Reference dose with air-filled ionisation chambers
o
o
ref
ref
QQ,
Qw, D,
Q Qw,
k
N M D
f
f
=
0
0
0
0
0
oQQ,
Q
Q
water
air
Q
Q
water
air
Q
Q
water
air
Q
air
Q
Q
water
air
Q
air
p
S
p
S
p
S
e
W
p
S
e
W
k
=
Eklund & Ahnesjo, PMB, 53 (2008) 4231-4247
TRS-398: formalism for
reference
dosimetry
0.3%
0.8%