| 主权项 |
1. An impaction densitometer, comprising:
a chamber configured to receive a particle; a beam generator configured to emit a beam crossing a particle direction of travel within the chamber; a detector configured to receive the beam and convert a change in intensity of the received beam, resulting from the particle passing through the beam, into an electrical signal corresponding to a particle volume; an impact sensor positioned a known distance from the beam and configured to measure a particle momentum as a function of an impact energy transferred from the particle to the impact sensor; a velocity calculator configured to calculate a particle velocity based on a time it takes the particle to pass through the beam and strike the impact sensor; a mass calculator configured to calculate a particle mass as a function of the particle momentum and velocity; and a density calculator configured to calculate a particle density as a function of the particle mass and volume. |
