Spectra of linear energy transfer along the range of 500 MeV carbon ions beam

The contribution describes the results of experimental studies performed at the Joint Institute for Nuclear Research (JINR) with 12C ion beam of primary energy 500 MeV/amu. Depth dose distributions of linear energy transfer (L) spectra and the dosimetry characteristics deduced from them have been established by means of an L-spectrometer based on chemically etched track detectors (TED), chemically polyallyldiglycolcarbonate. Experimentally established average L-values increase from about 10 keV/μm at the beam entrance to about 100 keV/μm in the region of the Bragg peak. At the same time, important widening of L-spectra is observed along the range.Depth dose distributions deduced from the L-spectrometer data are compared with those measured by means of diamond detector. A reasonable correlation of results is found.