Sickafus et al. in "Radiation Tolerance of Complex Oxides" (4 August, p. 748) note "that compounds with the fluorite structure are especially stable to a displacive radiation damage environment" and propose that fluorite structure-types, such as Er2Zr2O7, have important applications in nuclear waste management. The most obvious application is plutonium immobilization. We earlier proposed Gd2Zr2O7 for plutonium immobilization ( ) based on our discovery of the radiation resistance of compositions in the gadolinium-zirconate system (1,2) and the high neutron cross-section for Gd. This letter clarifies the need for radiation-resistance and comments on the stability of fluorite structure types.
Revised: September 27, 2000 |
Published: September 22, 2000
Weber W.J., and R.C. Ewing. 2000."Plutonium Immobilization and Radiation Effects."Science 289, no. 5487:2051-2052.PNNL-SA-33589.