Measurements are reported for the value of W̄ (the average energy required to form an ion pair) for hydrogen and oxygen ions in the Rossi-Failla, tissue-equivalent gas mixture. The University of Virginia kevatron linear dc ion accelerator was used to produce the monoenergetic ions. For the six different incident monoenergetic hydrogen ions employed with kinetic energies ranging from 3.72 to 48.24 keV per atom, the values for W̄ ranged from 46.5 to 30.4 eV per ion pair. For the incident monoenergetic oxygen ions employed with kinetic energies of 24.52 and 49.05 keV per atom, values for W̄ of 66.0 and 52.2 eV per ion pair, respectively, were obtained. Thus, a general increase in W̄ with decreased kinetic energy was observed. Comparisons were made with computed W̄ values which are predicted from stopping power theory.
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Research Article| July 01 1973
The Average Energy per Ion Pair, W̄, for Hydrogen and Oxygen Ions in a Tissue Equivalent Gas
Radiat Res (1973) 55 (1): 1–9.
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B. E. Leonard, John W. Boring; The Average Energy per Ion Pair, W̄, for Hydrogen and Oxygen Ions in a Tissue Equivalent Gas. Radiat Res 1 July 1973; 55 (1): 1–9. doi: https://doi.org/10.2307/3573806
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