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Register a new userThe influence of elevated temperature on Collision induced absorption in gaseous oxygen (O2-O2) and mixtures of oxygen and nitrogen gases (O2-N2) in the wavelength range of 1.06 μm
تأثير درجات الحرارة المرتفعة على الامتصاص المحرض بالتصادم للأوكسجين الغازي (O2-O2) و مزائج من غازي الأوكسجين و الآزوت (N2-O2) في منطقة الطول الموجي µm 06.1 ة
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Damascus University ورقة بحثية
Publication date
2012
fields
Physics
and research's language is
العربية
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Shamra Editor
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جرى قياس الامتصاص المحرض بالتصادم للأوكسجين الصافي و مـزيج مـن غـازي الأوكـسجين و الآزوت و دراسته مخبرياً، في منطقة الطول الموجي µm 06.1 ،باستخدام مقيـاس الطيـف الـضوئي 5000 Cary مع خلية امتصاص غازية بطول مسار m 6.9 .بلغت نسب مزج الأوكسجين فـي المـزيج %20 و%50 و%80 ،و ذلك عند ضغوط من 1 حتى bar 25 ، و بدرجات حرارة 298 ،323 ،348 و 373 K .وجد أن شريط الامتصاص غير متناظر و يظهر على هيئة امتصاص عريض و مـستمر تقـع قمتـه العظمى عند µm 06.1 ،و لا يبـدي أيـة بنيـة دورانيـة.
Collisions induced absorption spectra of pure oxygen and gaseous mixtures of oxygen and nitrogen were measured at laboratory and studied, in the region of 1.06 μm, using Cary 5000 spectrophotometer, and White absorption gas cell with a path length fixed at 9.6 m. The mixing ratio of oxygen in nitrogen were 20%, 50% and 80%, at temperature 298, 323, 348, 373 K and pressures between 1 and 25 bar. The absorption band was centered at 1.06 μm, and raised as a wide continuum absorption, and did not show any rotational structure.
References used
Smith, K. M., Newnham, D. A., 1999. Near-infrared absorption spectroscopy of oxygen and nitrogen gas mixtures. Chemical Physics Letters, Vol. 308, No. 1,pp. 1–6
Paul, D. C., Robert, E. J., Terence, I. Q., 2003. A review of possible optical absorption features of oxygen molecules in the icy surfaces of outer solar system bodies. Planetary and Space Science, Vol. 51, pp. 183–190
Chagas, J. C. S., Newnham, D. A., Smith, K. M., Shine, K. P., 2002. Impact of new measurements of oxygen collision–induced absorption on estimates of short-wave atmospheric absorption. Quarterly Journal of the Royal Meteorological Society, Vol. 128, No. 585, pp. 2380–2383
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