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A polycrystalline graphite target was irradiated using infrared (800nm) femtosecond (120fs) laser pulses of different energies. Increase of sp3 bonds percentage and possible diamond crystal formation were investigated ‘in-depth’ and on the irradiated surfaces. Synchrotron X-ray diffraction pattern have shown the presence of a diamond peak in one of the irradiated zones while X-ray photoelectron spectroscopy...
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