Berlin 2005 – wissenschaftliches Programm

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MA: Magnetismus

MA 20: Poster:Schichten(1-29),Spintrsp(30-45),Ex-Bias(46-63),Spindyn(64-75),Mikromat.(76-80),Cluster(81-94),Abbv.(95-99),Obflm(100-02),SpElek.(103-09),E-Theo(110-14),Mikromag.(115-16),Spin+PÜ(117-26),Mag.Mat.(127-51),Meth.(152-55),Mol.Mag(156-59),Kondo(160-65

MA 20.155: Poster

Montag, 7. März 2005, 14:00–18:00, Poster TU C

A Desktop NMR Cryogen free Magnet For 100 And 200Mhz — •Jeremy Good — 30 Acton Park Industrial Estate, London W3 7QE, UK

Cryogenic have built a miniature helium and cryogen free magnet in a miniature cryostat with 5 ppm conformity at fields of 2.5 and 5 Tesla. The magnet is cooled by a small refrigerator to 4K without the use of liquid helium. The overall dimensions of the cryostat are 260mm high with a footprint 240 x 540mm. The workspace is a bore of 51mm but other sizes are practical in the same geometry. For the lower field the system is designed to run with a 1 Kilowatt air-cooled single-phase compressor making the magnet easy to use by non-specialists and to transport between locations. The magnet is intended for use in ESR as well as low field NMR experiments. It is thought to be the smallest High Field Superconductors NMR magnet yet built.