کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10226636 | 1701282 | 2019 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature and pressure dependence of the line shape at λâ¯=â¯763â¯nm in oxygen concentration detection
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Gas line shape is determined by the Voigt profile, which is the convolution of Lorentz and Doppler profiles. The calculation amount in the Voigt profile is much larger than that in the two other profiles, and an approximate Lorentz or Doppler profile is generally used in gas concentration detection via tunable laser absorption spectroscopy. The normalized peak ratio and error function are introduced to compare the approximating effect of the two profiles. The normalized peak ratio value is simulated for Doppler profile and Lorentz profiles over a variable temperature and pressure, respectively. The 10%, 5% and 2.5% error functions for pressure versus temperature are obtained for the two profiles. Oxygen at a wavelength of 760â¯nm is used to demonstrate the simulation results. The presented method of investigating line shapes can be applied to other gas spectrum lines.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 176, January 2019, Pages 236-240
Journal: Optik - Volume 176, January 2019, Pages 236-240
نویسندگان
Wenke Liang, Xiaozhou Dong, Yunfeng Bi, Tieliang Lv,