Unique information about the motion and correlation of valence electrons in atoms, molecules and their ions is obtained from electron-impact ionization reactions near the Bethe ridge at total energies of the order of 10oO eV or higher. This is electron momentum spectroscopy. The history, theory and practice of the field are discussed and its value is shown by numerous examples.

Weigold, Erich. Electron momentum spectroscopy / Erich Weigold and lan E. McCarthy. p. cm. --(Physics of atoms and molecules) Includes bibliographical references and index.

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