Method and apparatus for the characterization and analysis...

Details Method and apparatus for the characterization and analysis... Method and apparatus for the characterization and analysis...

2007-05-22

2007-05-22

Vanore, David (Department: 2881)

Radiant energy

Ion generation

Field ionization type

Reexamination Certificate

active

10515942

ABSTRACT:
A method and apparatus to characterize a shape of an isomeric form of a sample comprised of a molecule or a cluster of molecules. The method includes raising an electron of the sample to a Rydberg state having an orbital diameter sufficient to encompass at least a portion of the sample; further raising the electron to an ionization state and correlating the energy required to transition from the Rydberg state to the ionization state with the three dimensional structure of the sample. In a preferred embodiment raising the electron to the Rydberg state includes raising the electron to a first Rydberg state Ry1, and then raising the electron to a second Rydberg state Ry2. Further raising the electron to the ionization state includes raising the electron from the Ry2state to the ionization state using optical excitation, and correlating the energy considers at least a wavelength of the optical excitation. Also disclosed are method and apparatus that use the Rydberg states to separate at least one isomeric form of a sample from other isomeric forms of the sample, where the sample is comprised of a molecule or a cluster of molecules.

REFERENCES:
patent: 3897302 (1975-07-01), Klein
patent: 3987302 (1976-10-01), Hurst et al.
patent: 4107537 (1978-08-01), Forsen et al.
patent: 4360501 (1982-11-01), Bir et al.
patent: 6008496 (1999-12-01), Winefordner et al.

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