Specimen Requirements
Depending on the application sample size, may be customized to obtain the best resolution. However, these specifications will vary depending on tool configuration.
Scanning Mode Options
| Normal | One 3D scan volume (1 data set) |
| Wide Field |
Left & Right 3D Scan volumes (2 data sets) combined (stitched horizontally) Wide Field mode sample width maximum (50-90 mm) |
| Vertical Stitch | More than one 3D scan volumes imaged along the user-defined length of the sample (2 or more data sets). Several combined vertical tomography volumes (vertically stitched) |
| Wide Field Stitch | Left & Right 3D scan volumes for each vertical segment imaged along the user-defined length of the sample. Two data sets for each vertical segment (at least 4 or more data sets). |
The number of scans needed depends on the number of samples (of the same material and dimensions) you need to scan and the scanning mode you require.
Estimate Scan Time
Note: This is only a rough estimate/recommendation of what your projected scan times may be. Scan time and scan parameters are dependent on the properties of your sample (density, thickness, inclusions, dimensions, etc.). This means that the resulting scan time could be greater (or less) than the times projected here. Especially if you select an exposure greater or less than the recommended exposure time.
Exposure time Recommendations based on past tomography recipes (Coming Soon)!
Scan Parameter Recommendations for good quality data |
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|---|---|
| The following is a list of Upcoming Training and Events hosted by the 3D XRM Facility. | |
| Projections | Scanning at 0.4X, use a number of projections 1601 or greater |
| Scanning at 4X, use a number of projections > 1601 (2401 at minimum) | |
| Scanning at 20X, use at minimum 2801 projections | |
| More projections at higher resolution help minimize noise & artifacts | |
| Projections need to be a multiple of 20 + 1 | |
| Reference Collection | Multi-reference collection is recommended (generally adds 5-10 mins/scan) |
| Default is set to collect a reference every 10 projections | |
| References help improve data quality | |
| Intensities | Intensity scales linearly with exposure time |
| Intensities greater than 5000 are recommended (improves SNR) | |
| Intensities MUST be less than 55000 (use histogram in S&S to check values) | |
See Scanning FAQS for more information