Dose Course 2018_Flipping book

TRS-398: formalism for reference dosimetry

Reference dose with air-filled ionisation chambers

water

water

f

f

   

   

   

   

k N M D 

=



  

  

  

  

  

  

W

S

S

ref

ref

air

p

p

Q Qw,

Qw, D,

QQ,

o

o

Q

Q

e





Q

air

air

Q

Q

k

=



water

water

   

   

   

   

oQQ,

  

  

  

  

  

  

W

S

S

air

p

p

Q

Q

e





0

0

Q

air

air

0

Q

Q

0

0

0.3%

0.8%

Eklund & Ahnesjo, PMB, 53 (2008) 4231-4247