Measurement of electric field strengths in a waveguide by means of the dynamic Stark effect in hydrogen and neutral helium spectral lines |
| |
Authors: | G Böhm G Himmel |
| |
Institution: | 1. Institut für Experimentalphysik, Lehrstuhl II, Ruhr-Universit?t, D-4630, Bochum, Fed. Rep. Germany
|
| |
Abstract: | The dynamic Stark effect of the spectral lines Hβ and of the neutral helium lines λ=402.6 nm (23
P
0−53
D) and λ=438.8 nm (21
P
0−51
D) emitted from a discharge tube was used for probing rf electric fields in a transverse waveguide. Calculations accounting
for the pertubation of the atomic states by strong unidirectional fields prove to be suitable in order to interprete the main
experimental results. If the waveguide is terminated with a metallic reflector and the plasma in the discharge tube becomes
overdense—then representing a slightly permeable mirror—a resonant enhancement of the electric field strength may be achieved
by tuning. This enhancement is well recognizable in the spectral line contours. |
| |
Keywords: | 32 60 +1 52 70 KZ |
本文献已被 SpringerLink 等数据库收录! |
|