科技报告详细信息
Laser-matter Interaction with Submerged Samples | |
Mariella, R ; Rubenchik, A ; Norton, M ; Donohue, G ; Roberts, K | |
关键词: ABLATION; CHEMICAL ANALYSIS; COMMINUTION; DESIGN; LASERS; SHOT PEENING; SUBSTRATES; WATER; WAVELENGTHS; | |
DOI : 10.2172/978421 RP-ID : LLNL-TR-427603 PID : OSTI ID: 978421 Others : TRN: US201010%%487 |
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美国|英语 | |
来源: SciTech Connect | |
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【 摘 要 】
With the long-term goal in mind of investigating if one could possibly design a 'universal solid-sample comminution technique' for debris and rubble, we have studied pulsed-laser ablation of solid samples that were contained within a surrounding fluid. Using pulses with fluences between 2 J and 0.3 J, wavelengths of 351 and 527 nm, and samples of rock, concrete, and red brick, each submerged in water, we have observed conditions in which {micro}m-scale particles can be preferentially generated in a controlled manner, during the laser ablation process. Others have studied laser peening of metals, where their attention has been to the substrate. Our study uses non-metallic substrates and analyzes the particles that are ablated from the process. The immediate impact of our investigation is that laser-comminution portion of a new systems concept for chemical analysis has been verified as feasible.【 预 览 】
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