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

Full Article  |  PDF Article
OSA Recommended Articles
Zeeman Effect Data and Further Classification of the First Spark Spectrum of Cerium—Ce II

George R. Harrison, Walter E. Albertson, and Norman F. Hosford
J. Opt. Soc. Am. 31(6) 439-448 (1941)

First Spark Spectrum of Thorium—Classification and Zeeman Effect Data of Th II

J. Rand McNally, George R. Harrison, and Helen B. Park
J. Opt. Soc. Am. 32(6) 334-347 (1942)

Zeeman Effect Data for the Spectra of Lanthanum—La I and La II

George R. Harrison, Nathan Rosen, and J. Rand McNally
J. Opt. Soc. Am. 35(10) 658-669 (1945)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (7)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription