Shielded Multi-Mode Atomic Force Microscope
Autoprobe LS in a glove box
The Park Scientific Instrument Autoprobe LS Multimode Atomic Force Microscope has been installed in a state-of-the-art lead shielded glove box for examination of radioactive materials. Novel sample handling and preparation techniques are utilized to optimize equipment use. The unique features of the AFM allow samples surface morphology to be studied with minimum sample preparation and significantly reduce radioactive waste generation. The 3-dimensional images provide complimentary information about voids and particle size when used in conjunction with traditional SEM photomicrographs. Systematic control of the scan location on sample offers unique advantages to evaluate samples in sequential steps as well as study aging effect on a specific morphological feature. The system supports large sample sizes, which enables the study of sample inhomogeneities. In addition, the Autoprobe LS has an optical view with magnifications at 10X and 50X that provide the capability for selective area scanning and the glove box containment also supports the capability to control sample atmosphere.
AFM Image of LWR Spent Fuel Showing Detail Grain Structure of the HBS Region
The system has been used to study morphological changes in reactor fuel matrix due to radiation damage and bubble formation resulting from fission gases and actinide alpha decay. The system has also been used to investigate binding sites of small radionuclide particulates on surfaces and interfaces.
Benefits and Features
- Novel handling and sample preparation to reduce radioactive waste volume.
- Glove box installation for control of contamination, atmospheric control, and staff exposure.
- 3-D images of sample surface features at high spatial resolution.
- Built-in optical capability for selective area scan.
Point of Contact
Larry Greenwood,
Radiomaterials Chemistry Team
(509) 376-6918
Mailing Address
