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Vibrational-resonance self-broadening of IR absorption bands in gaseous fluorides

机译:气态氟化物中红外吸收带的振动共振自增宽

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Abstract: A new spectroscopic effect of strong self-action was observed for the first time in molecular gases for vibrational transitions to combined states, in which the strongly IR active v$-3$/ mode is involved. Transformations of the v$-3$/, v$-1$/ $PLU v$-3$/, v$-2$/ $PLU v$-4$/ band shapes of $+32$/SF$-6$/, $+34$/SF$-6$/, $+12$/CF$-4$/, $+13$/CF$-4$/, $+14$/NF$-3$/ upon variation of density (T $EQ 293 K) were studied for pure gas (p $LS 70 Amagat) and its dilute mixtures with Ar, Kr, Xe (p$-mixt$/ $LS 150 Amagat). A strong linear dependence of the second spectral moment M$-2$/ on density for v$-3$/ and v$-1$/ $PLU v$-3$/ bands in pure gases was observed, whereas no effect was found in dilute mixtures and for v$-2$/ $PLU v$-4$/ band in pure gases.!7
机译:摘要:首次在分子气体中观察到了强自作用的新光谱效应,该振动由分子气体跃迁至结合态,其中涉及强红外活性v $ -3 $ /模式。 v $ -3 $ /,v $ -1 $ / $ PLU v $ -3 $ /,v $ -2 $ / $ PLU v $ -4 $ / $ + 32 $ / SF $- 6 $ /,$ + 34 $ / SF $ -6 $ /,$ + 12 $ / CF $ -4 $ /,$ + 13 $ / CF $ -4 $ /,$ + 14 $ / NF $ -3 $在密度变化时(T $ EQ 293 K),研究了纯气体(p $ LS 70 Amagat)及其与Ar,Kr,Xe的稀混合物(p $ -mixt $ / $ LS 150 Amagat)。对于纯气体中的v $ -3 $ /和v $ -1 $ / $ PLU v $ -3 $ /带,第二光谱矩M $ -2 $ /的密度具有很强的线性依赖性,但是没有影响在稀释的混合物中发现,在纯净气体中的v $ -2 $ / $ PLU v $ -4 $ /带。!7

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