After decades of research and development, emission detectors have recently become the most successful instrumentation used in modern fundamental experiments searching for cold dark matter, and are also considered for neutrino coherent scattering and magnetic momentum neutrino measurement. This book is the first monograph exclusively dedicated to emission detectors. Properties of two-phase working media based on noble gases, saturated hydrocarbon, ion crystals and semiconductors are reviewed.Contents:Hetero-phase Detectors and History of Development of Emission DetectorsEmission of Charge Carriers from Working Media of Emission DetectorsGeneration of Signals in Massive Emission DetectorsEmission Ionization ChambersEmission Detectors with Physical Amplification of SignalsImaging Emission DetectorsEmission Detectors for Low-background Experiments; Applications of Emission DetectorsReadership: Detector physicists and experimentalists, nuclear engineers, materials scientists, and advanced graduate students in physics and medical imaging.