Concentration

K @ 1.46 MeV

Th @ 2.61 MeV

U @ 609 keV

200

0.185

0.111

0.209

400

0.368

0.222

0.419

600

0.552

0.332

0.629

800

0.735

0.442

0.838

1000

0.919

0.552

1.048