Radionuclides

Energy (γ)/keV

Total release probability

⁶⁰Co

1170, 1330

2.00

¹³⁷Cs

661

0.85

⁸⁵Kr

514

0.43

¹³¹I

30, 80, 177, 284, 364, 503, 637, 773

0.97

¹³³Xe

31, 81, 161, 223, 303, 384

0.84