کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5416180 | 1393803 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurements and analysis of collisional line-mixing within nuclear hyperfine components of helium broadened HI lines
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measurements and analysis of collisional line-mixing within nuclear hyperfine components of helium broadened HI lines Measurements and analysis of collisional line-mixing within nuclear hyperfine components of helium broadened HI lines](/preview/png/5416180.png)
چکیده انگلیسی
The absorption by the RÂ (0) and RÂ (1) lines of the fundamental band of HI broadened by He have been measured in the 0-500Â mbar pressure range using a tunable difference frequency generation laser spectrometer. The observed transmissions have been fitted and analyzed with a line-coupling model based on the infinite order sudden approximation. It is demonstrated that the three hyperfine components of the RÂ (0) manifold have identical widths and are not coupled by collisions. On the contrary, the profile of the RÂ (1) manifold cannot be modeled without accounting for both line-mixing and for the fact that the nine hyperfine components have different broadening parameters. This is, to our knowledge, the first demonstration of line coupling within hyperfine components.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 235, Issue 2, February 2006, Pages 149-157
Journal: Journal of Molecular Spectroscopy - Volume 235, Issue 2, February 2006, Pages 149-157
نویسندگان
P.-M. Flaud, J. Orphal, C. Boulet, J.-M. Hartmann,