The Open University ’ s repository of research publications and other research outputs Novel measurements of refractive index , density and mid - infrared integrated band strengths for solid
نویسندگان
چکیده
We present novel measurements of the refractive index, density and integrated band strengths of mid-infrared features of solid N2O at 16 K and of NO2 and N2O4 in two frozen NO2 : N2O4 mixtures deposited at 16 and 60 K. The refractive index and density measurements were performed also for frozen O2 deposited at 16 K. In this case, the integrated band strength values could not be determined since O2 is a homonuclear molecule and therefore its fundamental mode is not infrared active. The solid samples were analysed by infrared spectroscopy in the 8000÷800 cm range. The sample thickness was measured by the interference curve obtained using a He-Ne laser operating at 543 nm. The refractive index at this laser wavelength was obtained, by numerical methods, from the measured amplitude of the interference curve. The density values were obtained using the LorentzLorenz relation. Integrated band strength values were then obtained by a linear fit of the integrated band intensities plotted versus column density values. The astrophysical relevance of these novel measurements is briefly discussed.
منابع مشابه
Novel measurements of refractive index , density and mid - infrared integrated band strengths for solid O 2 , N 2 O and NO
We present novel measurements of the refractive index, density and integrated band strengths of mid-infrared features of solid N2O at 16 K and of NO2 and N2O4 in two frozen NO2 : N2O4 mixtures deposited at 16 and 60 K. The refractive index and density measurements were performed also for frozen O2 deposited at 16 K. In this case, the integrated band strength values could not be determined since...
متن کاملNovel measurements of refractive index , density and mid - infrared integrated band strengths for solid
We present novel measurements of the refractive index, density and integrated band strengths of mid-infrared features of solid N2O at 16 K and of NO2 and N2O4 in two frozen NO2 : N2O4 mixtures deposited at 16 and 60 K. The refractive index and density measurements were performed also for frozen O2 deposited at 16 K. In this case, the integrated band strength values could not be determined since...
متن کاملNovel measurements of refractive index, density and mid-infrared integrated band strengths for solid O(2), N(2)O and NO(2):N(2)O(4) mixtures.
We present novel measurements of the refractive index, density and integrated band strengths of mid-infrared features of solid N(2)O at 16K and of NO(2) and N(2)O(4) in two frozen NO(2):N(2)O(4) mixtures deposited at 16 and 60K. The refractive index and density measurements were performed also for frozen O(2) deposited at 16K. In this case, the integrated band strength values could not be deter...
متن کامل