6533b82bfe1ef96bd128d510
RESEARCH PRODUCT
Oscillator strengths of sulphur 3s23p34s3So-3s23p34p3P transitions measured by time resolved two-photon laser spectroscopy
Sune SvanbergU. BerzinshR ZerneL Caiyansubject
Materials scienceTwo-photon excitation microscopyThermalPlasmaAtomic physicsCondensed Matter PhysicsAbsorption (electromagnetic radiation)SpectroscopyFluorescenceMathematical PhysicsAtomic and Molecular Physics and OpticsBeam (structure)Excitationdescription
Oscillator strengths for the three 3s23p34s 3S1o-3s23p34p 3P0,1,2 transitions in neutral sulphur have been determined directly from lifetime measurements. Two-photon UV laser excitation and subsequent fluorescence detection have been used on atoms produced in a thermal sulphur beam or in a laser-driven plasma. A good agreement was found between data obtained in both schemes. The lifetime data obtained, τ(3P0) = 46.1(1.0) ns, τ(3P1) = 46.1(1.0) ns and τ(3P2) = 46.1(1.0) ns are compared with results of theoretical and experimental data from literature. The absorption oscillator strengths derived are f(3S1o-3P0) = 0.120(0.003), f(3S1o-3P1) = 0.360(0.008) and f(3S1o-3P2) = 0.600(0.013), respectively. For the next higher member of the series, 3s23p35p 3P1,2, a substantially longer lifetime, 188(13) ns, was obtained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-11-01 | Physica Scripta |