scholarly journals Materials Characterization Center. Second workshop on irradiation effects in nuclear waste forms. Summary report

1982 ◽  
Author(s):  
W.J. Weber ◽  
R.P. Turcotte
Keyword(s):  
Nuclear Waste ◽  
Materials Characterization ◽  
Summary Report ◽  
Irradiation Effects ◽  
Waste Forms ◽  
Nuclear Waste Forms

Results from a One-Year Leach Test: Long-Term Use of Mcc-L

1981 ◽  
Vol 11 ◽  
Author(s):  
D. M. Strachan
Keyword(s):  
Pacific Northwest ◽  
Nuclear Waste ◽  
Chemical Properties ◽  
Materials Characterization ◽  
Performance Measurements ◽  
Waste Forms ◽  
One Year ◽  
Nuclear Waste Forms ◽  
And Chemical Properties

The Nuclear Waste Materials Characterization Center at Pacific Northwest Laboratory is developing standard tests to obtain data on nuclear waste forms, barriers, and backfills. These tests include performance measurements of thermal, radiation, mechanical, and chemical properties. Five tests have been developed to determine the chemical durability of waste forms under either static (MCC-IP and MCC-2P) or flowing (MCC-4S and MCC-5S) leaching environments. Maximum credible release by waste forms is determined using powders and stirred solutions (MCC-3S).

Alpha-particle irradiation effects on uranium-bearing Gd 2 Zr 2 O 7 ceramics for nuclear waste forms

2017 ◽  
Vol 37 (2) ◽  
pp. 779-785 ◽  
Author(s):  
Xiaoyan Shu ◽  
Long Fan ◽  
Yi Xie ◽  
Weidong Zhu ◽  
Sheqi Pan ◽  
...  
Keyword(s):  
Nuclear Waste ◽  
Alpha Particle ◽  
Irradiation Effects ◽  
Waste Forms ◽  
Particle Irradiation ◽  
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
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