Type of source

Container thickness (cm)

Dose (μSv/h)

¹⁹²Ir

10 cm

0.33496

⁶⁰Co

22.5 cm

1.47

¹³⁴Cs

18 cm

0.5156

¹³⁷Cs

12 cm

0.459

¹³¹I

10 cm

0.509

⁹⁹Tc

< 1.0 cm

0.1