scholarly journals Workshop on the leaching mechanisms of nuclear-waste forms, October 27-28, 1981. Summary report

1982 ◽  
Author(s):  
J.E. Mendel
Keyword(s):  
Nuclear Waste ◽  
Summary Report ◽  
Waste Forms ◽  
Nuclear Waste Forms

scholarly journals Ab Initio Investigation of Helium Mobility in La2Zr2O7 Pyrochlore

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 667
Author(s):  
Yanxia Lu ◽  
Qing Peng ◽  
Chenguang Liu
Keyword(s):  
Nuclear Waste ◽  
Density Functional ◽  
Minimum Energy ◽  
Elastic Band ◽  
Waste Forms ◽  
Band Method ◽  
And Migration ◽  
High Level ◽  
Migration Pathways ◽  
Nuclear Waste Forms

The α-decay of incorporated actinides continuously produces helium, resulting in helium accumulation and causing security concerns for nuclear waste forms. The helium mobility is a key issue affecting the accumulation and kinetics of helium. The energy barriers and migration pathways of helium in a potential high-level nuclear waste forms, La2Zr2O7 pyrochlore, have been investigated in this work using the climbing image nudged elastic band method with density functional theory. The minimum energy pathway for helium to migrate in La2Zr2O7 is identified as via La–La interstitial sites with a barrier of 0.46 eV. This work may offer a theoretical foundation for further prospective studies of nuclear waste forms.

Using “radioparagenesis” to design robust nuclear waste forms

2010 ◽  
Vol 3 (1) ◽  
pp. 130-135 ◽  
Author(s):  
C. Jiang ◽  
B. P. Uberuaga ◽  
K. E. Sickafus ◽  
F. M. Nortier ◽  
J. J. Kitten ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Waste Forms ◽  
Nuclear Waste Forms

MCC-1: A Standard Leach Test for Nuclear Waste Forms

1982 ◽  
Vol 56 (2) ◽  
pp. 306-312 ◽  
Author(s):  
D.M. Strachan ◽  
R. P. Turcotte ◽  
B. O. Barnes
Keyword(s):  
Nuclear Waste ◽  
Waste Forms ◽  
Leach Test ◽  
Nuclear Waste Forms
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