Fig. 1. MC-50 cyclotron in KIRAMS.
Fig. 2. CNT network before proton irradiation (a) on scale 20 μm, (b) 50 nm, and (c) 10 nm where shown the overlapped Cross junction, not damaged and associated for connection.
Fig. 3. CNT after irradiation with 3.4 MeV protons (a) shown damaged alike rupture with 1016 p/cm2 fluence, (b) typical remedial junction could find on 1014 p/cm2 fluence.
Fig. 4. Change rate of sheet resistance in CNT after irradiation uaing 3.4 MeV protons with fluence of 1013 p cm2 fluence, 1014 p/cm2, 1015 p/cm2, and 1016 p/cm2.
Fig. 5. Change of sheet resistance associated with the fluence of proton irradiation. In cases of 1013 p/cm2 and 1014 p/cm2 shown the reduction of resistance or induced defects for new allocated remedial junctions, that is the increase of electrical and thermal conductivity. the other hand, while done over fluence of 1015 p/cm2 fluence, the network of CNTs are changed to the aggravation of junction, that is the induction of serious defects.
Fig. 6. Change of D/G ratio chcked with Raman Spectroscopy shown why have to use 3.4 MeV. Energy of 10 MeV damaged larger than those of 3.4 MeV.
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