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Evidence for an intermediate state in the production of energetic neutral excitations in He II

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Abstract

It has been shown that energetic neutral excitations are produced when a tritium (β− emitter) source is immersed in He II. These neutrals have the same characteristics as those observed by Surko and Reif for a210Po (α emitter) source. However, a strong electric field in the ionization region of the source is required in the tritium case to produce neutrals. Using this effect it is possible to produce pulses of neutrals and obtain information about their physical properties. We suggest a three-level decay scheme with an intermediate state to explain our experimental results.

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Authors and Affiliations

  1. Department of Physics, University of Oregon, Eugene, Oregon

    R. P. Mitchell & G. W. Rayfield

Authors
  1. R. P. Mitchell
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  2. G. W. Rayfield
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Additional information

This work was supported by the National Science Foundation (GP-29659).

Tektronix Fellow.

Alfred P. Sloan Fellow.

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Mitchell, R.P., Rayfield, G.W. Evidence for an intermediate state in the production of energetic neutral excitations in He II. J Low Temp Phys 12, 439–447 (1973). https://doi.org/10.1007/BF00654949

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  • DOI: https://doi.org/10.1007/BF00654949

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