Vacuum news

New literature

Vacuum products from Mullard Five rec&t data sheets received from Mullard Ltd (Mullard House. Torrinrzton Place, London, WCl), describk the foliow- ing items: the IOG-12 and JOG-13 UHV ionization gauges, the former having a glass case and the latter being of the insertion type and available welded in VMF-51 gold wire seal flange; the LD-2 fully automatic helium leak detector incorporating a helium leak scan facility: another standard Inte-Vat UHV system of the type VC-407, fully mobile with pumping speed, 100 litre/sec; the IOG-15 combined Bayard-Alpert/Pirani gauge head together with a provisional data sheet on the associated VC-600 control unit.

Au&News A recent bulletin from Ad Auriema, Inc (85 Broad Street, New York 4, NY, USA), the combination export managers, contains news of two more vacuum furnaces designed and manufactured by R D Brew & Co. Model 921 is designed for the heat treatment, high-temperature brazing and diffusion bonding of various components particularly applied in jet engine manu- facture. With this type of furnace treatment, final finishing operations are reduced to a minimum. Model 414 is shown in use on a more specialized application: the brazing of a caesium ion engine fuel tank for use with interplanetary spacecraft. This model is diffusion pumped and can attain pres- sures in the lo-’ to lo-’ torr range as well as operation at temperatures up to 2800°C.

Mass spectrometry at AEI AEI Ltd have now issued fully descriptive data sheets on their Minimass and Vacuum MS10 mass spectrometers, which were covered in a re&nt issue of Vacuum News. In addition. a useful wall chart on the identification and elimination of vacuum contaminants, with mass numbers ranging from 2 to 204 is supplied.

Process control instruments The product catalogue from KGD Instru- ments Ltd, Manor Royal, Crawley, Sussex, covers pressure gauges, switches, trans- ducers, temperature controls and liquid level indicators applicable mainly in the process industries. Vacuum gauges and switches for a wide range of rough vacuum applications are included.

Commercial news

Leybold’s and Heraeus merge On the 19th June 1967 it was announced that the Companies E Leybold’s Nach- folger K G, Cologne, and Heraeus Hoch- vakum GmbH. Hanau (subsidiarv of W C Heraeus Gmbh, Hana;, had d&ided to amalgamate as of the 1st July 1967.

High Vacuum Technology is making

increasing demands on resources for Research and Development. In order to remain competitive in an expanding world market, both firms maintained that an amalgamation of their activities and resources was inevitable. The new firm is designated : Leybold-Heraeus GmbH & Co and will have its headauarters in Cologne. The Executive Committee com- prises Dip1 Phys Helmut Gruber (as chair- man) together with Dr Georg-Wilhelm Oetjen and Werner Otten. The Advisory Board is led by Dr Manfred Dunkel (Cologne), with Dr Reinhard Heraeus (Hanau) as deputy and Herbert W Momm (Cologne), consultant. The new firm expects a turnover of over 100 Million DM. The number of employees is about 2,400. Production programmes of both firms will be continued by the new one.

Conferences, symposia and courses

The Institute of Physics and the Physical Society The Materials and Testing Group together with the Vacuum Physics Group have arranged a joint conference on High- Voltage Insulation in Vacuum to be held at the Institution of Electrical Engineers, London on the 13th and 14th September 1967. The Conference will be concerned with both fundamental and industrial research in this field. Experimental and theoretical contributions are invited on the following subjects : vacuum breakdown, pre-breakdown phenomena, dielectric barrier layers, superconducting electrodes, solid insulators in vacuum, shielding, effect of residual gases and electrode temperature, vacuum techniques, applica- tions to vacuum circuit breakers, mercury- arc rectifiers and cryogenic cables.

A Conference on Waves in Plasma has been arranged in collaboration with the United Kimzdom Atomic Energv Authoritv to be held 2 the Culham Laboratory fro& the 1 lth to the 13th September 1967. This conference is intended to bring together those in the UK, studying waves in astro- physical, ionoipheric and laboratory olasma. The sub&t matter will include: plasma wave excitation, whistlers including helicons, drift waves, theory of oscillations in a collisionless plasma, waves in geo- physical plasma and interaction of radia- tion with plasma.

The Electron Microscopy and Analysis Group is arranging a conference on Electron Optics, Instrumentation, and Quan- titative Electron Microscotw. to be held at the University of St A&ews, Scotland from Tuesdav 19th to Thursdav 21st September 1$67. The first day &ill be devoted to electron optics including electron guns and probe-forming systems, lenses and imaging devices, energy analyzers and filters, and image display, recording and intensifying systems. The second day will be concerned with aspects of instrumenta- tion including specimen stages, clean

vacuum instruments, scanning systems and instruments, and high voltage eelctron microscopes. The third day will cover quantitative aspects of electron microscopy including techniques which lead to some quantitative measure of the properties of the specimen, such as linear dimensions, particle counting, mass or mass thickness, chemical composition and physical proper- ties, and the calibration of the constants of the instrument.

International Vacuum Metallurgy Con- ference The Vacuum Metallurgy Division of the American Vacuum Society together with the Metallurgy Society of the AMIMMPE sponsored the International Vacuum oetallurgy Conference held at the Barbizon- Plaza Hotel. New York. USA on 12th- 16th June (967. The fir& day June 13th was given over to a plenary session on the progress of vacuum metallurgy throughout the world, with invited review papers on progress in North America, Japan, Western Europe and the Developing Countries. Subsequent sessions covered vacuum de- gassing, materials in the vacuum environ- ment, vacuum induction melting, vacuum metallurgical equipment, vacuum arc melting, electron beam processing and a final session of six miscellaneous papers on vacuum metallurgy.

Czechoslovak National Meeting on Vacuum Technique A course on “Design and servicing of vacuum systems in industrial devices” was held in Prague, Czechoslovakia, from the 22nd-25th March 1967 and attended by about 200 engineers using vacuum tech- niques in their work. Lectures on the fundamentals of high vacuum techniques (L Paty, Prof W Espe, J Neumann, J Buril, R Harman, P Hix and J Vodera) covered the essential theory and design practice in industrial systems. G Egert, A Hix, K Novotny and J Mrazek reported on typical systems and instruments using commer- cially available equipment manufactured by Leybold’s Nachfolger (Cologne, West Germany), Heraeus Hochvakuum GmbH (Hanau, West Germany) VEB Hoch- vakuum (Dresden, East Germany), Veeco Instruments Ltd (England) and Edwards High Vacuum Ltd (Crawley, England). These reports were simultaneously trans- lated into Czech.

A small exhibition took place during the course, showing typical products of Laboratomi Pristroje (Prague, Czechoslo- vakia), Leybold’s and Heraeus. Veeco’s MS-9 leak detector was shown in operation. Film shows were also given on leak detec- tion. vacuum metallurgy and freeze- dry&g.

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This well organized meeting indicates the increasing &portance of hc& vacuum techniques in Czechoslovak industry and similar courses will be held in future years, again organized by the House of Tech- nology CSVTS, Prague, Czechoslovakia. It is hoped that these future meetings will be more specialised and so permit dis- cussion of more practical aspects.

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