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Title: Quantitative imaging of carbon dimer precursor for nanomaterial synthesis in the carbon arc

Abstract

Delineating the dominant processes responsible for nanomaterial synthesis in a plasmaenvironment requires measurements of the precursor species contributing to the growth ofnanostructures. We performed comprehensive measurements of spatial and temporal profiles ofcarbon dimers in sub-atmospheric-pressure carbon arc by laser-induced fluorescence.Measured spatial profiles of carbon dimers coincide with the growth region of carbon nanotubes (Fang et al2016 Carbon 107 273-80) and vary depending on the arc operation mode, which is determinedby the discharge current and the ablation rate of the graphite anode. The carbon dimer density profileexhibits large spatial and time variations due to motion of the arc core. A comparison of theexperimental data with the 2D simulation results of self-consistent arc modeling shows a goodagreement. The model predicts well the main processes determining spatial profiles of carbondimers.

Creator(s)/Author(s):
; ; ; ; ;
Publication Date:
DOE Contract Number:  
AC02-09CH11466
Product Type:
Dataset
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
U. S. Department of Energy
Keywords:
arc nanomaterial synthesis; laser induced fluorescence; atmospheric plasma diagnostic; arc discharge
OSTI Identifier:
1562009
DOI:
10.11578/1562009

Citation Formats

Vekselman, V, Khrabry, A, Kaganovich, I, Stratton, B, Selinsky, R S, and Raitses, Y. Quantitative imaging of carbon dimer precursor for nanomaterial synthesis in the carbon arc. United States: N. p., 2018. Web. doi:10.11578/1562009.
Vekselman, V, Khrabry, A, Kaganovich, I, Stratton, B, Selinsky, R S, & Raitses, Y. Quantitative imaging of carbon dimer precursor for nanomaterial synthesis in the carbon arc. United States. doi:10.11578/1562009.
Vekselman, V, Khrabry, A, Kaganovich, I, Stratton, B, Selinsky, R S, and Raitses, Y. 2018. "Quantitative imaging of carbon dimer precursor for nanomaterial synthesis in the carbon arc". United States. doi:10.11578/1562009. https://www.osti.gov/servlets/purl/1562009. Pub date:Mon Jan 01 00:00:00 EST 2018
@article{osti_1562009,
title = {Quantitative imaging of carbon dimer precursor for nanomaterial synthesis in the carbon arc},
author = {Vekselman, V and Khrabry, A and Kaganovich, I and Stratton, B and Selinsky, R S and Raitses, Y},
abstractNote = {Delineating the dominant processes responsible for nanomaterial synthesis in a plasmaenvironment requires measurements of the precursor species contributing to the growth ofnanostructures. We performed comprehensive measurements of spatial and temporal profiles ofcarbon dimers in sub-atmospheric-pressure carbon arc by laser-induced fluorescence.Measured spatial profiles of carbon dimers coincide with the growth region of carbon nanotubes (Fang et al2016 Carbon 107 273-80) and vary depending on the arc operation mode, which is determinedby the discharge current and the ablation rate of the graphite anode. The carbon dimer density profileexhibits large spatial and time variations due to motion of the arc core. A comparison of theexperimental data with the 2D simulation results of self-consistent arc modeling shows a goodagreement. The model predicts well the main processes determining spatial profiles of carbondimers.},
doi = {10.11578/1562009},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {1}
}

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