“…high pressure tissue equivalent ionization chambers, where initial recombination is present can be used to predict LET (Zielczynski and Golnik 1994, Golnik et al 2004, 2007. Blanc et al (1965) used liquid ionization chambers (LICs) and developed an experimental method to distinguish between radiation qualities with differences in LET. This method was later used by several authors (Ladu and Pelliccioni 1966, Charalambus 1967, Nakayama and Kawano 1970, Bednarek et al 1976, Chu et al 1980.…”