Helium broadened propane absorption cross sections in the far-IR

Q2 Physics and Astronomy

Molecular Astrophysics Pub Date : 2017-09-01 DOI:10.1016/j.molap.2017.06.003

A. Wong , B. Billinghurst , P.F. Bernath

引用次数: 6

Abstract

Infrared absorption spectra for pure and He broadened propane have been recorded in the far-IR region (650-1300 cm⁻¹) at the Canadian Light Source (CLS) facility using either the synchrotron or internal glowbar source depending on the required resolution. The measurements were made for 4 temperatures in the range 202–292 K and for 3 pressures of He broadening gas up to 100 Torr. Infrared absorption cross sections are derived from the spectra and the integrated cross sections are within 10 % of the corresponding values from the Pacific Northwest National Laboratory (PNNL) for all temperatures and pressures.

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远红外线中氦使丙烷吸收截面变宽

在加拿大光源(CLS)设施上，根据所需的分辨率，使用同步加速器或内部发光棒源，在远红外区域(650-1300 cm−1)记录了纯丙烷和He加宽丙烷的红外吸收光谱。测量了202 - 292k范围内的4种温度和高达100 Torr的He展宽气体的3种压力。红外吸收截面由光谱得出，在所有温度和压力下，综合截面与太平洋西北国家实验室(PNNL)相应值的误差在10%以内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Molecular Astrophysics ASTRONOMY & ASTROPHYSICS-

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期刊介绍： Molecular Astrophysics is a peer-reviewed journal containing full research articles, selected review articles, and thematic issues. Molecular Astrophysics is a new journal where researchers working in planetary and exoplanetary science, astrochemistry, astrobiology, spectroscopy, physical chemistry and chemical physics can meet and exchange their ideas. Understanding the origin and evolution of interstellar and circumstellar molecules is key to understanding the Universe around us and our place in it and has become a fundamental goal of modern astrophysics. Molecular Astrophysics aims to provide a platform for scientists studying the chemical processes that form and dissociate molecules, and control chemical abundances in the universe, particularly in Solar System objects including planets, moons, and comets, in the atmospheres of exoplanets, as well as in regions of star and planet formation in the interstellar medium of galaxies. Observational studies of the molecular universe are driven by a range of new space missions and large-scale scale observatories opening up. With the Spitzer Space Telescope, the Herschel Space Observatory, the Atacama Large Millimeter/submillimeter Array (ALMA), NASA''s Kepler mission, the Rosetta mission, and more major future facilities such as NASA''s James Webb Space Telescope and various missions to Mars, the journal taps into the expected new insights and the need to bring the various communities together on one platform. The journal aims to cover observational, laboratory as well as computational results in the galactic, extragalactic and intergalactic areas of our universe.