The first edition of Professor Duckworth's Mass Spectroscopy was highly praised. The present volume is a 1990 edition of the 1986 second edition, written by Professor Duckworth and two other scientists, both with extensive experience in the field. The authors describe the principles of mass spectroscopy and the uses to which mass spectrometers are put. Following a brief description of early instruments, the text describes ion optics, sources and detectors, deflection-type instruments, non-magnetic instruments, isotopic abundance and atomic mass determinations. The book also contains descriptions of the applications of the instrument to nuclear physics, organic chemistry, physical inorganic chemistry, solid state physics, geophysics and space physics.