euro-optics-plasma-science-2018-posters

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Laser Optics & Photonics and Atomic & Plasma Science 2018
J u l y 1 6 - 1 7 , 2 0 1 8
P r a g u e , C z e c h R e p u b l i c
Page 71
American Journal of Computer Science and Information Technology
ISSN: 2349-3917
E u r o S c i C o n J o i n t E v e n t o n
Laser Optics & Photonics and
Atomic & Plasma Science
Time-resolved infrared emission spectra were obtained at Hampton from
YAG-laser induced graphite plasmas in various gaseous environments at
atmospheric pressure in thewavelength range of 1-10µmusing a single element
LN2 cooled InSb or HgCdTe detector and a scanning grating spectrometer.
Spectra were averaged by a boxcar detector applying 10µs delays relative
to the laser pulse and a 16µs gate width. These spectra were compared to
laser-induced breakdown (LIB) carbon spectra in the UV-visible range obtained
simultaneously as well as published earlier at the Central Research Institute
for Chemistry, Budapest. The differences illustrate the specifics of infrared
emission that are general for infrared LIBS (IR-LIBS) spectra. IR-LIBS spectra
obtained for carbon are too complex and are of too low resolution to yield
definite molecular assignments, but comparisons to low temperature solid
phase IR absorption spectra, high temperature gas-phase IR emission spectra
and a theoretical IR spectral database suggest assignments to certain class of
carbon molecules. These results may be of interest for carbon nanostructure
research. Some aspects of vibrational excitation in IRLIB spectra using plasma
from a small PAH molecule will also be discussed.
Spectral studies of combined UV-VIS and infrared emission
from laser-induced carbon and other plasmas
Clayton S C Yang 1, Sudhir Trivedi 1, Jin Feng1, Laszlo Nemes2
and Uwe Hommerich3
1Brimrose Corporation of America, Maryland
2Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry,
Hungarian Academy of Sciences, Hungary
3Hampton University, Virginia
Clayton S C Yang et al., J Food Nutr Popul Health 2018, Volume: 2
DOI: 10.21767/2577-0586-C1-003
Biography
Laszlo Nemes obtained a diploma in chemical engineering
in 1959. I started doing research at the Pharmaceutical
Research Institute, Budapest, then I joined the research network
of the Hungarian Academy of Sciences and I have been
associated ever since with that organization I am emeritus
science adviser; possess a Ph.D. degree from the Technical
University of Budapest a . Degree from the Hungarian
Academy of Sciences and Dr.Hab. as habilitated professor at
the Technical University of Budapest. I was appointed Visiting
Research Scientist at the Chemistry Department, University
of Michigan, Ann Arbor, USA. of Pure and Applied Science
at the St. Francis Xavier University in Nova Scotia, Canada.
Since 1980 I was active in the field of laser induced chemistry
and the emission spectroscopic studies of laser generated
plasmas (mainly carbon plasmas). This activity brought me
into close cooperation with the Space Institute of the University
of Tennessee With colleagues there we have published a
number of common papers in this field, mostly on diatomic
molecules. Another of my special field has been the theory and
spectroscopy of carbon clusters, especially fullerenes. In 2006
I retired but remained active at my former Institute, the Central
Research Institute of Chemistry as science advisor emeritus.
In the last 3 years I am associated with the Research Centre
of Natural Sciences of the Hungarian Academy of Sciences,
Budapest, as emeritus science advisor. A selected compilation
of my scientific papers are available at Research Gate.