University of Wisconsin Ion Beam Laboratory: A facility for irradiated materials and ion beam analysis

Field, Kevin G.; Wetteland, C. J.; Cao, Guoping; Maier, Benjamin; Dickerson, Clayton; Gerczak, Tyler J.; Field, Christopher R.; Kriewaldt, K.; Sridharan, Kumar; Allen, Todd R.

doi:10.1063/1.4802311

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…ions were accelerated to 3.9 MeV with a Pelletron® tandem accelerator (University of Wisconsin-Madison [27]). The sample temperature was monitored through the irradiations with thermocouples, which were attached to the sample stage right next to the UO 2 disks.…”

Section: Methodsmentioning

confidence: 99%

Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation

Pakarinen

Khafizov

et al. 2014

Journal of Nuclear Materials

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The microstructural changes and associated effects on thermal conductivity were examined in UO 2 after irradiation using 3.9 MeV He 2+ ions. Lattice expansion of UO 2 was observed in x-ray diffraction after ion irradiation up to 5×10 16 He 2+ /cm 2 at low-temperature (< 200 °C). Transmission electron microscopy (TEM) showed homogenous irradiation damage across an 8 µm thick plateau region, which consisted of small dislocation loops accompanied by dislocation segments. Dome-shaped blisters were observed at the peak damage region (depth around 8.5 µm) in the sample subjected to 5×10 16 He 2+ /cm 2 , the highest fluence reached, while similar features were not detected at 9×10 15 He 2+ /cm 2. Laser-based thermo-reflectance measurements showed that the thermal conductivity for the irradiated layer decreased about 55 % for the high fluence sample and 35% for the low fluence sample as compared to an un-irradiated reference sample. Detailed analysis for the thermal conductivity indicated that the conductivity reduction was caused by the irradiation induced point defects.

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Section: Methodsmentioning

confidence: 99%

Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation

Pakarinen

Khafizov

et al. 2014

Journal of Nuclear Materials

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“…The polycrystalline samples of depleted UO 2 were sintered at Los Alamos National Laboratory following the procedure outlined previously [5]. A toroidal volume ion source (Torvis) and Pelletron® tandem accelerator (University of Wisconsin-Madison [11]) were used for the ion irradiations. The irradiation chamber pressure was in the range 10 -6 -10 -7 mbar during irradiations.…”

Section: Methodsmentioning

confidence: 99%

Proton irradiation-induced blistering in UO2

Pakarinen

Gan

et al. 2021

MRS Advances

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Proton (H+) irradiation effects in polycrystalline UO2 have been studied. The irradiation was carried out using three ion energies and two different ion fluxes at 600 °C. Scanning electron microscopy (SEM) investigations showed that significant surface flaking took place. Focused ion beam (FIB) milling in SEM was successfully applied for extracting lamellas from uneven blistered surfaces for transmission electron microscopy (TEM) investigations allowing detailed investigations for the degradation mechanisms. High-resolution TEM for the flaked UO2 surfaces revealed that the implanted H+ formed sharp two-dimensional cavities at the peak ion-stopping region instead of diffusing to the matrix. The resulting lateral stress likely caused UO2 surface deterioration in good agreement with previous blistering and flaking studies on crystalline materials. Graphical abstract

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Surface Modification of Polycrystalline Diamond Compacts by Carbon Ion Irradiation

Mutyala

Chen

Lin

et al. 2016

Procedia Manufacturing

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University of Wisconsin Ion Beam Laboratory: A facility for irradiated materials and ion beam analysis

Cited by 3 publications

References 16 publications

Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation

Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation

Proton irradiation-induced blistering in UO2

Surface Modification of Polycrystalline Diamond Compacts by Carbon Ion Irradiation

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