Integrator for use in bombardment experiments

Takeda, Michihiko; Yasuda, Kimihiko; Ikuta, S.; Masuda, Hideyuki

doi:10.1063/1.1135329

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1982

2014

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Cited by 4 publications

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Changes of the band Gap of SiC crystals by high energy electron irradiation and annealing

Yasuda

Takeda

Masuda

et al. 1982

phys. stat. sol. (a)

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Optical absorption is investigated for SiC crystals irradiated with 7 MeV electrons. The band gap of the specimen is found to be narrowed from 3.01 eV before irradiation to 2.81 eV after irradiation with 3 × 1018 electrons/cm2. It is recovered to 2.99 eV by isochronal annealing up to 1000 °C for 30 minutes in hydrogen atmosphere. Two annealing stages are observed at around 150 and 650 °C. The activation energies of the recovery for the two stages are estimated to be about 0.16 and 1.3 eV, respectively.

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Changes of the band Gap of SiC crystals by high energy electron irradiation and annealing

Yasuda

Takeda

Masuda

et al. 1982

phys. stat. sol. (a)

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Radiation effects in a photo-coupler with high-energy electrons and γ-rays and recovery by current annealing

Yasuda

Takeda

Masuda

et al. 1985

phys. stat. sol. (a)

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The radiation damage of a photo‐coupler, composed of GaAs LED and Si phototransistor, is studied by irradiation with 7 MeV electrons from a linac and γ‐rays from 60Co. The current transfer ratio (GTE) is measured at room temperature and 77 K. The CTR decreases rapidly over total dose of about 1012 electrons/cm2 for electron irradiation and 103 Gy (Si) for γ‐ray irradiation. Changes of the CTR by irradiation, measured at 77 K, are smaller than those at room temperature. The CTR of the photo‐coupler, irradiated with 2.6 × 104 G‐y (Si), could be recovered to about 50% of the preirradiation value due to current annealing by applying the forward current of 100 mA to the LED in the photo‐coupler for about 100 min.

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Positron annihilation in titanium alloys modified by proton irradiation

Mukashev

Umarov

2012

Radiation Effects and Defects in Solids

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Integrator for use in bombardment experiments

Cited by 4 publications

References 7 publications

Changes of the band Gap of SiC crystals by high energy electron irradiation and annealing

Changes of the band Gap of SiC crystals by high energy electron irradiation and annealing

Radiation effects in a photo-coupler with high-energy electrons and γ-rays and recovery by current annealing

Positron annihilation in titanium alloys modified by proton irradiation

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