Magnetic-field induced enhancement in the fluorescence yield spectrum of doubly excited states in helium.
An influence of static magnetic fields on the fluorescence yield spectrum of He in the vicinity of the N = 2 thresholds has been observed. The experimental results are in excellent agreement with predictions based on multichannel quantum defect theory, and it is demonstrated that the Rydberg electron l mixing due to the diamagnetic interaction is essential for the description of the observed fluorescence yield intensity enhancement.
Ström
Magnus
M
Department of Physics, Uppsala University, Box 530, S-75121 Uppsala, Sweden.
Såthe
Conny
C
Agåker
Marcus
M
Söderström
Johan
J
Rubensson
Jan-Erik
JE
Stranges
Stefano
S
Richter
Robert
R
Alagia
Michele
M
Gorczyca
T W
TW
Robicheaux
F
F