A heterodyne spectroscopic scheme, using only one laser tuned to the atomic wavelength, is applied to the measurement of the 3He(F=1/2-1/2 component)-4He separation for the 2 3S1–3 3P0 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 3He nuclear charge radius is obtained, 〈r2〉1/2=1.923(36) fm, in a regime of low energy and momentum transfer.
Precision measurement of the isotope shift of the 2 ^{3}S_{1}–3 ^{3}P_{0} transition in helium / F. Marin;F. Minardi;F. Pavone;M. Inguscio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 49:(1994), pp. R1523-R1526. [10.1103/PhysRevA.49.R1523]
Precision measurement of the isotope shift of the 2 ^{3}S_{1}–3 ^{3}P_{0} transition in helium
MARIN, FRANCESCO;MINARDI, FRANCESCO;PAVONE, FRANCESCO SAVERIO;INGUSCIO, MASSIMO
1994
Abstract
A heterodyne spectroscopic scheme, using only one laser tuned to the atomic wavelength, is applied to the measurement of the 3He(F=1/2-1/2 component)-4He separation for the 2 3S1–3 3P0 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 3He nuclear charge radius is obtained, 〈r2〉1/2=1.923(36) fm, in a regime of low energy and momentum transfer.
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