. P. Hume, and M. F. Crawford, Phys. Rev. 76, 1876 (1949).
  14. F. M. Kelly, "Determination of Nuclear Spins and Magnetic Moments," in Handbuch der Physik (Springer-Verlag, Berlin, 1958), 38 (1), 73, 74.
  15. P. F. A. Klinkenberg, Rev. Mod. Phys. 24, 71 (1952).
  16. R. J. Blin-Stoyle, Rev. Mod. Phys. 28, 85 (1956).
  17. R. H. Garstang, J. Res. Natl. Bur. Std. (U.S.) 68A, 61 (1964).

Adams, K. B.

K. Burns, K. B. Adams, and Jean Longwell, J. Opt. Soc. Am. 40, 339 (1950).

Barnes, R. G.

R. G. Barnes and W. V. Smith, Phys. Rev. 93, 95 (1954).

Blin-Stoyle, R. J.

R. J. Blin-Stoyle, Rev. Mod. Phys. 28, 85 (1956).

Breit, G.

G. Breit and L. A. Wills, Phys. Rev. 44, 470 (1933).

Burns, K.

K. Burns, K. B. Adams, and Jean Longwell, J. Opt. Soc. Am. 40, 339 (1950).

Charles, G. W.

G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).

Crawford, M. F.

A. L. Schawlow, J. N. P. Hume, and M. F. Crawford, Phys. Rev. 76, 1876 (1949).

Edlén, B.

B. Edlén, "Atomic Spectra," in Handbuch der Physik (Springer-Verlag, Berlin, 1964), 27, 124.

B. Edlén, J. Opt. Soc. Am. 43, 339 (1953).

Finkelnburg, W.

W. Finkelnburg and F. Stern, Phys. Rev. 77, 303 (1950).

Garstang, R. H.

R. H. Garstang, J. Res. Natl. Bur. Std. (U.S.) 68A, 61 (1964).

Goudsmit, S.

S. Goudsmit, Phys. Rev. 37, 663 (1931).

S. Goudsmit, Phys. Rev. 43, 636 (1933).

Griffin, P. M.

K. L. Vander Sluis and P. M. Griffin, J. Opt. Soc. Am. 45, 1087(L) (1955).

Hume, J. N. P.

A. L. Schawlow, J. N. P. Hume, and M. F. Crawford, Phys. Rev. 76, 1876 (1949).

Hunt, D. J.

G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).

Kelly, F. M.

F. M. Kelly, "Determination of Nuclear Spins and Magnetic Moments," in Handbuch der Physik (Springer-Verlag, Berlin, 1958), 38 (1), 73, 74.

Klinkenberg, P. F. A.

P. F. A. Klinkenberg, Rev. Mod. Phys. 24, 71 (1952).

Longwell, Jean

K. Burns, K. B. Adams, and Jean Longwell, J. Opt. Soc. Am. 40, 339 (1950).

Mrozowski, S.

S. Mrozowski, J. Opt. Soc. Am. 46, 663L (1956).

Pish, G.

G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).

Russell, H. N.

H. N. Russell, J. Opt. Soc. Am. 40, 618 (1950).

Schawlow, A. L.

A. L. Schawlow, J. N. P. Hume, and M. F. Crawford, Phys. Rev. 76, 1876 (1949).

Smith, W. V.

R. G. Barnes and W. V. Smith, Phys. Rev. 93, 95 (1954).

Stern, F.

W. Finkelnburg and F. Stern, Phys. Rev. 77, 303 (1950).

Timma, D. L.

G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).

Vander Sluis, K. L.

K. L. Vander Sluis and P. M. Griffin, J. Opt. Soc. Am. 45, 1087(L) (1955).

Wills, L. A.

G. Breit and L. A. Wills, Phys. Rev. 44, 470 (1933).

Other (17)

K. L. Vander Sluis and P. M. Griffin, J. Opt. Soc. Am. 45, 1087(L) (1955).

S. Mrozowski, J. Opt. Soc. Am. 46, 663L (1956).

G. W. Charles, D. J. Hunt, G. Pish, and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).

K. Burns, K. B. Adams, and Jean Longwell, J. Opt. Soc. Am. 40, 339 (1950).

B. Edlén, J. Opt. Soc. Am. 43, 339 (1953).

H. N. Russell, J. Opt. Soc. Am. 40, 618 (1950).

B. Edlén, "Atomic Spectra," in Handbuch der Physik (Springer-Verlag, Berlin, 1964), 27, 124.

W. Finkelnburg and F. Stern, Phys. Rev. 77, 303 (1950).

S. Goudsmit, Phys. Rev. 43, 636 (1933).

S. Goudsmit, Phys. Rev. 37, 663 (1931).

G. Breit and L. A. Wills, Phys. Rev. 44, 470 (1933).

R. G. Barnes and W. V. Smith, Phys. Rev. 93, 95 (1954).

A. L. Schawlow, J. N. P. Hume, and M. F. Crawford, Phys. Rev. 76, 1876 (1949).

F. M. Kelly, "Determination of Nuclear Spins and Magnetic Moments," in Handbuch der Physik (Springer-Verlag, Berlin, 1958), 38 (1), 73, 74.

P. F. A. Klinkenberg, Rev. Mod. Phys. 24, 71 (1952).

R. J. Blin-Stoyle, Rev. Mod. Phys. 28, 85 (1956).

R. H. Garstang, J. Res. Natl. Bur. Std. (U.S.) 68A, 61 (1964).

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