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Published 1978 | public
Journal Article

Energy spectrum of sputtered uranium—a new technique

Abstract

The fission track technique for detecting ^(235)U has been used in conjunction with a mechanical time-of-flight spectrometer in order to measure the energy spectrum in the region 1 eV to 1 keV of material sputtered from a 93% enriched ^(235)U foil by 80 keV^(40)Ar+ ions. The spectrum was found to exhibit a peak in the region 2–4 eV and to decrease approximately as E^(–1.77) for E ≳ 100 eV. The design, construction and resolution of the mechanical spectrometer are discussed and comparisons are made between the data and the predictions of the random collision cascade model of sputtering.

Additional Information

© 1978 Gordon and Breach Science Publishers Ltd. Received October 11, 1977; in final form January 2, 1978. Supported in part by the National Science Foundation [PHY76-83685) the National Aeronautics and Space Administration [NGR 05-002-333), and the Energy Research and Development Administration [EX-76-G-03-1305). The authors wish to thank D.S. Burnett, J.E. Griffith, R. Gregg and S. Streight for many useful discussions during the course of this work and also to express appreciation to F. Meulemans, W. Schick, and D. Wasserburg who aided in the apparatus construction and data taking.

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023