Nitrogen dioxide (N0 ) is notorious for its complex visible spectrum and has 2 frustrated many chemists and physicists. Despite their intense investigations the molecule still resists complete analysis of its spectrum. Because of the high density of lines, it is apparent that high-resolution measurements are essential to a thorough understanding of the spectrum. The major part of this book consists of an atlas, described in Chap. 2, of the absorption spectrum and the Stark modulation spectrum of N0 mea­ 2 sured using a cw dye laser. The narrow spectral width as well as the wide scan range of the dye laser made it possible to record the spectra contin­ uously over a wide range with Doppler-limited resolution. In the spectral range 16751-17885 em-I, about 13300 peaks have been observed in the absorption spectrum and their wave numbers, calibrated against Ar lines, are listed in the tables. The Stark modulation spectrum also shown provides useful information about the energy level structures complementary to that obtained from the absorption spectrum.

Inhalt

1 Introduction.- 2 High Resolution Spectral Atlas of NO2 Between 559 and 597 nm.- 2.1 Experimental Details.- 2.1.1 Dye Laser.- 2.1.2 Absorption Spectrum.- 2.1.3 Stark Modulation Spectrum.- 2.1.4 NO2 Samples.- 2.2 Wave-Number Calibration.- 2.3 Using the Atlas.- 2.4 Remarks on the Stark Modulation Spectrum.- 3 Progress in Spectroscopic Studies of NO2 Using Lasers.- 3.1 Laser-Induced Fluorescence.- 3.2 Laser Excitation Spectroscopy.- 3.3 Raman Spectroscopy.- 3.4 Double Resonance and Level-Crossing Spectroscopy.- 3.5 Diode-Laser and Color-Center-Laser Applications.- 3.6 Laser Magnetic Resonance.- 3.7 Other Studies.- 4 Selected Bibliography 1978-1983.- 4.1 Theoretical Studies and Data Compilation.- 4.2 Microwave and Millimeter-Wave Spectroscopy.- 4.3 Infrared Spectroscopy.- 4.4 Visible and uv Spectroscopy (? < 1 µm).- 4.5 Double Resonance and Level-Crossing Spectroscopy.- 4.6 Fluorescence Lifetimes and Cross-Section Measurements.- 4.7 Other Experimental Studies.- Atlas of Absorption and Stark Modulation Spectra.- References.