Characteristic temperatures in a FAPES source

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Journal titleSpectrochimica Acta. Part B, Atomic Spectroscopy
Pages10211031; # of pages: 11
AbstractA number of state distribution temperatures were measured in an effort to characterize a 100 W 13.56 MHz rf He plasma established in a FAPES (Furnace Atomization Plasma Emission Spectrometry) source. Excitation temperatures derived from a Boltzmann plot of He I and Fe I lines were in reasonable agreement, i.e. 3300 ± 180 and 2920 ± 180 K, respectively. An excitation temperature measured with Fe II lines was substantially larger than the above values, being 7610 ± 450 K. A kinetic or Doppler temperature based on measurement of the width of the Be I 234.861 nm line profile was 7030 ± 1150 K whereas the He ionization temperature derived from the measured electron number density was 10920 ± 1900 K. It is clear that complete LTE does not exist in this source.
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AffiliationNational Research Council Canada
Peer reviewedNo
NRC number1232
NPARC number8897507
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Record identifier10a7ac4a-2611-4def-bf2b-d3dc5fb47a2c
Record created2009-04-22
Record modified2016-05-09
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