Study of resonance Raman cross section of aqueous β -carotene at low concentrations
| العنوان: | Study of resonance Raman cross section of aqueous β -carotene at low concentrations |
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| المؤلفون: | Guo-Hui Lu, Shu-Qin Gao, Zuowei Li, Liu-Yang Zhang, Yan-Jie Tian, Jian Zuo |
| المصدر: | Applied Physics B. 87:727-730 |
| بيانات النشر: | Springer Science and Business Media LLC, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Aqueous solution, Materials science, Physics and Astronomy (miscellaneous), business.industry, General Engineering, Analytical chemistry, General Physics and Astronomy, Resonance, Solvent, Cross section (geometry), Dipole, symbols.namesake, Optics, symbols, Molecule, business, Raman spectroscopy, Raman scattering |
| الوصف: | Applying Teflon-AF waveguide cell, we determined the absolute resonance Raman cross sections (RCS) for C=C and C-C stretching modes of β-carotene in aqueous solution at low concentrations (10-6–10-10 M) by measuring Raman intensity. It was unexpected that the RCS increased rapidly with the decrease of concentration at extremely low concentration range (10-8–10-10 M), and it reached the value of 1.22×10-21 cm2 molecule-1Sr-1 at 2.5×10-10 M larger than general RCS (10-30 cm2 molecule-1Sr-1) for 109 times. Additionally, we give the tentative theory exploration for the experimental results that the large RCSs at low concentrations attributed to both resonance Raman effect and dipole-induced dipole interactions between solute and solvent molecules. |
| تدمد: | 1432-0649 0946-2171 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::b526ae92147224ca4fa194c627cc2248 https://doi.org/10.1007/s00340-007-2633-7 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........b526ae92147224ca4fa194c627cc2248 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 14320649 09462171 |
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