- Increase the distance between the sample and the X-ray tube focal point by raising the board further away from the X-ray tube during inspection.
- Minimize the inspection time by automating the procedure as much as possible so that only those areas that need examination are investigated or inspect critical devices at a lower magnification.
- Consider the necessity of subsequent or repeated inspections such as after rework and repair.
- Make corroborative dose measurements using thermal luminescent detector (TLD) material to validate the understanding of a particular X-ray system confirming the doses that are likely given.
- Place filter material between the sample and the X-ray source. Zinc foil of 100 micron thickness will reduce the dose by a factor of 100 times without greatly compromising the image quality.
