Time-dependent 241Am activity in the environment from decay of 241Pu released in the Chernobyl accident

• Title: Time-dependent ²⁴¹Am activity in the environment from decay of ²⁴¹Pu released in the Chernobyl accident

Author: Muravitsky, A.V. / Razbudey, V.F. / Tokarevsky, V.V. / Vorona, P.N.

Reference: Applied Radiation and Isotopes, 63 (4), p.487-492, Oct 2005

doi: 10.1016/j.apradiso.2005.03.018

Keywords: Plutonium isotopes; Spectroscopy; Contamination

Abstract: The time-dependent activity of the alpha-emitting radionuclide ²⁴¹Am, resulting from beta-decay of ²⁴¹Pu present in the accidental release from Unit 4 of the Chernobyl NPP, has been studied. The ratios of the activity of ²⁴¹Pu to those of ^{239, 240}Pu and of ^{238, 239, 240}Pu at the time of the accident have been derived as 69.6+0.6 and 47.1+0.4, respectively. Based on these results, a prediction of the future activity ratio ²⁴¹Am/^238,239,240Pu has been made, showing that it will increase slowly to the value 1 in the year 2005 and to a maximum value of 1.7 at the end of this century, followed by a gradual decrease.

URL: http://www.sciencedirect.com/science/article/pii/S096980430500179X

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