Abstract

The first six members of the 6s 2ng series of Pbii were fitted to a polarization formula, from which the series limit was determined to be 121 245.14 ± 0.05 cm−1. This value is in good agreement with that determined from the same series by an extended Ritz formula, as is also the case with the nf, ng, and nh series of Mgii, the nf series of Csi, and the ng series of Pbi. The polarization parameters empirically determined from the ng series of Pbii were used to predict level values for the nh series, six members of which were subsequently found.

© 1976 Optical Society of America

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References

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  1. D. R. Wood, C. B. Ross, P. S. Scholl, and M. L. Hoke, J. Opt. Soc. Am. 64, 1159 (1974).
    [CrossRef]
  2. K. Bockasten, Ark. Fys. 10, 567 (1956).
  3. H. Kleiman, J. Opt. Soc. Am. 52, 441 (1962).
    [CrossRef]
  4. D. R. Wood, Ph.D. Thesis, Purdue University (1967).
  5. I. Waller, Z. Phys. 38, 635 (1926).
    [CrossRef]
  6. J. H. Van Vleck, Proc. R. Soc. London, Ser. A 143, 679 (1934).
    [CrossRef]
  7. B. Edlén, Handbuch der Physik, Vol. 27, edited by S. Flügge (Springer, Berlin, 1964) p. 187.
  8. B. Edlén, in Ref. 7, p. 127.

1974 (1)

1962 (1)

1956 (1)

K. Bockasten, Ark. Fys. 10, 567 (1956).

1934 (1)

J. H. Van Vleck, Proc. R. Soc. London, Ser. A 143, 679 (1934).
[CrossRef]

1926 (1)

I. Waller, Z. Phys. 38, 635 (1926).
[CrossRef]

Bockasten, K.

K. Bockasten, Ark. Fys. 10, 567 (1956).

Edlén, B.

B. Edlén, Handbuch der Physik, Vol. 27, edited by S. Flügge (Springer, Berlin, 1964) p. 187.

B. Edlén, in Ref. 7, p. 127.

Hoke, M. L.

Kleiman, H.

Ross, C. B.

Scholl, P. S.

Van Vleck, J. H.

J. H. Van Vleck, Proc. R. Soc. London, Ser. A 143, 679 (1934).
[CrossRef]

Waller, I.

I. Waller, Z. Phys. 38, 635 (1926).
[CrossRef]

Wood, D. R.

Ark. Fys. (1)

K. Bockasten, Ark. Fys. 10, 567 (1956).

J. Opt. Soc. Am. (2)

Proc. R. Soc. London, Ser. A (1)

J. H. Van Vleck, Proc. R. Soc. London, Ser. A 143, 679 (1934).
[CrossRef]

Z. Phys. (1)

I. Waller, Z. Phys. 38, 635 (1926).
[CrossRef]

Other (3)

D. R. Wood, Ph.D. Thesis, Purdue University (1967).

B. Edlén, Handbuch der Physik, Vol. 27, edited by S. Flügge (Springer, Berlin, 1964) p. 187.

B. Edlén, in Ref. 7, p. 127.

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Figures (2)

FIG. 1
FIG. 1

Graphical determination of the series limit of Pbii from the ng series. The correct series limit should give a straight line according to the polarization formula.

FIG. 2
FIG. 2

The polarization formula applied to hydrogenlike terms of Pbii. The straight line is the least squares fit to the ng levels.

Tables (2)

Tables Icon

TABLE I Series limits derived from the polarization formula and from the extended Ritz formula.

Tables Icon

TABLE II nh level values of Pbii and transitions to 5g.

Equations (8)

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T n 0 = Z 2 R n 2 [ 1 + α 2 Z 2 n 2 ( n l + 1 2 - 3 4 ) ] ,
T n = T n 0 = A ϕ ( n , l ) + B ψ ( n , l ) .
ϕ ( n , l ) = a 0 4 r - 4 / Z 4 ,
ψ ( n , l ) = a 0 6 r - 6 / Z 6 .
r - 4 = Z 4 [ 3 n 2 - l ( l + 1 ) ] 2 a 0 4 n 5 ( l - 1 2 ) l ( l + 1 2 ) ( l + 1 ) ( l + 3 2 ) .
r - 6 = Z 6 { 35 n 4 - 5 n 2 [ 6 l ( l + 1 ) - 5 ] + 3 ( l - 1 ) l ( l + 1 ) ( l + 2 ) } 8 a 0 6 n 7 ( l - 3 2 ) ( l - 1 ) ( l - 1 2 ) l ( l + 1 2 ) ( l + 1 ) ( l + 3 2 ) ( l + 2 ) ( l + 5 2 ) .
A = R α d Z 4 / a 0 3 ,             B = R α q Z 6 / a 0 5 ,
( T n - T n 0 ) / ϕ = A + B ( ψ / ϕ ) ,