High-resolution laser spectroscopy on the negative osmium ion.
We have applied a combination of laser excitation and electric-field detachment to negative atomic ions for the first time, resulting in an enhancement of the excited-state detection efficiency for spectroscopy by at least 2 orders of magnitude. Applying the new method, a measurement of the bound-bound electric-dipole transition frequency in (192)Os- was performed using collinear spectroscopy with a narrow-bandwidth cw laser. The transition frequency was found to be 257.831 190(35) THz [wavelength 1162.747 06(16) nm, wave number 8600.3227(12) cm(-1)], in agreement with the only prior measurement, but with more than 100-fold higher precision.
Warring
U
U
Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany. u.warring@mpi-hd.mpg.de
Amoretti
M
M
Canali
C
C
Fischer
A
A
Heyne
R
R
Meier
J O
JO
Morhard
Ch
Ch
Kellerbauer
A
A