Patent Number: 
Section: claims

1. A method for generating low-energy electrons in a biological material, comprising:supporting the biological material;generating laser beam pulses; andfocusing the laser beam pulses toward a region of interest within the biological material to generate filaments of low-energy electrons. 2. The method of claim 1, wherein the biological material is a laboratory sample. 3. The method of claim 1, wherein the biological material is contained in an aqueous solution. 4. The method of claim 1, wherein laser pulses have a wavelength of about 800 nanometers. 5. The method of claim 1, wherein laser pulses have a duration of about 100 femtosecond. 6. The method of claim 1, wherein laser pulses are repeated at a rate of about 1 kHz. 7. The method of claim 1, wherein laser pulses are generated at a power of about 300 milliwatts. 8. The method of claim 1, wherein the region of interest has a volume of about one cubic centimeter. 9. The method of claim 1, wherein the low-energy electrons have anisotropic concentrations. 10. The method of claim 1, comprising measuring a ferric ion concentration in the region of interest following generation of the low-energy electrons. 11. The method of claim 1, comprising measuring a thymine concentration in the region of interest following generation of the low-energy electrons. 12. Use of the method of claim 1 for a function selected from the group consisting of radiochemistry, sterilization, polymerization, nanoparticle coating and nanoparticle generation. 13. Use of the method of claim 1 for radiotherapy. 14. A system for generating low-energy electrons in a biological material, comprising:a support for the biological material;a pulsed laser; anda focusing mechanism for directing laser beam pulses toward a region of interest within the biological material to generate filaments of low-energy electrons. 15. The system of claim 14, wherein the biological material contains water. 16. The system of claim 14, wherein laser pulses have a wavelength of about 800 nanometers. 17. The system of claim 14, wherein laser pulses have a duration of about 100 femtosecond. 18. The system of claim 14, wherein laser pulses are repeated at a rate of about 1 kHz. 19. The system of claim 14, wherein laser pulses are generated at a power of about 300 milliwatts. 20. The system of claim 14, wherein the region of interest has a volume of about one cubic centimeter. 21. The system of claim 14, wherein the support is an optical path cuvette comprising a laboratory sample. 22. The system of claim 21, comprising a magnetic steering device for homogenizing a content of the cuvette. 23. The system of claim 14, wherein the low-energy electrons have anisotropic concentrations. 24. The system of claim 14, comprising a dosimeter for measuring a ferric ion concentration in the region of interest following generation of the low-energy electrons. 25. The system of claim 14, comprising a chromatograph for measuring a thymine concentration in the region of interest following generation of the low-energy electrons. 26. Use of the system of claim 14 for a function selected from the group consisting of radiochemistry, sterilization, polymerization, nanoparticle coating and nanoparticle generation. 27. Use of the system of claim 14 for radiotherapy.