Patent Number: 
Section: claims

1. A method of producing an isotope comprising: irradiating a converting material coated with coating material, the said coating material having an atomic number of n; the coated converting material comprising a target;  b) producing high-energy photons by directing high-energy electron beam at the said converting material;  c. interacting the photons with the coating material having an atomic number of n;  d. producing an isotope having an atomic number of nxe2x88x921;  e. wherein the said coating material is in solid form or in liquid form. 2. The method of  claim 1 , further comprising: claim 1 a) irradiation is by directing electrons at the converting material;  b) n is 226, and the coating material having an atomic number n is Radium-226;  c) producing high-energy photons having energy of about 10 MeV to 25 MeV by directing high-energy electron beam having energy of about 20 MeV to about 25 MeV at the said converting material. 3. The method of  claim 2 , wherein nxe2x88x921 is 225, and the isotope having an atomic number of nxe2x88x921 is Radium-225. claim 2 4. The method of  claim 3 , wherein the converting material comprises at least one of Copper, Tungsten, Platinum and Tantalum. claim 3 5. The method of  claim 4 , wherein the converting material is coated with the coating material using electroplating. claim 4 6. The method of  claim 5 , wherein the converting material is electroplated with Nickel before being electroplated with Radium-226. claim 5 7. The method of  claim 5 , wherein the converting material is electroplated with Nickel and Radium-226 simultaneously. claim 5 8. The method of  claim 5 , wherein the Radium-226 is coated onto the converting material at a concentration of from about 80 mg/cm 2  to about 160 mg/cm 2 . claim 5 9. The method of  claim 4 , wherein the electrons axe directed at the converting material coated with the coating material using an electron accelerator, and the electrons are in a beam. claim 4 10. The method of  claim 9 , wherein the converting material has a thickness of from about 0.5 mm to about 1.7 mm, and the electron beam has a current of from about 100 microampere to about 1000 microampere. claim 9 11. The method of  claim 4 , further comprising: claim 4 separating Actinium-225 from Radium-226 using a chemical separation. 12. A method of producing an isotope comprising: a) electroplating a Tungsten converter material plate with Radium-226 coating material;  b) irradiating with a high-energy electron beam the said Radium-226 electroplated Tungsten converter material plate to produce high-energy photons;  c. producing Radium-225 from the interaction of photons with the Radium-226. 13. A method of  claim 1  comprising: claim 1 a. forming a target from the converting material coated with a coating material;  b. directing electrons at the target;  c. producing photons from the interaction of the electrons with the target. 14. The method according to  claim 13 , wherein the liquid is contained. claim 13 15. The method according to  claim 13 , wherein the coating material is a liquid and is in contact with the converting material. claim 13 16. A method of  claim 13  further comprising: claim 13 the target is a solid target. 17. The method of  claim 16 , wherein the solid target is a metal plate electroplated with Radium-226. claim 16 18. The method of  claim 17 , wherein the metal plate has an atomic number of 30 or higher. claim 17 19. The method of  claim 18 , wherein the metal is selected from the group of Tungsten, Tantalum, Platinum, and Copper. claim 18 20. A method of  claim 13  further comprising: claim 13 the target composed of a metal plate coated with mixture of Radium-226 and Radium-225 and Actinium-225. 21. The metal plate of  claim 20 , wherein the metal is selected from Tungsten, Tantalum, Platinum, and Copper. claim 20 22. The method of  claim 19 , wherein the metal is Tungsten. claim 19 23. A method of  claim 13  comprising the further steps of: claim 13 a. forming the coating material from Radium-226;  b. producing Radium-225 from interaction of photons with the Radium-226 target;  c. decaying Radium-225 to Actinium-225. 24. The method according to  claim 15 , wherein the coating material is flowed over the said converting material. claim 15