Hyperfine structure of excited, odd-parity levels in <sup>139</sup>La by laser–atomic-beam fluorescence

W. J. Childs; L. S. Goodman

doi:10.1364/JOSA.68.001348

Hyperfine structure of excited, odd-parity levels in ¹³⁹La by laser–atomic-beam fluorescence

W. J. Childs and L. S. Goodman

Journal of the Optical Society of America
Vol. 68,
Issue 10,
pp. 1348-1350
(1978)
•https://doi.org/10.1364/JOSA.68.001348

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W. J. Childs and L. S. Goodman, "Hyperfine structure of excited, odd-parity levels in ¹³⁹La by laser–atomic-beam fluorescence," J. Opt. Soc. Am. 68, 1348-1350 (1978)

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History
- Original Manuscript: July 3, 1978
- Published: October 1, 1978

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Abstract

Dipole and quadrupole hyperfine structure constants are reported for a number of excited, odd-parity levels of ¹³⁹La. The results were obtained by analysis of the fluorescence induced from a lanthanum atomic beam by a single-frequency dye laser beam.

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Excitation energy (cm⁻¹)	Wavelength used (Å)	Configuration	State αSLJ	Hyperfine constants (MHz)
Excitation energy (cm⁻¹)	Wavelength used (Å)	Configuration	State αSLJ	A (M1)	B (E2)
16 857	5930.68	dsp	$y {{}^{2}F}_{5 / 2}^{0}$	262.5 ± 0.3	64 ± 6
17 910	5930.62	dsp	$y {{}^{2}F}_{7 / 2}^{0}$	279.4 ± 0.3	86 ± 6
17 947	5917	d²p	$z {{}^{4}G}_{5 / 2}^{0}$	539.9 ± 0.8	43 ± 10
18 604	5696	d²p	$z {{}^{4}G}_{7 / 2}^{0}$	218.8 ±0.5	72 ± 10
20 019	5761	dsp	$y {{}^{2}P}_{3 / 2}^{0}$	−41.0 ± 0.3	3 ± 3
20 083	5740	d²p	$y {{}^{4}F}_{3 / 2}^{0}$	87.0 ± 0.5	−2 ± 4
20 338	5769	d²p	$y {{}^{4}F}_{5 / 2}^{0}$	259.2 ± 0.4	−10 ± 6
20 763	5789	d²p	$y {{}^{4}F}_{7 / 2}^{0}$	196.2 ± 0.3	−4 ± 3
20 972	5720	d²p	$x {{}^{2}F}_{5 / 2}^{0}$	−66.4 ± 0.3	35 ± 3
21 384	5791	d²p	$y {{}^{4}F}_{9 / 2}^{0}$	93.4 ± 0.3	−13 ± 6
21 663	5699	d²p	$x {{}^{2}F}_{7 / 2}^{0}$	283.5 ± 0.3	55 ± 5

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