Calendar: 1967-1968 Page 414

Annual Report of the Delegacy Ixxxv and doped crystal lattices Powerful laser sources and high-pressure equipment were developed for these studies Professor Champion's group continues its studies on the electrical and optical properties of diamond and magnesium oxide Included in range of new researches the group has joint programme with Services Electronics Research Laboratories for doping diamond by ion implantation This will be particularly important in connection with Dr Lightowlers's studies of transport properties in diamond The nuclear physics group under Dr Burge extended its in- vestigations of the interactions of 50-MeV protons using the excellent facilities of the Rutherford High Energy Laboratory Scattering studies were made on Ti48'50 V51 Cr52 and Mn24 Various nuclear reactions were investigated using focal-plan acoustic spark chamber and the high-resolution double-focusing magnet The scope of the research of the atmospherics and radio physics research group under Dr Chapman was substantially increased by the acquisition of mobile field station This together with the observing station at Goonhilly Downs and the facilities provided at the GPO station Banbury opened up new field of investigations on radio noise geomagnetic micropulsations and ionospheric absorption phenomena Dr Giles and Mr Chomet built multi-disc velocity selector for use with their molecular beam apparatus Mr Curling and Mr Temple continue to develop automatic focusing and monitoring techniques for electron microscopy Patent rights covering some of this work were assigned to Conferences visits lectures etc Professor Price gave lectures in Boston Washington Bethesda Natick and Manchester and presented invited papers at conferences at Columbus and Birmingham Professor Domb lectured at Manchester Redhill Sussex and Bristol and gave invited papers at conferences at Shrivenham and Helsinki Professor Fisher lectured at Harwell Brussels Leiden Queen Mary College and Im- perial College and gave papers at conferences in Manchester and Oxford Dr Sykes Mr Joyce and Mr Ferdinand gave papers at Manchester London and Rome Papers were presented to nuclear physics conferences at Liverpool and Oxford by Dr Burge and his group Dr Wilkinson gave invited papers at conferences in Liblice Czechoslovakia London and Edin- burgh He also lectured at the universities of Swansea and Kent and at the Woolwich and Borough Polytechnics Dr Ll Jones lectured at