(2+1) laser-induced fluorescence of spin-polarized hydrogen atoms.
We report the measurement of the spin polarization of hydrogen (SPH) atoms by (2+1) laser-induced fluorescence, produced via the photodissociation of thermal HBr molecules with circularly polarized 193 nm light. This scheme, which involves two-photon laser excitation at 205 nm and fluorescence at 656 nm, offers an experimentally simpler polarization-detection method than the previously reported vacuum ultraviolet detection scheme, allowing the detection of SPH atoms to be performed more straightforwardly, from the photodissociation of a wide range of molecules and from a variety of collision experiments.
Department of Physics, University of Crete, 71003 Heraklion, Crete, Greece.
Lykourgos
L
Bougas
Dimitris
D
Sofikitis
Michael A
MA
Everest
Andrew J
AJ
Alexander
T Peter
TP
Rakitzis