Experimental And Theoretical Studies On The Photochemistry Property Of The Alternatives Of Freon And The Study Of Premixed Gasoline/Oxygen Flame With Tunable Synchrotron VUV Photoionization

The dissertation includes two parts: (1) The experimental and theoretical studies onthe photochemistry property of the alternatives of Freon (2) The study of premixedgasoline/oxygen flame with tunable synchrotron VUV photoionization.Part 1: Experimental and Theoretical Studies on the PhotochemicalProperty of the Alternatives of FreonChapter 1: It firstly introduces the study on atomic and molecular physics using photochemical methods. The basic conceptions, including adiabatic ionization energy, vertical ionization energy, superexcited states, photoionization cross section, rydberg states, dissociation and predissociation are discussed in detail. The common experimental methods, such as photoinization mass spectrometry, fluorescence spectrum, photoabsorption spectrum photoelectron spectrum and photoelectron-photoion coincidence technology are also introduced in the third section. Finally, the theoretical calculation methods involved in photoionization and photodissociation study are described.Chapter 2: Firstly, the advantages of synchrotron radiation light source, the parameters of storage ring of National Synchrotron Radiation Laboratory (NSRL) and the structure of U10 beamline are introduced. Secondly, the operating principle of Combustion and Flame Endstation is discussed briefly. Finally, the formation principle of molecular beam, the operating principle of mass spectrometer and photoabsorption chamber are described.Chapter 3:Section 1: The reasons, background and significance of the study of the alternatives of Freon are discussed.Section 2: It introduces experimental and theoretical methods of the study of the alternatives of Freon.Section 3 and section 4: The photoionization and photodissociation studies of alternatives of Freon, which contain HCFCs(HCFC-22, HCFC-141b, HCFC-142b) and HFCs(HFC-134a, HFC-125, HFC-152a) are discussed in detail using the synchrotron radiation single photoionization technique, photoabsortion technique, supersonic molecular beam technique and ab initio calculation. The ionization energies of parent molecules and theIX...