Spectroscopy de B. Straughan

Spectroscopy: Volume Three

B. Straughan

en Limba Engleză Paperback – 10 iun 1976

It is fifteen years since Walker and Straw wrote the first edition of 'Spectroscopy' and considerable developments have taken place during that time in all fields of this expanding subject. In atomic spectroscopy, for example, where the principles required in a student text have been laid down for many years, there have been advances in optical pumping and double resonance which cannot be neglected at undergraduate level. In addition, nuclear quadrupole resonance (n.q.f.) and far infrared spectroscopy now merit separate chapters while addtional chapters dealing with Mbssbauer spectroscopy, photoelectron spectroscopy and group theory are an essential requisite for any modern spectroscopy textbook. When the idea for a new edition of Spectroscopy was first discussed it quickly became clear that the task of revision would be an impossible one for two authors working alone. Consequently it was decided that the new edition be planned and co-ordinated by two editors who were to invite specialists, each of whom had experience of presenting their subject at an undergraduate level, to contribute a new chapter or to revise extensively an existing chapter. In this manner a proper perspective of each topic has been provided without any sacri fice of the essential character and unity of the first edition. The expansion of subject matter has necessitated the division of the complete work into three self contained volumes. Volume I includes atomic, n.m.f., n.q.f., e.s.r. and Mbssbauer spectroscopy.

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Cuprins

1 Molecular Quantum Numbers of Diatomic Molecules.- 1.1 Formation of molecular quantum numbers.- 1.2 ‘Scripts’ giving information on the wavefunction symmetry of diatomic molecules.- 1.3 Correlation between atomic and molecular states.- 1.4 Coupling of angular momenta.- 1.5 Selection roles of diatomic molecules.- 1.6 A doubling.- 1.7 c and d classification of rotational levels.- References.- 2 Electronic Spectra of Gaseous Diatomic Molecules.- 2.l Introduction.- 2.2 Instrumentation.- 2.3 Electronic excitation of diatomic species.- 2.4 Electronic spectra of diatomic species in flames.- 2.5 More recent studies of electronic spectra.- References.- 3 Dissociation Energies of Diatomic Molecules.- 3.l Introduction.- 3.2 Evaluation of D by band convergence method.- 3.3 Evaluation of De by extrapolation to convergence limits.- 3.4 Evaluation of D by atomic fluorescence method.- 3.5 Predissociation and its use in evaluating D.- 3.6 Conclusions on the determination of dissociation energies of diatomic molecules.- 3.7 Recent dissociation energy studies for diatomic molecules.- References.- 4 Electronic Spectra of Polyatomic Molecules.- 4.1 Introduction.- 4.2 Absorption of light by a medium.- 4.3 Instrumentation.- 4.4 The electronic states of polyatomic molecules.- 4.5 Interpretation of the absorption spectra of organic compounds.- 4.6 Selection rules for electronic transitions.- 4.7 Electronic spectra of transition metal complexes.- 4.8 Charge transfer spectra.- 4.9 Electronic spectra of short lived species.- 4.10 Some applications to kinetics.- 4.11 Optical rotatory dispersion and circular dichroism.- References.- 5 Fluorescence and Phosphorescence Spectroscopy.- 5.1 Introduction.- 5.2 Fluorescence.- 5.3 Phosphorescence.- 5.4 Excitation spectra.- 5.5 Experimental methods.-5.6 Applications of fluroescence and phosphorescence.- References.- 6 Astrochemistry.- 6.1 Introduction and instrumentation.- 6.2 The Doppler effect.- 6.3 Planetary atmospheres.- 6.4 Spectra of nebulae and forbidden transitions.- 6.5 Spectra of comets.- 6.6 Stellar spectra.- 6.7 Spectral studies of the interstellar medium.- 6.8 Pulsars and quasars.- 6.9 Space probes in the mid-seventies.- References.- 7 Photoelectron Spectroscopy.- 7.1 Introduction.- 7.2 Instrumentation.- 7.3 Chemical information from photoelectron spectroscopy.- 7.4 Solid state surface studies.- 7.5 Surface charging and the calibration problem.- 7.6 Photoelectron intensities.- 7.7 Valence energy level studies.- 7.8 Additional structure in U.V. photoelectron spectra.- 7.9 Core energy level studies.- 7.10 Additional structure in X-ray photoelectron spectra.- References.- A APPENDIX.- A.1 Absorption and emission of radiation.- A.2 Energy levels of a linear rigid motor.- A.3 Selection rules for the linear rigid motor.- A.4 Energy levels of a harmonic oscillator.- A.5 Calculation of the vibrational eigen functions for a diatomic molecule.- A.6 Selection rules for changes in vibration quantum numbers.- A.7 Absolute intensities of absorptions.- A.8 Electronic transition probability and spectral intensity.