Abstract
The generation of pulsed magnetic fields in the range 20 kG to 2MG by laser-driven coils is analyzed. Previous experimental results are modeled using a time-dependent circuit equation. By varying the circuit parameters and the coil geometry, it is shown that a field of 30 kG and a rate of change of 4 kG/ns can be generated by a small single-turn solenoid driven by a 1 J, 20 ns laser pulse. Using a more energetic laser pulse, a rate of 600 kG/ns is achievable. This value of dB/dt greatly exceeds that available from the more conventional field generation devices and is important for the observation of transient magnetic phenomena.
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