About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 77. Chapters: Electron configuration, Molecule, Molecular orbital, Energy level, X-ray photoelectron spectroscopy, Macromolecule, X-ray fluorescence, Positronium, Ionization energy, Odd molecule, Molecular Hamiltonian, Force field, Rigid rotor, Franck-Condon principle, Constraint algorithm, Macromolecular docking, Electron affinity, Eckart conditions, Molecular mechanics, Huckel method, Cubic harmonic, Interatomic Coulombic Decay, Coordination geometry, Molecular term symbol, GF method, Hysteresivity, Cell lists, International Academy of Quantum Molecular Science, ISO 31-8, Gaussian orbital, Ultraviolet photoelectron spectroscopy, Molecular binding, Renner-Teller effect, LeRoy radius, Cohesion, Intramolecular reaction, Pariser-Parr-Pople method, Jablonski diagram, Dumas method of molecular weight determination, Stockmayer potential, Localized molecular orbitals, Electrostatic deflection, Molecular spring, Reaction coordinate, Positronium hydride, Vibrational energy relaxation, Di-positronium, RRKM theory, Molecular autoionization, Atomicity, Thermal stability, Rotational temperature, Chromonic, Molecular attraction, Vibrational temperature, Lewis pair, Spin probe, Secondary ionization. Excerpt: X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology. Physics of X-ray fluorescence, in a schematic representation.When materials are exposed to short-wavelength X-rays or to gamma rays, ionisation of their component atoms may take place. Ionisation consists of the ejection of one or m...
