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Title: Non-gated laser-induced breakdown spectroscopy in bulk water by position-selective detection

Temporal and spatial evolutions of the laser-induced plasma in bulk water are investigated using fast imaging and emission spectroscopic techniques. By tightly focusing a single-pulse nanosecond Nd: YAG laser beam into the bulk water, we generate a strongly expanded plasma with high reproducibility. Such a strong expanding plasma enables us to obtain well-resolved spectral lines by means of position-selective detection; hence, the time-gated detector becomes abdicable. The present results suggest not only a possible non-gated approach for underwater laser-induced breakdown spectroscopy but also give an insight into the plasma generation and expansion in bulk water.
Authors:
; ; ; ;  [1]
  1. Optics and Optoelectronics Laboratory, Ocean University of China, Qingdao 266100 (China)
Publication Date:
OSTI Identifier:
22482069
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DETECTION; EMISSION; NEODYMIUM LASERS; PLASMA; PULSES; SPECTROSCOPY; UNDERWATER; WATER