Radially restricted linear energy transfer for high-energy protons: A new analytical approach

Chen, J.; Kellerer, Albrecht M. and Rossi, H. H. (1994): Radially restricted linear energy transfer for high-energy protons: A new analytical approach. In: Radiation and Environmental Biophysics, Vol. 33, No. 3: pp. 181-187

Abstract

Radially restricted linear energy transfer (LET) is a basic physical parameter relevant to radiation biology and radiation protection. In this report a convenient method is presented for the analytical computation of this quantity without the need for complicated simulation. The method uses the energy-re-stricted LETL, as recently redefined in a 1993 ICRU draft document and supplements it by a relatively simple term that represents the energy of fast rays lost within distancer from the track core. The method provides a better fit than other models and is valid over the entire range of radial distance from track center to the maximum radial distance traveled by the most energetic secondary electrons.L r computed by this approach differs only a few percent from the values Contribution to the international symposium on heavy ions research: space, radiation protection and therapy, 21–24 March 1994, Sophia-Antipolis, France

• Item Type: Journal article
• Faculties: Medicine
• Subjects: 600 Technology > 610 Medicine and health