ELECTRON MULTIPLIERS AND STATISTICS OF SECONDARY ELECTRON EMISSION.

Abstract

Electron multipliers are extremely sensitive ion detectors which possess very high speeds of response, high detection efficiency and low noise" I will discuss the electron multiplier detector mainly as it is used in the pulse-counting mode and will point out some of its advantages and limitations.The secondary electron multiplication process will be described in terms of a Polya statistical model and its generality will be demonstrated by fitting it to a wide range of shapes of observed pulse-height distributions.The Polya model gives one considerable insight into the secondary electron multiplication processes in electron multipliers and in related pulse-counting detectors.For example, it shows how the target or conversion dynode dominates the statistical behavior of an entire detector.Using an AI2O3 target surface, we have made preliminary measurements of secondary electron yield as a function of ion mass, impact velocity and angle of entry.These results will be described.Also, practical considerations in using electron multipliers in either the dc or pulse-counting modes will be mentioned.

Cite this paper

@article{dietz1970electron,
  title = {{ELECTRON MULTIPLIERS AND STATISTICS OF SECONDARY ELECTRON EMISSION.}},
  author = {Dietz, L. A.},
  journal = {OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)},
  year = {1970},
  doi = {10.2172/4142565}
}

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