skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spatial and temporal distribution of metal atoms and their diatomic oxide molecules in femtosecond laser-induced plasmas

Journal Article · · Journal of Analytical Atomic Spectrometry
DOI:https://doi.org/10.1039/C8JA00150B· OSTI ID:1460344
 [1];  [2];  [2];  [3];  [3]; ORCiD logo [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Mokpo National Univ., Jeonnam (Republic of Korea)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Applied Spectra, Inc., Fremont, CA (United States)

Here, we investigate the distribution of atoms and diatomic metal-oxide molecules in femtosecond laser-induced plasmas generated at and after the laser beam focal plane, where non-linear phenomena give rise to the formation of a weakly ionized air plasma channel. We use direct plasma imaging and optical emission spectroscopy to study plasma expansion, and the associated physical and chemical separation processes. Plasma splitting occurs upon the interaction of the weakly ionized plasma with the sample and is accompanied by a change in the spatio-temporal distribution of the molecules and atoms compared to sampling at the focus. Furthermore, molecular emission is favored at specific locations and is enhanced over atomic emission as the sample is moved underneath the laser focus. These findings support the ability to enhance or impede the formation of molecular versus atomic species at specific spatio-temporal locations in the laser-induced plasma.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1460344
Alternate ID(s):
OSTI ID: 1460477
Journal Information:
Journal of Analytical Atomic Spectrometry, Vol. none, Issue none; ISSN 0267-9477
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (30)

Early stage emission spectroscopy study of metallic titanium plasma induced in air by femtosecond- and nanosecond-laser pulses journal August 2005
Laser Ablation Molecular Isotopic Spectrometry journal February 2011
New challenges and insights in the detection and spectral identification of organic explosives by laser induced breakdown spectroscopy journal January 2011
Impacts of Ambient and Ablation Plasmas on Short- and Ultrashort-Pulse Laser Processing of Surfaces journal December 2014
Laser Ablation Molecular Isotopic Spectrometry for Molecules Formation Chemistry in Femtosecond-Laser Ablated Plasmas journal July 2017
Determination of electrooptical parameters of molecules with the use of nonempirical quantum-chemical calculations of absolute intensities of absorption bands in the IR region journal January 1999
Laser-induced breakdown spectroscopy (LIBS): an overview of recent progress and future potential for biomedical applications journal January 2012
Femtosecond laser induced breakdown spectroscopy of Cu at the micron/sub-micron scale journal November 2015
Generation of long-lived underdense channels using femtosecond filamentation in air journal April 2015
Optical emission spectroscopy and modeling of plasma produced by laser ablation of titanium oxides journal June 2001
Dynamic effects of a pre-ablation spark in the orthogonal dual-pulse laser induced breakdown spectroscopy journal May 2009
Investigation of local thermodynamic equilibrium in laser-induced plasmas: Measurements of rotational and excitation temperatures at long time scales journal November 2014
The physical mechanisms of short-pulse laser ablation journal February 2000
Time-resolved ultraviolet laser-induced breakdown spectroscopy for organic material analysis journal December 2007
Laser ablation molecular isotopic spectrometry (LAMIS): current state of the art journal January 2016
Elucidation of C2 and CN formation mechanisms in laser-induced plasmas through correlation analysis of carbon isotopic ratio journal October 2014
Laser-induced breakdown spectroscopy for detection of explosives residues: a review of recent advances, challenges, and future prospects journal May 2009
Vibrational emission analysis of the CN molecules in laser-induced breakdown spectroscopy of organic compounds journal November 2013
Experimental characterization of metallic titanium-laser induced plasma by time and space resolved optical emission spectroscopy journal January 2003
Insight into the Formation of Molecular Species in Laser-Induced Plasma of Isotopically Labeled Organic Samples journal September 2015
Exploring the formation routes of diatomic hydrogenated radicals using femtosecond laser-induced breakdown spectroscopy of deuterated molecular solids journal January 2015
Molecular Constants of the TiO Molecule journal August 1973
A Fundamental Understanding of the Dependence of the Laser-Induced Breakdown Spectroscopy (LIBS) Signal Strength on the Complex Focusing Dynamics of Femtosecond Laser Pulses on Either Side of the Focus journal September 2014
Experimental determination of the temperature range of AlO molecular emission in laser-induced aluminum plasma in air journal September 2014
Unexpected temporal evolution of atomic spectral lines of aluminum in a laser induced breakdown spectroscopy experiment journal November 2014
Laser Processing and Chemistry book January 2000
Comparison of optical emission from nanosecond and femtosecond laser produced plasma in atmosphere and vacuum conditions journal September 2013
Handbook of Laser‐Induced Breakdown Spectroscopy book March 2013
Laser Processing and Chemistry journal January 1999
Generation of long-lived underdense channels using femtosecond filamentation in air text January 2014

Cited By (4)

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques journal January 2019
Atomic spectrometry update: review of advances in atomic spectrometry and related techniques journal January 2018
Atomic spectrometry update: review of advances in atomic spectrometry and related techniques journal January 2017
Atomic spectrometry update: review of advances in atomic spectrometry and related techniques journal January 2013