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Does the energy transfer from Ar(1s) atoms to N 2 lead to dissociation?
Author(s) -
Klages ClausPeter,
Martinovs Andris,
Bröcker Lars,
Loffhagen Detlef
Publication year - 2020
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.202000070
Subject(s) - metastability , dissociation (chemistry) , atomic physics , argon , molecule , dielectric , bond dissociation energy , materials science , kinetic energy , energy transfer , range (aeronautics) , chemistry , analytical chemistry (journal) , physics , optoelectronics , organic chemistry , chromatography , composite material , quantum mechanics
Dielectric‐barrier discharges (DBDs) in Ar–N 2 mixtures, with N 2 fractions in 0.1–1% range, would be attractive alternatives to DBDs in pure N 2 if energy‐transfer reactions between Ar(1s) atoms and N 2 molecules were an efficient source of N atoms. Attempts to functionalize polyolefins in flowing postdischarges fed by such DBDs, as well as the search for the First Positive System in the emission spectrum, however, failed. Evidently, the energy‐transfer reactions do not produce N atoms. For Ar(1s 3 ) and Ar(1s 5 ) metastable states, this fact has already been reported in the literature. For Ar(1s 2 ) and Ar(1s 4 ) resonant states, a quantitative argument is derived in this paper: energy transfer from Ar(1s) atoms to N 2 molecules is not an efficient source of N atoms.