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The self-generated magnetic field produced when a pulsed Nd:glass laser is focused onto a carbon foil target is measured for the first time using the Zeeman effect. Emission from the CV 1s2s3S1–1s2p3P2 (2270.9 Å) was used for the measurement. At a laser irradiance of ∼5×1012 W/cm2, the magnetic field increased from 100 to 200 kG when the focal spot was changed from a flat-topped distribution to a ring pattern, which caused higher density gradients. A Faraday rotation measurement at approximately 200 kG agreed with the Zeeman effect measurement. Opacity effects in the plasma enhanced the sensitivity, allowing the Zeeman measurement to be made in this magnetic field range.

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The rod-pinch diode[1] is a self-magnetically insulated electron beam diode that is capable of producing a very bright source of hard x-rays. As fielded on the Cygnus accelerator[2], the diode operates at an impedance of 50 Ohms and produces short pulse ( ~50 ns) bremsstrahlung radiation with a 2 MeV photon endpoint energy and dose of 4 rad measured at one meter, with an x-ray spot size ~ 1mm. The source can be used to image through ~ 40 g/cm 2 of material with spatial resolution of order 300 m.