known LEED techniques. But the positron can also provide unique information on the DIVISIONAL NEWS electronic and physical structure of bulk materials, as well as defect and other im­ The Executive Committee has confir­ CMD Announcement purity centres, from an analysis of its life med the following Divisional posts: time and of the angular correlation bet­ The Board of the Condensed Matter ween the annihilation photons. Astronomy and Astrophysics Division Division has taken the following decisions Chairman: C. Cesarsky concerning the next general conferences : The availability of pion beams has further SEP-CEN Saclay, BP-2 stimulated the development of devices for F-91405 Gif-sur-Yvette — in 1982 the Conference will take place in vacancy site and defect localization. Pions T. (6) 941 80 00 Manchester, (UK). can get trapped at vacancies like muons or Chairman: Prof. V. Heine, Cavendish Laboratory, Computational Group University of Cambridge, Madingley Road, positrons, and their position can be deter­ Chairman : R. Zelazny Cambridge CB3 0HE, UK mined from the decay muons, when the Institute of Nuclear Research channelling effect of the crystal is known. PL-Swierke k. Otwocka — in 1983 the Conference will take place in Among the most recent developments in T. 79 34 81 - Tx. 813 244 ibjsw PL Lausanne (Switzerland). charged particle applications has been the Chairman : Prof. E. Mooser, Institut de Physique, Nuclear Physics Division Université de Lausanne, Dorigny, introduction of heavy ions into the field of Chairman : V. Meyer CH-1015 Lausanne. materials research. Compared to other Physik-Institut Universität types of radiation the special characteristic Schönberggasse 9 These General CMD Conferences will CH-8001 Zurich follow the style and form of the 1980 Ant­ of heavy ions is high damage density along T. (1) 257 29 27 well-defined tracks, the damage being con­ werp General Conference. Both meetings fined to a channel of about 100 Å diameter. Plasma Physics Division are independent EPS ventures. All deci­ The tracks are extremely straight and their Vice-chairman : A. Gibson sions concerning the committees, the pro­ length is unambiguous. This can be used to JET Joint Undertaking grammes, which will deal with all aspects Abingdon 0X14 3EA UK of the physics of condensed matter, etc. increase the storage density of magneto­ T. (235) 21 840 optic films, to create membranes with a will be taken by the Chairmen of the Con­ single submicron hole, and to produce pre­ Quantum Electronics Division ferences on behalf of the CMD Board. It is cision filters. A particularly impressive ap­ Chairman : K.L. Kompa intended to provide a European forum for Max-Planck-Gesellschaft current research in solid state physics and plication is that of microlithography for the Projektgruppe für Laserforschung fabrication of micro structures. D-8046 Garching bei München to encourage international cooperation in It is evident that nuclear physics techni­ T. (89) 3299-701 the field. At each Conference, there will be ques have an important role to play. a series of symposia on recent develop­ ments, as well as contributed papers. Par­ Astronomy and Astrophysics ticipation in the Conferences is open to all. Atomic Physic Division The new Board of the Solar Section of Future EPS-CMD Conferences will be The new Board of the Atomic Spec­ the Astronomy and Astrophysics Division organised by those institutions or physi­ troscopy Section (EGAS) of the Atomic is as follows : cists who, after due application, have been Physics Division is as follows : selected by the CMD Board. They will be Chairman : P. Maltby, University, Oslo and organised as independent European initia­ Chairman: B. Cagnac, Univ. Pierre et Marie Curie, Secretary : H. Nussbaumer, ETH, Zurich, as published tives and not annexed to any national Paris; and in the June issue of Europhysics News. meetings. Secretary: A. Dönszelmann, Zeeman Lab., Amster­ Applications to organize the General dam, as published in the June issue of Europhysics Members: News. R.M. Bonnet, Lab. of Stellar and Planetary Physics, CMD Conferences for 1984 and 1985 should Verrières-le-Buisson be sent as soon as possible to the Chair­ Members: Cl. Chiuderi, Observatory, Florence man of the Board : E. Arimondo, University, Pisa A.D. Fokker, Astronomical Inst., Utrecht Prof. J.T. Devreese, University of Antwerp (U.I.A.), R.J. Champeau, Aimé Cotton Lab., Orsay J. Heyvaerts, Observatory, Meudon Department of Physics, Universiteitsplein 1, J. Heldt, University, Gdansk C. Jordan, University, Oxford B-2610 Wilrijk. H. Hühnermann, University, Marburg M. Kuperus, Astronomical Inst., Utrecht I. Lindgren, Chalmers Univ., Göteborg J.-C. Pecker, Astrophysics Inst., Paris J. D. Silver, Clarendon Lab., Oxford I. W. Roxburgh, Queen Mary Coll., London The EPS Secretariat is closed for A.P. Thorne, Imperial College, London J.O. Stenflo, Inst. of Astronomy, Zurich holidays from 24 Dec. - 4 Jan. R. Winkler, Tech. Univ., Berlin C. Zwaan, Astronomical Inst., Utrecht Happy New Year!

EPS Divisions, Sections and Group Europhysics News is the official journal of the European Editor: E.N. Shaw Physical Society that comprises 28 National Societies, Astronomy and Astrophysics Division Meetings Compilation: W.S. Newman Solar Section Academies and Groups, over 3000 Individual Ordinary Atomic Physics Division Members and 30 Associate Members. Governing bodies Editorial Board: Atomic Spectroscopy Section of EPS are the General Meeting, Council and an elected K. Appert, A. Baratoff, G.J. Béné, Chemical Physics Executive Committee responsible for detailed policy. G.R. Macleod, A. Maeder, J. Muller Electronic and Atomic Collisions EPS promotes the collaboration of physicist throughout Molecular Physics Europe and encourages all aspects of international ex­ Editorial and Advertising Office at the EPS Computational Physics Group change in physics. EPS awards scholarships for Secretariat. Condensed Matter Division research and studies in different countries. EPS Address: EUROPEAN PHYSICAL SOCIETY Low Temperature Section publishes, in addition to Europhysics News, Macromolecular Physics Europhysics Conference Abstracts, Europhysics Educa­ P.O. Box 69, Magnetism tion News and the Proceedings of its General Con­ CH-1213 Petit-Lancy 2 Metals ferences. Individual Ordinary Members receive Switzerland Semiconductors and Insulators Europhysics News (subscription for non-members: 75 Telephone: Geneva (22) 93 11 30 Surfaces and Interfaces Sw.Fr./a), substantial rebates on many publications Telex: 23 455 alarm ch High Energy & Particle Physics Division and pay reduced fees at conferences. Application for Nuclear Physics Division membership is made through the permanent Secretariat Cables: europhys genève Plasma Physics Division in Geneva. Annual subscription for members of a Na­ Printed by: Pfirter frères SA Quantum Electronics Division tional Society from 1 January, 1980 is 32 Sw.Fr. CH-1213 Petit-Lancy/Switzerland

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