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Mechanoluminescence of Ce/Tb inorganic salts in methane–acetylene mixtures with inert gases
Author(s) -
Tukhbatullin Adis A.,
Sharipov Glyus L.,
Galina Aygul A.
Publication year - 2018
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3533
Subject(s) - mechanoluminescence , krypton , acetylene , chemistry , inert gas , hydrocarbon , methane , argon , tetramethylurea , xenon , analytical chemistry (journal) , inert , inorganic chemistry , luminescence , materials science , organic chemistry , optoelectronics , solvent
The mechanoluminescence of cerium (Ce) and terbium (Tb) lanthanide salts is studied in hydrocarbon [methane (CH 4 ) and acetylene (C 2 H 2 )] and inert [helium (He), neon (Ne), argon (Ar), krypton (Kr), and xenon (Xe)] gaseous mixtures. The lines of *N 2 , *Ln 3+ , inert gases, *CH, and *C 2 radicals resulted from the mechanochemical decomposition of CH 4 and C 2 H 2 are observed in the emission spectrum. The luminescence intensity of the inert gases decreases with the hydrocarbon gas concentration in the mixture. The intensities of the *CH or *C 2 bands remains almost unchanged within 15–100 vol% of CH 4 or C 2 H 2 in the mixture. When the concentration of CH 4 or C 2 H 2 is lower than 15%, the intensities of the CH or C 2 bands increase achieving their maxima at 0.5–3% of the hydrocarbon. This is probably due to the optimal compositions of the mixtures with the most efficient generation of electrical discharges responsible for mechanoluminescence.