H(3s) beam production by laser excitation of metastable hydrogen atoms in an electric field. I. Experiment
- 28 September 1985
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 18 (18) , 3667-3672
- https://doi.org/10.1088/0022-3700/18/18/007
Abstract
An experimental method to produce an intense fast beam of H(3s) atoms is described. H(3s) atoms are formed in a two-step process, first laser excitation of a beam of H(2s) atoms is achieved in an electric field where transitions occur between Stark states; in the second step, the atoms travel to a zero-field region and the Stark states formed evolve adiabatically to non-perturbed atomic states. By adjusting the laser frequency, 2s-3s excitation can be achieved. A neutral hydrogen beam with 2.7% of the atoms in the 3s state has been produced at an energy of 3 keV with 400 mW laser power.Keywords
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