Practice of Kinetics (Comprehensive Chemical Kinetics, Volume 1)

442 INDEXphotoelectric measurement, and Bourdongauge, 13—, and Toepler pump, 31photoionisation, 284, 308photolysis, see photochemical and flash photolysisphotomultipliers, see photocellsphotosensitisation, 77photosynthesis, study by flash photolysis, 121phthalocyanine, flash photolysis of, 55physical adsorption, definition of, 180piezoelectric crystals, to measure shock velocity,128pinhole sampling, for mass spectroscopy, 298,305pipette method, for determination of explosionlimits, 20, 21pistons, for circulating pumps, 232—, in adiabatic compression apparatus, 127platinum, adsorption of CO on, IR study, 216—, adsorption of O a on, magnetic susceptibilitystudy, 208—, chemisorption on, 190—, cleaning surface of, 181, 182, 185—, preparation of film of, 183—~, radioactive, for study of CO oxidation,246platinum electrode, for semiconductivity determination,214, 215—, for vibrating condenser method, 207platinum leak, for mass spectroscopy of ionsin flames, 307platinum resistance thermometer, 9—, for atom determination, 325platinum ribbons, and Langmuir trough, 267platinum sensors, in shock tubes, 126platinum slide, for surface area-pressure measurements,264plug flow, and catalytic reactors, 233Plutonium, in ionising electrode method, 268point source lamps, 46, 48, 49Poiseuille's equation, 29polarimetry, 96polarisation, at electrodes and T-jump, 136polarised light, to detect phase changes, 256polarography, for analysis, 96—, for fast reactions, 158-162polonium, in ionising electrode method, 268polyacrylonitrile, trapped radicals in, ESR study,311polymer films on vessel walls, 11polymerisation, and dilatometry, 22—, ESR studies of, 311—, Hg lamps for, 44—, of crystalline trioxane, 255—, of isoprene, processing data from, 409-418—, radical lifetimes in, 48—, study of using interferometry, 103polymethylmethacrylate, ESR study of radicalsfrom, 310polypropylene glycol, as stationary phase ingas chromatography, 80polythene, in vacuum taps, 7population mean, 371, 376, 377pore diffusion, in catalysts, 224-226, 230, 251,252pore radius, and diffusion coefficient, 225— volume, —, 226pore size distribution, in catalysts, 226porous structure, of evaporated films, 183porous support, for catalyst, 221positive ions, see ionspotassium, chemisorption on, 190—, excited, from Na-f-KBr, 288—, preparation of films of, 183—, reaction + Br 2 , 288—, reaction + CHJ, molecular beam study,173, 175—, reaction + F 2 , 249—, spectrum of in matrix, 334potassium bromide, excited, from K+Br a , 288—, windows of for IR cell, 219potassium chloride, as inert electrolyte in electroreduction,157—, as vessel coating, 11—, clean surface by cleavage, 184—, isotopic exchange 4* HO, 249potassium iodide, dissolution of metals by, 253—, scattering of from K and CH 3 I molecularbeams, 175potassium perchlorate, decomposition of, 247potential probe, for conductivity determination,212, 215, 216potentiometer, use in conductivity determination,212, 215potentiostatic method, for electroreduction,158power supply, for omegatron, 241, 242precipitated catalysts, 221pre-exponential factor, and NO -j- O a reaction,289—, and thermograms, 257-259—> calculation of, 404-406—, for CH 3 +halogens and H halides, 74—» for radical reactions, 3, 4—, of KH-D.O, 317—, of N+0,,467—, of O+N^O, 318pre-mixed flames, see flamespreparative gas chromatography, 81