Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1690-1692 |
| Journal | Physical Review Letters |
| Volume | 71 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1993 |
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1ST LASER EXCITATION OF THE HE-4 1(1)S-2(1)P RESONANCE LINE AT 58-NM. / Eikema, K.S.E.; Ubachs, W.M.G.; Vassen, W.; Hogervorst, W.
In: Physical Review Letters, Vol. 71, No. 11, 1993, p. 1690-1692.Research output: Contribution to Journal › Article › Academic › peer-review
TY - JOUR
T1 - 1ST LASER EXCITATION OF THE HE-4 1(1)S-2(1)P RESONANCE LINE AT 58-NM
AU - Eikema, K.S.E.
AU - Ubachs, W.M.G.
AU - Vassen, W.
AU - Hogervorst, W.
PY - 1993
Y1 - 1993
N2 - We have observed the 1 1S-2 1P resonance line of He4 at 58.4 nm (linewidth 0.3 cm-1) in a laser-atomic-beam experiment. The coherent radiation is produced by fifth-harmonic generation of UV light from a frequency-doubled, pulsed dye laser at 584 nm in a pulsed expansion of acetylene gas. The frequency of the fundamental radiation is calibrated against the iodine absorption spectrum, resulting in a transition frequency of 171 134.89(3) cm-1. From this value a Lamb shift for the ground state of +1.38(3) cm-1 is extracted, in good agreement with the theoretical value of +1.3745 cm-1 © 1993 The American Physical Society.
AB - We have observed the 1 1S-2 1P resonance line of He4 at 58.4 nm (linewidth 0.3 cm-1) in a laser-atomic-beam experiment. The coherent radiation is produced by fifth-harmonic generation of UV light from a frequency-doubled, pulsed dye laser at 584 nm in a pulsed expansion of acetylene gas. The frequency of the fundamental radiation is calibrated against the iodine absorption spectrum, resulting in a transition frequency of 171 134.89(3) cm-1. From this value a Lamb shift for the ground state of +1.38(3) cm-1 is extracted, in good agreement with the theoretical value of +1.3745 cm-1 © 1993 The American Physical Society.
U2 - 10.1103/PhysRevLett.71.1690
DO - 10.1103/PhysRevLett.71.1690
M3 - Article
VL - 71
SP - 1690
EP - 1692
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
ER -