Measurement Profiles of Nanoscale Ion Beam for Optimized Radiation Energy Losses - Atomic Nanoscale Technology in the Nuclear Industry - page 79

0.075

0.070

H+ Pancreas

H+ yroid

0.065

0.060

0.055

0.050

0.045

0.040

0.035

0.030

0.025

100 120 140 160 180 200

Energy (MeV)

FIGURE 7.2
Ionizations.in.organs (at.600.nm.depth).

100

Ne+ Pancreas
H+ Pancreas

10

1

0.1

0.01

100 120 140 160 180 200

Energy (MeV)

FIGURE 7.3
Ionizations.in.pancreas (at.600.nm.depth).

two. organs. increases. about. 180%. as. the. energy. is. doubled,. which. is. seen.
in.Figure 7.3..The.neon.ion.has.larger.energy.losses.than.the.proton,.which.
is.related.to.the.higher.dose.in.tumor.depth.for.the.heavier.ion.(Heidelberg.
Ion-Beam.Therapy.Center.2007)..The.energy.losses.decrease.linearly.in.the.
pancreas..Figures 7.4.and.7.5.show.the.energy.recoils..In.the.pancreas,.proton.
energy.loss.increases.while.neon.ion.energy.loss.decreases,.which.is.seen.as.
the.black.color.in.Figures 7.4.and.7.5..The.interesting.thing.is.that.the.energy.
loss. changes. around. 160. MeV. in. each. igure.. This. energy. is. an. important.
point.with.respect.to.clinical.purpose..The.neon.ion.has.the.higher.energy.
recoil..The.temperature.distribution.of.protons.is.shown.for.simulations.of.
the.pancreas..The.trend.is.similar.to.the.energy.to.recoil.and.the.lowest.tem-
perature.is.shown.at.150.MeV.