Henry Stern

US Patent:

6724189, Apr 20, 2004

Filed:

Dec 18, 2001

Appl. No.:

10/025053

Inventors:

Henry J. Stern - West Palm Beach FL 33414

International Classification:

G01N 300

US Classification:

324300, 324307, 600407

Abstract:

A nuclear decay laser that produces a stream of nuclear decay particles and/or photons of electromagnetic radiation. The stream of nuclear decay particles and/or photons is produced by subjecting radioactive materials to an external magnetic field which causes the radioactive nuclei to align with and precess around the external magnetic field vector. The precessing radioactive nuclei are then subjected to Radio Frequency (RF) pulses tuned to the Larmor frequency of the precessing nuclei which causes the nuclei to flip out of the plane of the external magnetic field vector into the X-Y plane. A refocusing RF pulse is then applied to the radioactive material which brings all of the magnetic moments of the flipped radioactive nuclei into phase. This can also be achieved with MRI gradient echo technology. When the initial RF pulse is discontinued, the flipped radioactive nuclei undergo T1 or spin-lattice relaxation which occurs when the radioactive nuclei relax back into phase with the external magnetic field vector during the process of T1 relaxation.

US Patent:

63317745, Dec 18, 2001

Filed:

Apr 30, 1999

Appl. No.:

9/303480

Inventors:

Henry J. Stern - West Palm Beach FL

International Classification:

G01V 300

US Classification:

324300

Abstract:

A nuclear decay laser that produces a stream of nuclear decay particles and/or photons of electromagnetic radiation. The stream of nuclear decay particles and/or photons is produced by subjecting radioactive materials to an external magnetic field which causes the radioactive nuclei to align with and precess around the external magnetic field vector. The precessing radioactive nuclei are then subjected to Radio Frequency (RF) pulses tuned to the Larmor frequency of the precessing nuclei which causes the nuclei to flip out of the plane of the external magnetic field vector into the X-Y plane. A refocusing RF pulse is then applied to the radioactive material which brings all of the magnetic moments of the flipped radioactive nuclei into phase. This can also be achieved with MRI gradient echo technology. When the initial RF pulse is discontinued, the flipped radioactive nuclei undergo T1 or spin-lattice relaxation which occurs when the radioactive nuclei relax back into phase with the external magnetic field vector during the process of T1 relaxation.