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A crystal cleavage device for use in LEED-Auger studies
Classified abstracts 156-l
57
are measured. The measured gas quantity and time are plotted on a linear scale. The diffusion and solubility coefficients calculated by the Daynes method are presented in a nomogram for 8 gases and vapours and 3 elastomers. (Lichtenstein) Th Kraus and E Zollinger, Vukuum-Tech, 23 (2), 1974, 4@46 (in
can be cycled between liquid helium temperatures and 1725°C and show good stability and low vapour pressure at high temperatures. L Bogart and I Ben-Zvi, Reo Sci Instrum, 45 (5), 1974,713-714.
German).
49. MISCELLANEOUS
45. SOLDERING,
WELDING,
BRAZING,
SOLDERS
45 156. A sapphire to niobium vacuum seal for the temperature range 2-2000 K. (USA) A single step brazing process has been developed for producing vacuum tight seals between sapphire and niobium. These assemblies
MATERIALS
AND TECHNIQUES
49 157. A crystal cleavage device for use in LEED-Auger studies. (UK) A device for uhv cleavage of crystal specimens is described for use with LEED-Auger apparatus. The device is designed to minimize stress on the crystal holder and to be entirely removable from the area in front of the LEED screen. A P Janssen and A Chambers, J Phys E-Scient Instrum, 7 (6), 1974, 425-426.
Announcement Authors are advised that in future tables will be directly reproduced by the printer and not type-set. This will materially reduce costs of publication and reduce .znttinr. rlnl~,re TDhlnc chrr,,lrl u-z ha e,mhm;ttnA iv. q $nwm c,,;tc,hln 4mv rl;met rnnrr\A, mr.t;r\n 5c-zLL11 ,y uczmya. lcaU1c73 311”UIU 3UUIIIIIIGU III a l”llll a”,l.a”IG I”1 UIIGbL IGpl”u”bLl”ll. The guidelines detailed below should be followed : 1. Tables should be typed to a maximum width of 11 in. in order to fit on one
page when reduced. 2. Large or long tables should be typed on continuing
sheets.
3. Table headings should be typed in separate sheets. 4. Original typed tables are required. It will be the author’s responsibility to prepare his tables in accordance with this procedure, as no facilities exist at the Editorial Office for retyping.
57
are measured. The measured gas quantity and time are plotted on a linear scale. The diffusion and solubility coefficients calculated by the Daynes method are presented in a nomogram for 8 gases and vapours and 3 elastomers. (Lichtenstein) Th Kraus and E Zollinger, Vukuum-Tech, 23 (2), 1974, 4@46 (in
can be cycled between liquid helium temperatures and 1725°C and show good stability and low vapour pressure at high temperatures. L Bogart and I Ben-Zvi, Reo Sci Instrum, 45 (5), 1974,713-714.
German).
49. MISCELLANEOUS
45. SOLDERING,
WELDING,
BRAZING,
SOLDERS
45 156. A sapphire to niobium vacuum seal for the temperature range 2-2000 K. (USA) A single step brazing process has been developed for producing vacuum tight seals between sapphire and niobium. These assemblies
MATERIALS
AND TECHNIQUES
49 157. A crystal cleavage device for use in LEED-Auger studies. (UK) A device for uhv cleavage of crystal specimens is described for use with LEED-Auger apparatus. The device is designed to minimize stress on the crystal holder and to be entirely removable from the area in front of the LEED screen. A P Janssen and A Chambers, J Phys E-Scient Instrum, 7 (6), 1974, 425-426.
Announcement Authors are advised that in future tables will be directly reproduced by the printer and not type-set. This will materially reduce costs of publication and reduce .znttinr. rlnl~,re TDhlnc chrr,,lrl u-z ha e,mhm;ttnA iv. q $nwm c,,;tc,hln 4mv rl;met rnnrr\A, mr.t;r\n 5c-zLL11 ,y uczmya. lcaU1c73 311”UIU 3UUIIIIIIGU III a l”llll a”,l.a”IG I”1 UIIGbL IGpl”u”bLl”ll. The guidelines detailed below should be followed : 1. Tables should be typed to a maximum width of 11 in. in order to fit on one
page when reduced. 2. Large or long tables should be typed on continuing
sheets.
3. Table headings should be typed in separate sheets. 4. Original typed tables are required. It will be the author’s responsibility to prepare his tables in accordance with this procedure, as no facilities exist at the Editorial Office for retyping.