C-11-methane production in small volume, high pressure gas targets

The parameters affecting the production of C-11-methane, in situ, in small volume, high-pressure gas targets include target chamber size and material. The results are based on experiments that varied the target gas compositio n, the target material and geometry. Methane production yields were typical ly 65 % of the yields of (CO2)-C-11 in the same target chamber.