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A plasma target for the investigation of the interaction of fast heavy ions with hot matter

: Noll, R.; Kunze, H.; Haas, C.R.

Nuclear instruments and methods in physics research, Section A. Accelerators, spectrometers, detectors and associated equipment 278 (1989), pp.85-88
ISSN: 0167-5087
ISSN: 0168-9002
Journal Article
Fraunhofer ILT ()
fast heavy ion; hot matter ion projectile; interferometrically; investigation of the interaction; z-pinch device

The experimental investigation of the interaction of fast heavy-ion beams with hot matter is of fundamental interest for atomic physics and plasma physics. In a beam-plasma experiment, an electrically generated plasma will be used as a target for the ion beam from the stripper region of the UNILAC at the GSI, Darmstadt. The aim is the measurement of charge state (q) and energy loss (dE/dx) of the ion projectiles traversing the plasma target. A modified z-pinch device was designed to meet the target requirements, which are among others: plasma parameters and geometry matched to the ion beam features, controlled and homogeneous plasma state free of instabilities. The dynamics of the z-pinch plasma is observed with image converter and streak cameras. The measurement show that a uniform cylindrical plasma can be generated with a length of 20 cm and a diameter of bigger than 5 mm. An electron density greater than 10 high 18 cm high minus 3 is measure interferometrically during the pinch pha se.