Volume 81, Number 6, March 2008
Article Number 68002
Number of page(s) 4
Section Interdisciplinary Physics and Related Areas of Science and Technology
Published online 25 February 2008
EPL, 81 (2008) 68002
DOI: 10.1209/0295-5075/81/68002

Nanosecond control and high-density production of spin-polarized hydrogen atoms

D. Sofikitis1, 2, L. Rubio-Lago2, A. J. Alexander3 and T. Peter Rakitzis1, 2

1  Department of Physics, University of Crete - 71003 Heraklion-Crete, Greece
2  Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas 71110 Heraklion-Crete, Greece
3  School of Chemistry, University of Edinburgh - West Mains Road, Edinburgh, EH9 3JJ, UK

received 11 December 2007; accepted in final form 27 January 2008; published March 2008
published online 25 February 2008

We demonstrate directly the nanosecond-timescale production of spin-polarized hydrogen (SPH) atoms from photodissociation of thermal HBr molecules, and the spin-state and Doppler-resolved detection using polarized fluorescence at 121.6 nm, without requiring hyperfine resolution. These techniques allow a variety of spin-dependent, nanosecond pump-probe experiments with SPH, which were not previously realizable. The potential of surpassing the SPH densities and production rates of current techniques is discussed.

82.50.Nd - Control of photochemical reactions.
24.70.+s - Polarization phenomena in reactions.
82.50.Hp - Processes caused by visible and UV light.

© EPLA 2008