Abstract:
Magnetic-field generation arising under irradiation of an aluminium barrier in the air by a series of laser pulses is studied experimentally. It is found that the magnetic field increases nonlinearly from 10-5 to 10-3 T with increasing laser power density from 107 to 109 W cm-2, the degree of nonlinearity being different for single nanosecond pulses, for a series of such pulses with a repetition rate of 100–150 μs and for a combination of a millisecond laser pulse and a series of nanosecond laser pulses. The dependences of the magnetic-field induction on the power density of laser radiation in the above-mentioned regimes are established.
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