| 摘要 |
To generate radiation or particles by interaction between a laser beam and a target, the selected target is a free flow ( 5 ) in a vacuum enclosure ( 40 ) of a powder made up of solid grains of size from 10 mum to 1 mm and the laser beam ( 9 ), which is an intense pulsed laser beam, is focused onto the powder flow ( 5 ) that is driven by gravity only, to create an interaction area ( 8 ) generating the radiation or the particles in the vacuum enclosure ( 40 ), in which the internal pressure is less than 1000 Pa.
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