Nuclear Quarupole Resonance Spectroscopy

Contents

• 2.1 Introduction
• 2.2 Basic Theory
• 2.2.1 The Nuclear Electric Quadrupole Interaction
• 2.2.2 Energy Lefvels and Transition Frequencies
• 2.2.3 Excitation and Detection
• 2.2.4 The Effect of a Small Static Magnetic Field
• 2.2.5 Linewidths and Relaxation Times
• 2.3 Instrumentation
• 2.3.1 CW Spectrometers
• 2.3.2 Pulsed Spectrometers
• 2.3.3 Field Cycling NQR Specrometers
• 2.3.4 Some Less Common NQR Detection Schemes
• 2.4 Interpretation of Coupling Constants
• 2.4.1 Molecular Crystals and Covalently Bonded Groups
• 2.4.2 Ionic Crystals
• 2.4.3 Metals
• 2.4.4 Sternheimer Shielding/Antishielding
• 2.5 Summary
• References
• Bibliography