|
|
|
|
|
|
|
|
|
Cathode ray (ut, rt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
A stream of electrons emitted by a heated filament and projected in a more or less confined beam under the influence of a magnetic and/or electric field.
|
|
|
Alpha “ray” (rt), английский
A stream of fast moving helium nuclei. this is a strongly ionizing radiation with very weak penetration.
Step-wedge calibration film (rt), английский
A step-wedge comparison film, the densities of which are traceable to a nationally recognized standardizing body. it is used for reference when determining the density or densities of a radiograph.
|
|
|
|
|
|
|
