| 摘要 |
There is disclosed a variety of apparatuses for controlling by radiation pressure the motion of a particle free to move with respect to its environment, based on the discovery that one or more beams of optical radiation can have frequency, diverging shape or intensity selected for a controlled radiation-pressure interaction with the particle that overpowers gravity and collision effects of atoms and molecules and overpowers any photophoresis interaction of the particle and its environment due to a heating effect of said particle upon its environment. The disclosed results of the effect of the radiation pressure on the motion of the particle include controllably heating the particle to provide a black-body point light source, bombardment of a sample target with such particles, very high energy particle acceleration, strong-focusing acceleration of a neutral particle, isotope separation, gas pumping, separation of particles by size, population inversion based on radiation-pressure separation of excited species, vacuum deposition of thin films from ultrapure particles controllably vaporized while held by radiation pressure, tensile-strength testing of materials based on the radiation-pressure effect of circularly polarized light, contaminant-free trapping or bottling of neutral gases, molecular beam separation and deflection, acceleration measurement for inertial guidance and measurement of very low gas pressures. |
