کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5414735 1506748 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser-induced grating spectroscopy of highly excited overtone and combination vibrational states of methane
ترجمه فارسی عنوان
طیف سنجی گریدهای ناشی از لیزر از اوتتون بسیار هیجان زده و حالت های ارتعاشی ترکیبی متان
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
Laser-induced grating spectroscopy is applied to investigate weak overtone and combination absorption bands of methane. The rotationally-resolved spectra of transitions to the polyads Pn, n = 8-10, 12 recorded at pressures ranging from 0.2 to 4 bar and temperatures 298 K and 124-130 K cover a broad interval between 891 and 618 nm (11 220-16 180 cm−1) and contain a significant amount of prominent narrow lines which correspond to stationary rovibrational states. The absorption cross sections of the weakest detected methane transitions are estimated to be as small as ≈10−26 cm2 molecule−1. The technique is suitable to provide data for the development and verification of new models describing the complex energy structure of highly vibrationally excited molecules.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 291, September 2013, Pages 23-32
نویسندگان
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