868 / 1224
Figure from: Nunn et al, Med. Phys. 38(8) 1859 (2008)
TLD: intrinsic energy dependence
•
In the light of studies indicating =1 within
experimental uncertainties (i.e. Das et al
1996) k
bq
was disregarded by most
experimentalists
Figure from: Davis et al, Radiation Protection Dosimetry Vol.
106, No. 1, pp. 33–43 (2003)
•
Until Davis et al (2003) measured TLD100
over-response at low E due to LET increase
and the race to determine k
bq
was on …!
rel
bq
k
1
rel
bq
k
)0( )0(
) ( ) (
)0 , (
QMQ TLDD
QM
Q TLD
D
QQ rel
bq
k
=