Patents by Inventor Roger Bir

Roger Bir has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of isotope separation
    Patent number: 4360501
    Abstract: An isotopic mixture composed of molecules .sup.1 MX.sub.n and .sup.2 MX.sub.n, where .sup.1 M and .sup.2 M are two isotopic species of the atom M, is irradiated with a beam of monochromatic laser light with energy h.nu. in resonance with the energy difference between two vibrational levels of an isotopic species of the molecule .sup.1 MX.sub.n. The .sup.1 MX.sub.n and .sup.2 MX.sub.n molecules also interact with the atoms of a neutral gas E in superactivated form in the Rydberg state E** in order to convert the molecules to negative ions by capture of the electrons released by the Rydberg atoms in accordance with the reactions:.sup.1 MX.sub.n +h.nu..fwdarw..sup.1 MX.sub.n *E**.fwdarw.E.sup.+ +e.sup.-.sup.1 MX.sub.n *+e.sup.- .fwdarw..sup.1 MX.sub.n-1.sup.- +X.sup.2 MX.sub.n +e.sup.- .fwdarw..sup.2 MX.sub.n .sup.
    Type: Grant
    Filed: November 2, 1979
    Date of Patent: November 23, 1982
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Roger Bir, Jean-Pierre Schermann