Abstract

Exposures to the yttrium arc in silver, burned in the Bitter electromagnet at fields of 85,000 oersteds, yielded interpretable Zeeman effects of the first three spectra of yttrium—Yt I, Yt II, Yt III. Zeeman patterns arising from transitions between energy states of the doubly-ionized atom were observed in the range 2950–2360A. Landé g factors were calculated for the 4d, 5s, and 5p energy levels. Magnetic splitting of lines in the first spark spectrum of yttrium permitted the determination of g values for 59 of the 61 known energy levels. Zeeman effects of the arc lines of yttrium were observed for lines of high intensity only. Inclusion of data of B. E. Moore and of W. F. Meggers gave fairly complete information of the Zeeman effects of Yt I. Over-all g sums pertaining to the singly-ionized atom verify the g-sum rule exceptionally well in spite of large variations of individual g values from the theoretical Ls values. Term classifications were verified in the majority of cases.

© 1945 Optical Society of America

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References

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    [Crossref]
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  6. J. M. Eder and E. Valenta, Kaiser Acad. Wiss. Wien, Berlin 199, 9 and 519 (1910).
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    [Crossref]
  11. A. S. King and E. Carter, Astrophys. J. 65, 86 (1927).
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    [Crossref]
  14. S. Popow, Ann. d. Physik 45, 163 (1914).
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  17. W. F. Meggers, J. Wash. Acad. Sci. 14, 427 (1924).
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    [Crossref]
  20. I. S. Bowen and R. A. Millikan, Phys. Rev. 28, 923 (1926).
    [Crossref]
  21. W. F. Meggers and H. N. Russell, J. Research Nat. Bur. Stand. 2, 733 (1929) (RP 55).
  22. G. R. Harrison and F. Bitter, Phys. Rev. 57, 15 (1940).
    [Crossref]
  23. G. R. Harrison and J. R. McNally, Phys. Rev. 58, 703 (1940).
    [Crossref]
  24. G. R. Harrison, J. Opt. Soc. Am. 25, 169 (1935); Rev. Sci. Inst. 9, 15 (1938); G. R. Harrison and J. P. Molnar, J. Opt. Soc. Am. 33, 43 (1940).
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  26. R. M. Langer, Phys. Rev. 35, 649 (1930).
    [Crossref]

1941 (1)

1940 (2)

G. R. Harrison and F. Bitter, Phys. Rev. 57, 15 (1940).
[Crossref]

G. R. Harrison and J. R. McNally, Phys. Rev. 58, 703 (1940).
[Crossref]

1935 (1)

1930 (1)

R. M. Langer, Phys. Rev. 35, 649 (1930).
[Crossref]

1929 (1)

W. F. Meggers and H. N. Russell, J. Research Nat. Bur. Stand. 2, 733 (1929) (RP 55).

1928 (1)

W. F. Meggers, Bur. Stand. J. Research 1, 319 (1928) (RP12).
[Crossref]

1927 (1)

A. S. King and E. Carter, Astrophys. J. 65, 86 (1927).
[Crossref]

1926 (2)

I. S. Bowen and R. A. Millikan, Phys. Rev. 28, 923 (1926).
[Crossref]

W. F. Meggers and C. C. Kiess, J. Opt. Soc. Am. 12, 417 (1926).
[Crossref]

1925 (1)

W. F. Meggers and B. E. Moore, J. Wash. Acad. Sci. 15, 207 (1925).

1924 (1)

W. F. Meggers, J. Wash. Acad. Sci. 14, 427 (1924).

1922 (1)

1921 (1)

C. C. Kiess, B. S. Hopkins, and H. C. Kremers, Sci. Pap. Bur. Stand. 17, 318 (1921) (No. 421).

1916 (1)

J. M. Eder, Kaiser Acad. Wiss. Wien, Berlin 125, 383 (1916).

1915 (1)

E. Paulson, Astrophys. J. 41, 72 (1915).
[Crossref]

1914 (2)

S. Popow, Ann. d. Physik 45, 163 (1914).

E. Paulson, Ann. d. Physik 45, 429 (1914).

1910 (1)

J. M. Eder and E. Valenta, Kaiser Acad. Wiss. Wien, Berlin 199, 9 and 519 (1910).

1909 (1)

G. Eberhard, Zeits. f. wiss. Phot. 7, 245 (1909).

1908 (1)

B. E. Moore, Astrophys. J. 28, 1 (1908); Ann. d. Physik 25, 309 (1908).
[Crossref]

1903 (1)

H. Kayser, Abhandl. Berl. Acad. 30, 633 (1903).

Albertson, W. E.

