Elin Malmqvist | Lund University (original) (raw)
Uploads
Papers by Elin Malmqvist
In this thesis, rotational spectra, acquired through laser-induced uorescence (LIF) on the OH-rad... more In this thesis, rotational spectra, acquired through laser-induced uorescence (LIF) on the OH-radical, were used to evaluate temperatures in dierent combustion environments. By comparing experimental spectra with theoretical ones of known temperature, the temperature can be determined. A MATLAB-code has been developed that evaluates temperature by comparing experimental spectra with a library of theoretical spectra, using a least-square algorithm. The theoretical spectra database was generated with the software LIFBASE. The code was used to evaluate temperature from OH-spectra acquired from already existing excitation scans recorded in an HCCI-engine, using photofragmentation LIF (PF-LIF). The LIF-signal was detected with ICCD-cameras. The measurements are thus spatially resolved in two dimensions. This spatial resolution was utilized to get spatially resolved, quantitative temperature measurements. Some reference excitation scans were performed during this project using both LIF and PF-LIF. These were acquired in premixed, laminar ames and in a free ow of H 2 O 2 -vapor at ambient conditons.
Laser & Photonics Reviews, 2016
IEEE Journal of Selected Topics in Quantum Electronics, 2016
EPJ Web of Conferences, 2016
Combustion and Flame, 2016
Imaging and Applied Optics 2014, 2014
ABSTRACT A technique that increases the temperature range and the sensitivity of OH-LIF thermomet... more ABSTRACT A technique that increases the temperature range and the sensitivity of OH-LIF thermometry is proposed. OH-excitation scans, acquired through photofragmentation laser-induced fluorescence of H2O2, are used to determine 2-D-temperatures in H2O2-vapor and in an HCCI-engine.
Imaging and Applied Optics 2016, 2016
In this thesis, rotational spectra, acquired through laser-induced uorescence (LIF) on the OH-rad... more In this thesis, rotational spectra, acquired through laser-induced uorescence (LIF) on the OH-radical, were used to evaluate temperatures in dierent combustion environments. By comparing experimental spectra with theoretical ones of known temperature, the temperature can be determined. A MATLAB-code has been developed that evaluates temperature by comparing experimental spectra with a library of theoretical spectra, using a least-square algorithm. The theoretical spectra database was generated with the software LIFBASE. The code was used to evaluate temperature from OH-spectra acquired from already existing excitation scans recorded in an HCCI-engine, using photofragmentation LIF (PF-LIF). The LIF-signal was detected with ICCD-cameras. The measurements are thus spatially resolved in two dimensions. This spatial resolution was utilized to get spatially resolved, quantitative temperature measurements. Some reference excitation scans were performed during this project using both LIF and PF-LIF. These were acquired in premixed, laminar ames and in a free ow of H 2 O 2 -vapor at ambient conditons.
Laser & Photonics Reviews, 2016
IEEE Journal of Selected Topics in Quantum Electronics, 2016
EPJ Web of Conferences, 2016
Combustion and Flame, 2016
Imaging and Applied Optics 2014, 2014
ABSTRACT A technique that increases the temperature range and the sensitivity of OH-LIF thermomet... more ABSTRACT A technique that increases the temperature range and the sensitivity of OH-LIF thermometry is proposed. OH-excitation scans, acquired through photofragmentation laser-induced fluorescence of H2O2, are used to determine 2-D-temperatures in H2O2-vapor and in an HCCI-engine.
Imaging and Applied Optics 2016, 2016