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VOLUME 30 (1979) | ISSUE 7 | PAGE 419
Depolarization of hot photoluminescence in GaAs crystals in a magnetic field
The rotation of the momentum distribution function of hot electrons was recorded in /?-GaAs crystals from the variation of the polarization characteristics of hot photoluminescence in the magnetic field. This made it possible to measure the lifetime of hot electrons in the 0.4-eV state. For an acceptor concentration of 1.2 Χ 1018 cm ~3 the lifetime was 5 X 10 ~14 sec.