《RADIOISOTOPES IN SCIENTIFIC RESEARCH VOLUME 1》

SESSION 2A．PRODUCTION OF RADIOISOTOPES-Ⅰ1

Aluminium 26:Properties,Production,Assay,Natural Occurrence,and Potential Usefulness＆by T．P．Kohman,R．A．Rightmire,W．D．Ehmann and J．R．Simanton1

An Approach to the Production of Phosphorus-33 in Millicurie Quantities＆by E．G．T．Westermark,I．G．A．Fogelstrom-Fineman and S．R．Forberg19

The Production of Threshold Reactions in a Graphite Reactor＆by C．E．Mellisk,J．A．Payne and R．L．Otlet35

Development of Methods for the Production of Certain Short-lived Radioisotopes＆by L．G．Stang,Jr．,W．D．Tucker,R．F．Doering,A．J．Weiss,M．W．Greene and H．O．Banks50

New Preparation Methods of Alpha,Beta and Gamma Sources＆by M．S．Petrova,K．G．Shvebelblit,I．I．Balakleyets,V．P．Sytin and V．N．Chessalin71

The Place of Electromagnetic Separation in the Provision of Radioisotopes＆by J．H．Freeman and M．L．Smith82

SESSION 3A″．DOSIMETRY93

Utilisation des verres comme dosimetres industriels＆par F．Balestic P．Le Clerc et M．Bonnaud93

Investigation of Electronic Spectra for the Dosimetry of Beta and Gamma Radiations＆by K．K．Aglintsev,V．P．Kasatkin and V．V．Smirnov109

SESSION 4A．DESIGN AND USE OF STRONG SOURCES122

High-Intensity Cobalt-60 Gamma-Ray Source for Studies in Radiation Chemistry＆by A．Kh．Brager,V．A．Belynsky,V．L．Karpov,S．D．Prokudin and V．B．Osipov122

The Design and Construction of Large Gamma Irradiation Facilities＆by G．S．Murray,R．Roberts and D．Dove139

The Effect of Gamma Irradiation upon Poly(Ethylene Oxides)＆by R．W．Pearson151

Radiation Polymerisation＆by S．S．Medvedev161

Reticulation du chlorure de vinyle sous l＇action des radiations ionisantes＆par C．Wippler174

SESSION 5A．PHYSICS OF METALS185

Self Diffusion in Polycrystalline Platinum＆by G．V．Kidson and R．Ross185

An Investigation of Electric Transport in Solid Solutions of Metals using Radioactive Isotopes＆by I．N．Frantsevich,D．F．Kalinovich,I．I．Kovensky and B．B．Penkovsky194

Study of Grain Boundary Diffusion in Metals＆by V．T．Borisov,V．M．Golikov,B．Y．Ljubov and G．V．Shtsherbedinsky212

Effect of Metal Composition and Structure on Grain Boundary Diffusion＆by S．Z．Bokstein,S．T．Kishkin and L．M．Moroz232

Investigation into Carbon Atoms Mobility and Atomic Interaction in Alloys by the use of Tracer Technique＆by P．L．Gruzin,Y．F．Babikova,Y．A．Polikarpov and G．B．Fedorov249

Tracer Diffusion of Cadmium-115 in Pure Cadmium＆by K．A．Mahmoud and R．Kamel271

Application of Radioactive Isotopes in Solving Diffusion Problems in Metal Theory＆by A．A．Zhukhovitsky,M．E．Janitskaya and A．D．Sotskov279

SESSION 6A．METALLURGY302

Etude de la descente des charges au haut fourneay＆par A．Kohn302

The Use of Radioactive Tracers in the Study of Passive Films on Metals＆by Dora M．Brasher,C．P．De,A．H．Kingsbury and A．D．Mercer326

A Radioisotope Study of the Effect of Surface Conditions during Wear of Tungsten Carbide＆by J．Golden and G．W．Rowe343

Source of Non-metallic Inclusions in Steel Ingot＆by T．Saito,R．Shimanuki and others362

On the Structure and Wear Resistance of Case-Hardened Steel＆by L．S．Palatnik,I．M．Ljubarsky and A．P．Ljubchenko375

An Assessment Trial of the Quality of Refractory Materials used in a Casting Pit and the Distribution of Non-metallic Inclusions in Steel by Means of Radioactive Tracers＆by Z．Bojarski,W．Orzeszko,S．Pawlowski,R．Wusatowski and Z．Ziolowski388

