Scientific Results

Precision measurement of the isotope shift of the 2 S-3(1)-3 P-3(0)transition in Helium

Year: 1994

Authors: Marin F., Minardi F., Pavone FS., Inguscio M.

Autors Affiliation: Dipartimento di Fisica and European
Laboratory for Non-linear Spectroscopy (LENS), Largo E. Fermi 2, 50125 Florence, Italy

Abstract: A heterodyne spectroscopic scheme, using only one laser tuned to the atomic wavelength, is applied to the measurement of the He-3(F = 1/2-1/2 component)He-4 separation for the 2 S-3(1) – P-3(0) transition at 389 nm. The experimental result is 45 394 425(137) kHz and the isotope shift deduced in the absence of hyperfine structure is 42 184 180(139) kHz. A new value of the He-3 nuclear charge radius is obtained, [r2]1/2 = 1.923(36) fm, in a regime of low energy and momentum transfer.

Journal/Review: PHYSICAL REVIEW A

Volume: 49 (3)      Pages from: R1523  to: R1526

KeyWords: Electromagnetic structure; HE-3; States
DOI: 10.1103/PhysRevA.49.R1523

Citations: 13
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