Cavity ring down and thermal lens techniques applied to vibrational spectroscopy of gases and liquids.

Nyaupane, Parashu Ram, 1980-

Cavity ring down and thermal lens techniques applied to vibrational spectroscopy of gases and liquids.

dc.contributor.advisor	Manzanares, Carlos E.
dc.creator	Nyaupane, Parashu Ram, 1980-
dc.date.accessioned	2019-02-01T14:21:04Z
dc.date.available	2019-02-01T14:21:04Z
dc.date.created	2017-08
dc.date.issued	2017-06-15
dc.date.submitted	August 2017
dc.date.updated	2019-02-01T14:21:05Z
dc.description.abstract	Infrared (IR) and near-infrared (NIR) region gas temperature sensors have been used in the past because of its non-intrusive character and fast time response. In this dissertation cavity ring down (CRD) absorption of oxygen around the region 760 nm has been used to measure the temperature of flowing air in an open optical cavity. This sensor could be a convenient method for measuring the temperature at the input (cold air) and output (hot air) after cooling the blades of a gas turbine. The results could contribute to improvements in turbine blade cooling designs. Additionally, it could be helpful for high temperature measurement in harsh conditions like flames, boilers, and industrial pyrolysis ovens as well as remote sensing. We are interested in experiments that simulate the liquid methane and ethane lakes on Titan which is around the temperature of 94 K. Our specific goal is to quantify the solubility of unsaturated hydrocarbons in liquid ethane and methane. However, it is rather complicated to do so because of the low temperatures, low solubility and solvent effects. So, it is wise to do the experiments at higher temperature and test the suitability of the techniques. In these projects, we were trying to explore if our existing laboratory techniques were sensitive enough to obtain the solubility of unsaturated hydrocarbons in liquid ethane. First, we studied the thermal lens spectroscopy (TLS) of the (Deltav = 6) C-H overtone of benzene and naphthalene in hexane and CCl4 at room temperature.
dc.format.mimetype	application/pdf
dc.identifier.uri	https://hdl.handle.net/2104/10519
dc.language.iso	en
dc.rights.accessrights	Worldwide access.
dc.subject	Spectroscopy. Ring down. Optical temperature sensor. Thermal lens.
dc.title	Cavity ring down and thermal lens techniques applied to vibrational spectroscopy of gases and liquids.
dc.type	Thesis
dc.type.material	text
thesis.degree.department	Baylor University. Dept. of Chemistry & Biochemistry.
thesis.degree.grantor	Baylor University
thesis.degree.level	Doctoral
thesis.degree.name	Ph.D.