Patent ID: 8822878

Claim:
A system for production of nanometric or sub-micrometric powders in continuous flux under the action of laser pyrolysis, the system comprising: a laser emitting a laser beam along a first axis; means for focusing the laser beam at a focal point; a first injector downstream from the laser and from the means for focusing and configured to emit a first flux of reagents along a second axis perpendicular to the first axis in a first interaction zone; a second injector positioned downstream of the first injector, the second injector configured to emit a second flux of reagents along a third axis perpendicular to the first axis in a second interaction zone; means for distributing energy of the laser beam into an elongated cross-section, the elongated cross-section having at least one adjustable width or height dimension that can be changed independently, wherein the laser beam interacts with the first flux of reagents in the first interaction zone and interacts with the second flux of reagents in the second interaction zone to produce powders, wherein the power density of the laser beam is identical prior to reaching each interaction zone at the level of each injector of a plurality of injectors and is equal to a preferred power density, and wherein the first injector is placed in front of the focal point and the second injector is placed after the first injector, such that the concentration of the laser beam along the first axis compensates for losses from absorption in the first interaction zone and recovers the preferred power density at the second interaction zone.