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Published August 1, 1952 | public
Journal Article Open

The stopping cross section of D2O ice

Abstract

The energy loss of protons and deuterons in D2O ice has been measured over the energy range Ep=18-541 kev using the double focusing magnetic spectrometer to measure the energy of the particles after they have traversed a known thickness of the ice target. One method of measurement is used to determine relative values of the stopping cross section as a function of energy, another method measures the absolute values. The results are in very good agreement with the values calculated from Bethe's semi-empirical formula. Possible sources of error are considered and the accuracy of these measurements is estimated to be ±4 percent.

Additional Information

©1952 The American Physical Society. Received 21 April 1952. We are indebted to Dr. A. P. French of Pembroke College, Cambridge, for valuable discussions of the earlier work on this problem and to Dr. R. G. Thomas, of this laboratory, for advice on the calculations in Appendix A. Assisted by the joint program of the ONR and AEC.

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Created:
August 21, 2023
Modified:
October 16, 2023