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1	The lag between micro- and macro-mixing in compressed fluid flows Bassing, Daniel, Bräuer, Andreas S. 27 July 2020 (has links) We report the application of a novel optical Raman-based measurement technique for the simultaneous determination of the progress of mixing on the micro- and on the macro-scale. The introduced measurement technique is applicable to mixing systems containing one compound, which potentially can form hydrogen bonds, such as water, alcohols or amines, and does not rely on the addition of traces of indicator compounds. Here we demonstrate its applicability by analyzing the lag of micro-mixing behind macro-mixing when liquid ethanol is injected into a supercritical bulk environment mainly composed of carbon dioxide (CO2). While the degree of mixing on the macro-scale is determined from the ratio of the intensities of characteristic Raman signals of ethanol and CO2, the degree of mixing on the micro-scale is determined from the shape of the OH stretching vibration Raman signal of ethanol, which is a function of the development of hydrogen bonds. info:eu-repo/classification/ddc/660 ddc:660 Raman-Spektroskopie
2	Femtosekunden Photolyse von Diiodmethan in überkritischen Fluiden: Konkurrenz zwischen Photodissoziation und Photoisomerisierung / Femtosecond Photolysis of Diiodomethane in Supercritical Fluids: Competition between Photodissociation and Photoisomerisation Grimm, Christian 05 November 2003 (has links) No description available. Mathematics and Computer Science Käfigeffekt Femtochemie unimolekulare Reaktionen Photodissoziation Photoisomerisierung Diiodmethan Laserspektroskopie Pump-Probe-Spektroskopie überkritische Fluide Schwingungsenergietransfer Orientierungsrelaxation 540 Chemie cage effect femtochemistry unimolecular reactions photodissoziation photoisomerization diiodomethane laser spectroscopy pump probe spectroscopy supercritical fluids vibrational energy transfer orientational relaxation 35.16 35.13 35.25 SI 000: Photochemie Strahlungschemie SIL 000: Laser-Chemie {Strahlungschemie}
3	Photolytischer Käfigeffekt von Dihalomethanen in überkritischen Lösungsmitteln / Photolytic cage effect of dihalomethanes in supercritical solvents Zerbs, Jochen 02 November 2005 (has links) No description available. 540 Chemie Mathematics and Computer Science photolytischer Käfigeffekt Diiodmethan Bromiodmethan Pump Probe Spektroskopie überkritische Fluide Schwingungsenergierelaxation Orientierungsrelaxation molekulardynamische Simulationen radiale Verteilungsfunktionen lokale Dichtevergrößerung photolytic cage effect diiodomethane bromoiodomethane pump probe spectroscopy supercritical fluids vibrational energy relaxation orientational relaxation molecular dynamics simulations radial distribution functions local density enhancement 35.13 35.16 35.22 SD 000: Physikalische Chemie SBC 000: Chemie bei hohen Drucken SIL 000: Laser-Chemie {Strahlungschemie} SIC 000: Radiolyse {Photochemie}
4	Photodissoziation von Polyhalogenmethanen in Fluiden: Kurzzeitdynamik und Mechanismen / Photodissociation of polyhalomethanes in fluids: Ultrafast dynamics and mechanisms Wagener, Philipp 29 April 2008 (has links) No description available. 540 Chemie Mathematics and Computer Science photolytischer Käfigeffekt Polyhalogenmethane Ultrakurzzeitdynamik Photodissoziation Photoisomerisierung Pump Probe Spektroskopie überkritische Fluide Schwingungsenergierelaxation charge-transfer-Komplex lokale Dichtevergrößerung Photoionisation Solvatation freies Elektron Diffusion geminale Rekombination CTTS-Komplex photolytic cage effect polyhalomethanes ultrafast dynamics photodissociation photoisomerization pump probe spectroscopy supercritical fluids vibrational energy transfer charge-transfer complex local density enhancement photoionisation solvationdynamics of free electron diffusion geminate recombination CTTS-complex 35.13 35.16 35.22 SD 000: Physikalische Chemie SBC 000: Chemie bei hohen Drucken SIL 000: Laser-Chemie {Strahlungschemie}

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