Patent Number: 
Section: claims

1. A method for producing a neutral beam of spin polarized Hydrogen isotopes by photodissociating compound molecules, each compound molecule comprising a Hydrogen isotope and a second element, the method comprising:generating a molecular beam by passing a compound molecule through a nozzle; introducing the molecular beam into a photodissociation chamber;aligning molecular bonds of the molecular beam in a predetermined orientation before photodissociation;photodissociating the molecular beam into spin polarized Hydrogen isotopes and second elements by intersecting the molecular beam with a circularly polarized photolysis laser beam;guiding the molecular beam out of the photodissociation chamber;accelerating the spin polarized Hydrogen isotopes; andneutralizing the spin polarized Hydrogen isotopes to generate a neutral beam. 2. The method according to claim 1, further comprising selecting molecules of the molecular beam having a predetermined orientation after photodissociating. 3. The method according to claim 1, wherein the circularly polarized photolysis laser beam is a short pulsed laser beam. 4. The method according to claim 1, further comprising applying a strong magnetic field to the spin polarized Hydrogen isotopes after photodissociating. 5. The method according to claim 1, further comprising:providing the compound molecules in a mixing chamber; andmixing the compound molecules with an inert gas or an inert molecule in the mixing chamber thereby obtaining a mixture, and wherein the mixture is passed through a nozzle. 6. The method according to claim 1, wherein photodissociating comprises photodissociating the molecular beam into spin-polarized Hydrogen isotopes and second elements. 7. The method according to claim 1, wherein the second element is selected from any of Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Mercury (Hg), Oxygen (O) and Sulfur (S). 8. The method according to claim 1, wherein the generated neutral beam of spin polarized Hydrogen isotopes comprises at least 50% of the compound molecule Hydrogen isotopes spin polarized. 9. The method according to claim 1, further comprising ionizing the spin polarized Hydrogen isotopes by intersecting the molecular beam with an ionization laser beam or with an electron beam thereby isolating a desired polarization of the spin polarized Hydrogen isotopes. 10. The method according to claim 9, wherein ionizing the spin polarized Hydrogen isotopes is performed before photodissociating the molecular beam. 11. The method according to claim 9, wherein ionizing the spin polarized Hydrogen isotopes is performed after photodissociating the molecular beam. 12. A method for producing a neutral beam of spin polarized Hydrogen isotopes by photodissociating compound molecules, each compound molecule comprising a Hydrogen isotope and a second element, the method comprising:generating a molecular beam by passing a compound molecules through a nozzle;introducing the molecular beam into a photodissociation chamber;exciting the molecular beam rovibrationally to a predetermined vibrational, rotational and intermediate hyperfine state;photodissociating the molecular beam into spin polarized Hydrogen isotopes and second elements by intersecting the molecular beam with a circularly polarized photolysis laser beam;guiding the molecular beam out of the photodissociation chamber;accelerating the spin polarized Hydrogen isotopes; andneutralizing the spin polarized Hydrogen isotopes to generate a neutral beam. 13. The method according to claim 12, wherein exciting the molecular beam comprises exciting with circularly polarized infrared light. 14. A photodissociation system for producing a neutral beam of spin polarized Hydrogen isotopes by photodissociating compound molecules, each compound molecule comprising a Hydrogen isotope and a second element, the system comprising:a nozzle to generate a molecular beam by passing the compound molecules through it;means to align molecular bonds of the molecular beam in a predetermined orientation before photodissociation;a photodissociation chamber coupled to the nozzle to receive and expand the molecular beam;a circularly polarized photolysis laser source arranged with the photodissociation chamber to generate a circularly polarized photolysis laser beam to photodissociate the molecular beam into spin polarized Hydrogen isotopes and second elements;means to guide the molecular beam out of the photodissociation chamber;means to accelerate the spin polarized Hydrogen isotopes; and means to neutralize the spin polarized Hydrogen isotopes and generate the neutral beam. 15. The photodissociation system according to claim 14, further comprising means for selecting molecular bonds of the molecular beam parallel to a quantization axis, said means being arranged with the photodissociation chamber. 16. The photodissociation system according to claim 15, wherein the means for selecting comprise one or more spatial filters.