Biomedical Engineering Reference
In-Depth Information
between desorption of noble and active gases from UDD having
different surface chemistry [62]. We have observed, however, that
LT-peak intensity of Xe increased if Xe-ions were implanted into
UDD irradiated preliminary by Ar-ions for creation of defects in the
diamond core. Hence, the LT-peak of noble gases could be caused by
thermal escape of atoms trapped on the defect sites in diamond.
40
Nanodiamond
20
0
Carbon soot
20
10
0
Micron sized diamond
20
10
0
400
800
1200
1600
Tem perature,
o
C
Figure 6.12
Implanted Kr (700 eV, ~10
14
ion/cm
2
) release from carbon
materials of different structure.
Different type of carbon materials were used in ion implantation
experiments to understand the peculiar features of UDD. Figure 6.12
