Calculate Depth of Water & Shielding for X-Rays (10MeV)

[klystronman]

how do i calculate the depth of water an electron takes to stop at different energies?
( for instance at 10MeV is 6cm) would it be a dirrect relationship?
Also i need to know how to calculate shielding for the xrays created. Thickness of concrete? (per MeV)
thanks

 

[klystronman]

i was just wondering because of the international linear collider is such high energies:

 

[malawi_glenn]

how do i calculate the depth of water an electron takes to stop at different energies?
( for instance at 10MeV is 6cm) would it be a dirrect relationship?
Also i need to know how to calculate shielding for the xrays created. Thickness of concrete? (per MeV)
thanks

Bethe-bloch formula

http://en.wikipedia.org/wiki/Bethe-Bloch_formula

and

http://www.medcyclopaedia.com/library/topics/volume_i/a/absorption_exponential_law.aspx

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