Exposure buildup factors for bakelite, perspex and magnox-A12 up to 40 m.f.p. using the interpolation method

A study of energy and effective atomic number dependence of the exposure build-up factors in biological samples

“…Several authors (Hubbell 1963, Chilton 2.0 2.0 1.2 0.9 8.000 3.7 1.8 1.5 0.9 10.000 3.9 1.9 1.7 0.9 15.000 2.9 2.0 1.3 1.0 et al 1980, Harima 1983, Sakamoto et al 1988 have provided different build-up factor data for extensive utilization in design of radiation shields all over the world. Recently attempts have also been made in our group (Brar et al 1994, Brar and Mudahar 1995, 1996 to generate build-up factor data in different composite materials (Perspex, Bakelite, soils, HCO-materials). Different workers such as Taylor (1954), Capo (1958) and Jacob et al (1984) have proposed different fitting formulae to approximate the build-up factor.…”

Computation of exposure build-up factors in teeth

“…Several authors have provided different build-up factor data for extensive utilization of design in radiation shields and for other purposes (Hubbell, 1963;Chilton et al, 1980;Harima, 1983;Sakamoto et al, 1988;Brar et al, 1994;Brar and Mudahar, 1995). American National Standard (ANS) (1991) ANSI/ANS 6.4.3 used the G-P fitting method and provided build-up factor data for 23 elements, water, air and concrete at 25 standard energies in the energy range 0.015-15 MeV with suitable interval up to the penetration depth of 40 mean free path.…”