https://doi.org/10.1007/s100530050208
Radiative lifetimes of excited W II levels
Institut für Atom- und Molekülphysik, Abt. Plasmaphysik,
Universität Hannover, Callinstr. 38, 30167 Hannover, Germany
Corresponding author: a kock@pmp.uni-hannover.de
Received:
30
July
1998
Revised:
18
August
1998
Published online: 15 December 1998
Radiative lifetimes of 19 selected W II levels with energies between 36 000 cm-1 and 55 000 cm-1 have been measured with the time-resolved laser-induced fluorescence technique. The ions are generated in a hollow cathode discharge and stored in a linear Paul trap. Selected states are populated with tunable dye laser pulses and the subsequent fluorescence is measured by means of a 5 Gigasample transient digitizer and a fast photodetector with a risetime of 700 ps. By taking into account both the temporal profile of the laser pulses and the separately measured response function of the system, the lifetime can be determined from the full decay curve. A refined evaluation procedure, taking into account saturation effects in the signals, reduces the uncertainty in our data to around 1% .
PACS: 32.50.+d – Fluorescence; phosphorescence (including quenching) / 32.80.Pj – Optical cooling of atoms; trapping
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
