We have developed thin an thick long-lived carbon stripper foils for high energy, high intensity ion beams. The foil tnicknesses are about 10 mu g/cm~2 (cluster foil) and 200 mu g/cm~2 (hybrid foil) for thin and thick, respectively. The thin foil is made by a controlled DC-arc discharge (CDAD) method, by using the size effect of the carbon particles. The size effect was the difference between the carbon particle sizes emitted from the cathode and the anode electrodes in the DC arc discharge, in which the particle size from the cathode is large (0.3 mu m PHI ) and the other is small (0.003 mu m PHI). The thin foils composed of large particle size are not mechanically strong, but long-lived under low energy ion bombardment with a 3.2 MeV, 2 - 3 mu A Ne~+ beam.
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