Bitter, F.

G. R. Harrison and F. Bitter, Phys. Rev. 57, 15 (1940).
[Crossref]

Bowen, I. S.

I. S. Bowen and R. A. Millikan, Phys. Rev. 28, 923 (1926).
[Crossref]

Carter, E.

A. S. King and E. Carter, Astrophys. J. 65, 86 (1927).
[Crossref]

Eberhard, G.

G. Eberhard, Zeits. f. wiss. Phot. 7, 245 (1909).

Eder, J. M.

J. M. Eder, Kaiser Acad. Wiss. Wien, Berlin 125, 383 (1916).

J. M. Eder and E. Valenta, Kaiser Acad. Wiss. Wien, Berlin 199, 9 and 519 (1910).

Exner, F.

F. Exner and E. Haschek, Die Spektren der Elemente (Franz Deuticke, Leipzig, 1911, 1912).

F. Exner and E. Haschek, Wellenlangentabellen (Franz Deuticke, Leipzig, 1902).

Harrison, G. R.

Haschek, E.

F. Exner and E. Haschek, Wellenlangentabellen (Franz Deuticke, Leipzig, 1902).

F. Exner and E. Haschek, Die Spektren der Elemente (Franz Deuticke, Leipzig, 1911, 1912).

Hopkins, B. S.

L. F. Yntema and B. S. Hopkins, J. Opt. Soc. Am. 6, 121 (1922).
[Crossref]

C. C. Kiess, B. S. Hopkins, and H. C. Kremers, Sci. Pap. Bur. Stand. 17, 318 (1921) (No. 421).

Hosford, N. F.

Kayser, H.

H. Kayser, Abhandl. Berl. Acad. 30, 633 (1903).

H. Kayser, Handbuch der Spectroscopie (S. Hirzel, Leipzig, 1912) Volume VI.

Kiess, C. C.

W. F. Meggers and C. C. Kiess, J. Opt. Soc. Am. 12, 417 (1926).
[Crossref]

C. C. Kiess, B. S. Hopkins, and H. C. Kremers, Sci. Pap. Bur. Stand. 17, 318 (1921) (No. 421).

King, A. S.

A. S. King and E. Carter, Astrophys. J. 65, 86 (1927).
[Crossref]

Kremers, H. C.

C. C. Kiess, B. S. Hopkins, and H. C. Kremers, Sci. Pap. Bur. Stand. 17, 318 (1921) (No. 421).

Langer, R. M.

R. M. Langer, Phys. Rev. 35, 649 (1930).
[Crossref]

McNally, J. R.

G. R. Harrison and J. R. McNally, Phys. Rev. 58, 703 (1940).
[Crossref]

Meggers, W. F.

W. F. Meggers and H. N. Russell, J. Research Nat. Bur. Stand. 2, 733 (1929) (RP 55).

W. F. Meggers, Bur. Stand. J. Research 1, 319 (1928) (RP12).
[Crossref]

W. F. Meggers and C. C. Kiess, J. Opt. Soc. Am. 12, 417 (1926).
[Crossref]

W. F. Meggers and B. E. Moore, J. Wash. Acad. Sci. 15, 207 (1925).

W. F. Meggers, J. Wash. Acad. Sci. 14, 427 (1924).

Millikan, R. A.

I. S. Bowen and R. A. Millikan, Phys. Rev. 28, 923 (1926).
[Crossref]

Moore, B. E.

W. F. Meggers and B. E. Moore, J. Wash. Acad. Sci. 15, 207 (1925).

B. E. Moore, Astrophys. J. 28, 1 (1908); Ann. d. Physik 25, 309 (1908).
[Crossref]

Paulson, E.

