TY - JOUR
T1 - Wavelength calibration of the CI line at 94.5 nm for comparison with quasar data
AU - Labazan, I.
AU - Reinhold, E.M.
AU - Ubachs, W.M.G.
AU - Flambaum, V.V.
PY - 2005
Y1 - 2005
N2 - With the use of an ultra-narrow-band extreme ultraviolet laser source, tunable near 94 nm, transition wavelengths are determined for lines connecting the 1s22s22p2 P0,1,23 ground-term levels to the 1s22s2p3 S13 excited level in neutral carbon at an absolute accuracy of 4×10-8. With the determination of the zero-velocity rest-frame wavelengths these lines can be included in an analysis of a possible temporal variation of the fine-structure constant α from a comparison with quasar data. A value for the C12/C13 transition isotope shift was also obtained yielding 0.5107(13)cm-1, in average over the three fine-structure lines. The latter measurement will allow to study isotopic evolution in the universe and test models of nuclear processes in stars. © 2005 The American Physical Society.
AB - With the use of an ultra-narrow-band extreme ultraviolet laser source, tunable near 94 nm, transition wavelengths are determined for lines connecting the 1s22s22p2 P0,1,23 ground-term levels to the 1s22s2p3 S13 excited level in neutral carbon at an absolute accuracy of 4×10-8. With the determination of the zero-velocity rest-frame wavelengths these lines can be included in an analysis of a possible temporal variation of the fine-structure constant α from a comparison with quasar data. A value for the C12/C13 transition isotope shift was also obtained yielding 0.5107(13)cm-1, in average over the three fine-structure lines. The latter measurement will allow to study isotopic evolution in the universe and test models of nuclear processes in stars. © 2005 The American Physical Society.
U2 - 10.1103/PhysRevA.71.040501
DO - 10.1103/PhysRevA.71.040501
M3 - Article
SN - 1050-2947
VL - 71
SP - 040501(R)
JO - Physical Review A. Atomic, Molecular and Optical Physics
JF - Physical Review A. Atomic, Molecular and Optical Physics
IS - 4
ER -