Radiation Effect on YBa₂Cu₃O_7-δ by 35 MeV Proton Irradiation

The specimens of YBa₂Cu₃O_7-δ are irradiated by 35 MeV proton at 70K, the sero-resistance temperature TC0 is increased with the proton fluence within the range (2.21 x 10¹³-1.77 x 10¹⁴p/cm²). T_c0 is increased from 91 to 97K at the fluence 1.77 x 10¹⁴p/cm² and critical current is also enhanced.