Hair Follicle Response to the Variable l.e.t. of a
Helium Ion Beam
B.M. De Rey A1, O.A. Bernaola A1,
R. Mazzei A1, G. Suquet A1
A1 Radiobiology Department, National
Atomic Energy Commission Avda. del Libertador 8250, Buenos Aires,
Argentina
Abstract:
A homogeneous population of hair follicles in the rat
tail has been used to analyse the in vivo response of a
biological system to heavy particle irradiation. The conical
configuration of the rat tail gives rise to a variable energy
degradation of the beam thus yielding information on the damage
elicited by the increasing l.e.t. of the helium beam at different sites
on the same sample. By means of scanning electron microscopy three
different zones were observed as direct evidence of helium ion
penetration in the tail. Quantitative evaluation of radiation damage
yielded results concerning hair follicle damage after increasing doses
for different regions of the ionization curve.
Keywords:
Helium Ions, Hair Follicles, Bragg-peak
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