TY - JOUR
T1 - Absolute frequency measurement of the 2S-8S/D transitions in hydrogen and deuterium
T2 - New determination of the rydberg constant
AU - De Beauvoir, B.
AU - Nez, F.
AU - Julien, L.
AU - Cagnac, B.
AU - Biraben, F.
AU - Touahri, D.
AU - Hilico, L.
AU - Acef, O.
AU - Clairon, A.
AU - Zondy, J. J.
PY - 1997/1/20
Y1 - 1997/1/20
N2 - We have performed a pure optical frequency measurement of the 2S-8S/D two-photon transitions in atomic hydrogen and deuterium. These frequencies are directly compared to a new frequency standard, a diode laser stabilized to a two-photon transition at 778 nm in rubidium. We deduce a new value for the Rydberg constant, R∞ = 109 737.315 685 9(10) cm−1 with an uncertainty of 9×10−12. From the isotope shift, we derive a precise value of the 2S Lamb shift in deuterium [L2S-2P = 1059.230(9) MHz] and the difference of the quadratic charge radii of deuteron and proton.
AB - We have performed a pure optical frequency measurement of the 2S-8S/D two-photon transitions in atomic hydrogen and deuterium. These frequencies are directly compared to a new frequency standard, a diode laser stabilized to a two-photon transition at 778 nm in rubidium. We deduce a new value for the Rydberg constant, R∞ = 109 737.315 685 9(10) cm−1 with an uncertainty of 9×10−12. From the isotope shift, we derive a precise value of the 2S Lamb shift in deuterium [L2S-2P = 1059.230(9) MHz] and the difference of the quadratic charge radii of deuteron and proton.
UR - http://www.scopus.com/inward/record.url?scp=0001595265&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001595265&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.78.440
DO - 10.1103/PhysRevLett.78.440
M3 - Article
AN - SCOPUS:0001595265
VL - 78
SP - 440
EP - 443
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
ER -