Computed LET distributions in the build-up region of tissue for 14 MeV neutrons.

Abstract:

:Experimental radiobiological investigations of fast neutron beams involve irradiation of thin cell layers. The irradiation of cells is done either in free air or with a material such as graphite, TE plastic or bone-equivalent plastic covering the cells. This paper discusses the computed dose distributions in LET at shallow depths between 5 or 10 micrometers and the equilibrium depth, and the influence of the overlying materials on the distributions. The secondaries considered are elastic recoils of H, C, N and O, and 22 alpha particle groups and the corresponding heavy recoils arising from (n, alpha) events in C, N, O, P and Ca. Dose-average LET and curves of detailed dose distributions in LET as a function of depth in tissue are given for various overlying materials.

journal_name

Phys Med Biol

authors

Bhatia DP,Nagarajan PS

doi

10.1088/0031-9155/24/5/007

subject

Has Abstract

pub_date

1979-09-01 00:00:00

pages

940-9

issue

5

eissn

0031-9155

issn

1361-6560

journal_volume

24

pub_type

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