Source

Transmission Through 20 cm of Material ${\text{e}}^{-\left(\mu \left(E,Z\right)\cdot \rho \cdot 20\left[\text{cm}\right]\right)}$

Energy, E [keV]

C (Z = 6)

Al (Z = 13)

Cu (Z = 29)

Sn (Z = 50)

Pb (Z = 82)

X-ray Tube

200

3.80e−3

1.35e−3

7.36e−13

2.13e−21

4.36e−99

¹⁵²Eu

344

1.01e−2

4.84e−3

1.02e−8

2.06e−9

6.04e−31

¹⁵²Eu

779

1.48e−2

1.48e−2

1.16e−6

7.17e−6

5.10e−13

¹⁵²Eu

1086

6.25e−2

4.12e−2

3.96e−5

3.16e−4

3.16e−7

¹⁵²Eu

1408

6.47e−2

4.28e−2

4.50e−5

3.55e−4

4.35e−7