SESSION 7A．INDUSTRIAL APPLICATIONS411

Investigation of the Solubility of Low Volatility Substances in High Pressure Steam by Radioisotopes＆by M．A．Styrikovich411

Fluid Density Measurements in Enclosed Systems＆by J．F．Cameron426

Investigation of the Action of Modifying Agents in Flotation by the use of Radio-active Tracers＆by O．S．Bogdanov,B．Y．Hainman,N．A．Yanis and A．K．Podnek441

Utilisation de l＇iridium 192 pour la mesure des jeux dans les turbines a vapeur＆par J．Favereau et J．Laverlochere453

Investigation of the Process of Heat and Mass Transfer in Capillary-porous Bodies by the Radioisotope Method＆by A．I．Veinik460

Etude de la porosite des revetements＆par M．Bonnemay,H．Makram,M．Royon et M．Grange475

The Structural Defects in Germanium Mono-Crystals Irradiated by Beta Particles and Fast Neutrons,and the Influence of these Defects on Electron-Hole Recombination＆by V．S．Vavilov,L．S．Smirnov,A．V．Spitzin,V．M．Patskevitch,M．V．Chukichev482

Energy of Ionization by Beta-Particles in Crystals of Germanium and Silicon＆by V．S．Vavilov,L．S．Smirnov,and V．M．Patskevitch495

Autoradiographic Study of the Influence of Chlorine on Semi-conducting Alumina Layers＆by B．Verkerk503

Investigations on the U3O6-ZrO6-O2 and U3O6-TiO2-O2 Systems by the Emanation Method＆by G．Wolf,L．Ochs and F．Strassmann516

Radioisotopes in Solid-state Kinetics＆by W．J．Moore528

Measurement of the Relative Mobility of Cations in Mixtures of Oxide Melts＆by V．I．Malkin and L．A．Schwarzman539

Investigations on the Processes of Migration of Proper Ions and Impurity Ions in Crystals of Silver Salts and the Salts of Alkaline and Alkaline Earth Metals＆by A．N．Murin549

SESSION 9A′．SOLID STATE PHYSICS-Ⅱ577

Etude de l＇autodiffusion des ions dans les halogenures alcalins mono-et polycristallins a l＇aide des radioisotopes＆par J．Benard et J．F．Laurent577

The Interaction of Silver Impurity-Atome with a Copper Solvent＆by T．Pyle and R．Shuttleworth598

Thermodynamic Studies of Metallurgical Reactions＆by L．A．Schwarzman609

SESSION 13．METHODS AND TECHNIQUES-Ⅰ626

Nouveau dispositif a scintillations pour le dosage continu de rayonnements β peu penetrants en milieu aqueux et son application a l＇analyse radio-chromatographique＆par E．Schram et R．Lombaert626

Scintillation Counting of Beta Emitters＆by H．H．Seliger637

Emploi de scintillateurs liquides pour la mesure des activites beta molles sur papler filtre avec une bonne sensibilite＆par J．C．Roucayrol,E．Oberhausen et R．Schuler648

Simple Liquid Scintillation Counter for Measuring Tritium and Carbon-14＆by C．P．Haigh663

Very Fine-Grained Emulsions for Nuclear Research＆by N．A．Perfilov,N．R．Novikova and E．I．Prokofyeva675

Measurement of Radioisotopes by the Method of Ionized Airflow＆by F．Behounek692

An Array of Geiger Counters for Measuring Chromatograms or other Distributions of Radioactivity＆by C．W Gilbert and J．P．Keene698

Absolute Alpha Measurement by the Defined Solid Angle Method＆by D．Bek-Uzarov,A．Milojevic707

Absolute Beta-Measurements by a ？ Method＆by V．Adjacic,A．Milojevic and V．Urosevic712

Absolute Measurements of the Number of Disintegrations by Coincidence Methods＆by S．Gvozdanovic-Stankovic723

SESSION 20A728

An attempt to Observe the Capture of Reactor Neutrinos in Chlorine-37＆by R．Davis,Jr．728

The Role Played by the Radioisotopes in the Parity Investigation＆by Chien-Shiung Wu737

The Longitudinal Polarization of Beta-Particles＆by P．E．Cavanagh,C．F．Coleman,B．W．Ridley and J．F．Turner745