E. Paulson, Astrophys. J. 41, 72 (1915).
[Crossref]

E. Paulson, Ann. d. Physik 45, 429 (1914).

Popow, S.

S. Popow, Ann. d. Physik 45, 163 (1914).

Russell, H. N.

W. F. Meggers and H. N. Russell, J. Research Nat. Bur. Stand. 2, 733 (1929) (RP 55).

Valenta, E.

J. M. Eder and E. Valenta, Kaiser Acad. Wiss. Wien, Berlin 199, 9 and 519 (1910).

Yntema, L. F.

Abhandl. Berl. Acad. (1)

H. Kayser, Abhandl. Berl. Acad. 30, 633 (1903).

Ann. d. Physik (2)

S. Popow, Ann. d. Physik 45, 163 (1914).

E. Paulson, Ann. d. Physik 45, 429 (1914).

Astrophys. J. (3)

E. Paulson, Astrophys. J. 41, 72 (1915).
[Crossref]

A. S. King and E. Carter, Astrophys. J. 65, 86 (1927).
[Crossref]

B. E. Moore, Astrophys. J. 28, 1 (1908); Ann. d. Physik 25, 309 (1908).
[Crossref]

Bur. Stand. J. Research (1)

W. F. Meggers, Bur. Stand. J. Research 1, 319 (1928) (RP12).
[Crossref]

J. Opt. Soc. Am. (4)

J. Research Nat. Bur. Stand. (1)

W. F. Meggers and H. N. Russell, J. Research Nat. Bur. Stand. 2, 733 (1929) (RP 55).

J. Wash. Acad. Sci. (2)

W. F. Meggers, J. Wash. Acad. Sci. 14, 427 (1924).

W. F. Meggers and B. E. Moore, J. Wash. Acad. Sci. 15, 207 (1925).

Kaiser Acad. Wiss. Wien, Berlin (2)

J. M. Eder and E. Valenta, Kaiser Acad. Wiss. Wien, Berlin 199, 9 and 519 (1910).

J. M. Eder, Kaiser Acad. Wiss. Wien, Berlin 125, 383 (1916).

Phys. Rev. (4)

I. S. Bowen and R. A. Millikan, Phys. Rev. 28, 923 (1926).
[Crossref]

G. R. Harrison and F. Bitter, Phys. Rev. 57, 15 (1940).
[Crossref]

G. R. Harrison and J. R. McNally, Phys. Rev. 58, 703 (1940).
[Crossref]

R. M. Langer, Phys. Rev. 35, 649 (1930).
[Crossref]

Sci. Pap. Bur. Stand. (1)

C. C. Kiess, B. S. Hopkins, and H. C. Kremers, Sci. Pap. Bur. Stand. 17, 318 (1921) (No. 421).

Zeits. f. wiss. Phot. (1)

G. Eberhard, Zeits. f. wiss. Phot. 7, 245 (1909).

Other (4)

H. Kayser, Handbuch der Spectroscopie (S. Hirzel, Leipzig, 1912) Volume VI.

F. Exner and E. Haschek, Die Spektren der Elemente (Franz Deuticke, Leipzig, 1911, 1912).

F. Exner and E. Haschek, Wellenlangentabellen (Franz Deuticke, Leipzig, 1902).

M. I. T. Wavelength Tables, G. R. Harrison, Editor (John Wiley and Sons, Inc., New York, 1939).

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Figures (2)

Fig. 1
Fig. 1

Diagram of experimental set-up used in Zeeman effect investigations. All gratings in simultaneous operation (first and second orders).

Fig. 2
Fig. 2

Zeeman effects of yttrium lines at 3200A. Top—exposure to p polarization; middle—zero field exposure; bottom—exposure to n polarization.

Tables (7)

Tables Icon

Table I Zeeman effects of Yt III.

Tables Icon

Table II Zeeman effects of Yt II.

Tables Icon

Table III Zeeman effects of Yt I.

Tables Icon

Table VII g sums for Yt II.

Equations (1)

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Δ g min . = 2.142 × 10 12 R H λ ,