title: High-resolution laser spectroscopy on the negative osmium ion.
abstract: 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.
authors.affiliation: Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany. u.warring@mpi-hd.mpg.de
authors.forename: U
authors.initials: U
authors.lastname: Warring
authors.forename: M
authors.initials: M
authors.lastname: Amoretti
authors.forename: C
authors.initials: C
authors.lastname: Canali
authors.forename: A
authors.initials: A
authors.lastname: Fischer
authors.forename: R
authors.initials: R
authors.lastname: Heyne
authors.forename: J O
authors.initials: JO
authors.lastname: Meier
authors.forename: Ch
authors.initials: Ch
authors.lastname: Morhard
authors.forename: A
authors.initials: A
authors.lastname: Kellerbauer