Microdosimetry near the trajectory of high-energy heavy ions. Academic Article uri icon


  • Single-event energy distributions were measured in a 1.3-micron-diameter site as a function of radial distance from the trajectory of high-energy iron ions having an energy of about 600 MeV/amu. It was found that beyond distances of a few micrometers the average lineal energy of the (mostly single) secondary electrons (delta rays) is of the order of 3 keV/micron. This is similar to the value found in a medium irradiated by 170-keV photons. The frequency-mean specific energy for delta rays occurring at large distances from the path of the primary ion exceeds the calculated (radial) absorbed dose by two orders of magnitude.

published proceedings

  • Radiat Res

author list (cited authors)

  • Metting, N. F., Rossi, H. H., Braby, L. A., Kliauga, P. J., Howard, J., Zaider, M., ... Rapkin, M.

citation count

  • 52

complete list of authors

  • Metting, NF||Rossi, HH||Braby, LA||Kliauga, PJ||Howard, J||Zaider, M||Schimmerling, W||Wong, M||Rapkin, M

publication date

  • November 1988