PTB-News 2005.3

Ultra-fast magnetic memories The micro-ion beam is speeding up Avogadro Project: First isotope-pure silicon single-crystal Towards the global natural gas cubic meter Against the trend: NMR measurements in low fields Radiation exposure mapped at flight altitudes

Imprint PTBnews 05.3 English edition December 2005 Published by Physikalisch-Technische Bundesanstalt (PTB) Braunschweig and Berlin · Germany

Chief Editor Jens Simon PTB, Bundesallee 100 D-38116 Braunschweig phone: (+49 531) 592-30 06 fax: (+49 531) 592-30 08 e-mail: ptbnews@ptb.de