Patent Number: 
Section: claims

1. A method of forming a diode assembly for producing a pulsed fusion event in a z-pinch driver, the method comprising:providing a fusionable fuel source material including a lithium compound formed of one or more lithium isotopes and one or more hydrogen isotopes;heating the fusionable fuel source material under controlled conditions in a vacuumed environment such that a surface of the fusionable fuel source material decomposes to lithium metal and a hydrogen isotopic gas leaving an inner core of undecomposed fusionable fuel source material; andextracting the hydrogen isotopic gas from the vacuumed environment to form the diode assembly having a lithium metal outer sheath integrally formed around the inner core of undecomposed fusionable fuel source material. 2. The method of claim 1 wherein the fusionable fuel source material is selected from a group consisting of 6LiD, 6LiT, 7LiD, and 7LiT. 3. The method of claim 1 wherein the controlled conditions include a vapor pressure ranging from about 2.2 torr to about 11.1 torr. 4. The method of claim 1 wherein the surface of the fusionable fuel source material is heated to a temperature ranging from about 400° C. to about 680° C. 5. The method of claim 1 wherein the surface of the fusionable fuel source material is heated to a temperature ranging from about 600° C. to about 660° C. 6. The method of claim 1 wherein the controlled conditions include a vapor pressure ranging from about 2.2 torr to about 11.1 torr and the surface of the fusionable fuel source material being heated to a temperature ranging from about 400° C. to about 680° C. 7. The method of claim 6 wherein the heating step includes raising the vapor pressure of the vacuumed environment as the temperature of the surface of the fusionable fuel source material increases. 8. The method of claim 1 further comprising controlling a thickness of the lithium metal outer sheath between about ten microns and about 150 microns by selecting the controlled conditions to include a temperature between about 560° C. to about 660° C. and a heating time between about one hour to about three hours. 9. The method of claim 1 wherein the heating step includes controlling a thickness of the lithium metal outer sheath by adjusting an amount of time in which the fusionable fuel source material is heated under controlled conditions in the vacuumed environment. 10. The method of claim 1 wherein the heating and extracting steps are performed in a sealed vessel having a separator disposed between the fusionable fuel source material and an interior surface of the sealed vessel.