Deflection of atomic beams with isotope separation by optical resonance radiation using stimulated emission and the A.C. Stark effect
US4047026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Jan 2, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Improved atomic beam deflection and improved isotope separation, even in vapors, is proposed by substituting the A.C. Stark effect for the baseband chirp of the pushing beam in the prior proposal by I. Nebenzahl et al, Applied Physics Letters, Vol. 25, page 327 (September 1974). The efficiency inherent in re-using the photons as in the Nebenzahl et al proposal is retained; but the external frequency chirpers are avoided. The entire process is performed by two pulses of monochromatic coherent light, thereby avoiding the complication of amplifying frequency-modulated light pulses. The A.C. Stark effect is provided by the second beam of coherent monochromatic light, which is sufficiently intense to chirp the energy levels of the atoms or isotopes of the atomic beam or vapor. Although, in general, the A.C. Stark effect will alter the isotope shift somewhat, it is not eliminated. In fact, the appropriate choice of frequencies of the pushing and chirping beams may even relax the requirements with respect to the isotope absorption line shift for effective separation. That is, it may make the isotope absorption lines more easily resolvable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.