“…Several investigators (Faddegon, Ross, & Rogers, 1992;Feist & Muller, 1989;Fregene, 1976;Goldwasser, Mills, & Hanson, 1952;Hall, Hanson, & Jamnik, 1959;Hereford, 1948;MacPherson, 1984;Mikado & Tomimasu, 1983;Westmark, 1961) have measured the stopping power of electrons in different absorbers at energies greater than 5 MeV. But only few measurements are carried out in the low energy region.…”