Quantum oscillations in the transverse magnetoresistance of aluminum single crystals were measured at 4.2 K in fields near the [001] direction of up to 50 kOe. The rotation diagrams around two axes, the current axis (O-rotation) and normal to it (~b-rotation), were investigated by directly measuring the amplitude of oscillations in steps of about O. 1~ As the field was tilted from [001] by about 2.5 ~ in the dp plane, the separation of double maxima in the 0 rotation diagram changed from 0.8 ~ to 5.0 ~ for the [010] currentsamples, and from 2.8~ 5.6~ the [110 ] current samples, and the amplitude of oscillation decreased. A fast oscillation, which had not been observed in conventional dc magnetoresistance measurements, was simultaneously detected near the field direction where the E-orbit oscillations have a maximum amplitude.
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