Norman R Greiner

US Patent:

42381410, Dec 9, 1980

Filed:

Oct 4, 1978

Appl. No.:

5/948454

Inventors:

Norman R. Greiner - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G02B 518

US Classification:

350162R

Abstract:

A device for delaying specified frequencies of a multiple frequency laser beam. The device separates the multiple frequency beam into a series of spatially separated single frequency beams. The propagation distance of the single frequency beam is subsequently altered to provide the desired delay for each specific frequency. Focusing reflectors can be utilized to provide a simple but nonadjustable system or, flat reflectors with collimating and focusing optics can be utilized to provide an adjustable system.

US Patent:

42355184, Nov 25, 1980

Filed:

Oct 4, 1978

Appl. No.:

5/948375

Inventors:

Norman R. Greiner - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G02B 518

US Classification:

350162R

Abstract:

A high efficiency laser spectrum conditioner for generating a collinear parallel output beam containing a predetermined set of frequencies from a multifrequency laser. A diffraction grating and spherical mirror are used in combination, to disperse the various frequencies of the input laser beam and direct these frequencies along various parallel lines spatially separated from one another to an apertured mask. Selection of the desired frequencies is accomplished by placement of apertures at locations on the mask where the desired frequencies intersect the mask. A recollimated parallel output beam with the desired set of frequencies is subsequently generated utilizing a mirror and grating matched and geometrically aligned in the same manner as the input grating and mirror.

US Patent:

43348831, Jun 15, 1982

Filed:

Aug 14, 1973

Appl. No.:

5/387859

Inventors:

C. Paul Robinson - Los Alamos NM
Reed J. Jensen - Los Alamos NM
Theodore P. Cotter - Los Alamos NM
Norman R. Greiner - Los Alamos NM
Keith Boyer - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 5900

US Classification:

23293R

Abstract:

A process for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium and plutonium.

US Patent:

46612211, Apr 28, 1987

Filed:

Dec 23, 1985

Appl. No.:

6/815186

Inventors:

C. Paul Robinson - Los Alamos NM
Reed J. Jensen - Los Alamos NM
Theodore P. Cotter - Los Alamos NM
Norman R. Greiner - Los Alamos NM
Keith Boyer - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 5900

US Classification:

20415722

Abstract:

A process for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium and plutonium.

US Patent:

47341777, Mar 29, 1988

Filed:

Nov 26, 1975

Appl. No.:

5/636343

Inventors:

C. Paul Robinson - Los Alamos NM
Reed J. Jensen - Los Alamos NM
Theodore P. Cotter - Munich, DE
Keith Boyer - Los Alamos NM
Norman R. Greiner - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B01D 5934

US Classification:

2041572

Abstract:

A process and apparatus for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photolysis, photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photolysis, photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium.