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Relevant bibliographies by topics / Ultrafast spectrometry / Dissertations / Theses

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Dissertations / Theses on the topic 'Ultrafast spectrometry'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Morrison, Vance. "Generation of tunable femtosecond laser pulses and the construction of an ultrafast pump-probe spectrometer." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116114.

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An ultrafast UV-visible spectrometer was designed and implemented. An optical parametric amplifier was constructed to be used as a pump source for the spectrometer. Using nonlinear optical processes and an 800 nm ultrashort pulses, tunable infrared(IR) light was produced with a wavelength range of &sim;.1 mum to 3 mum. The IR light was then mixed with 800 nm light to produce tunable visible light with a wavelength range of 466 nm to 600 nm. Supercontinuum (SC) was used as the probe pulse of the spectrometer, providing a large observation bandwidth. Commercially purchased fast spectrometers wer

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2

Huchon, Christophe Xavier. "Time of flight spectrometry studies of graphite surface : ultrafast laser ablation and photoelectron spectroscopy." Thesis, University of Birmingham, 2008. http://etheses.bham.ac.uk/372/.

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This work reports an investigation of the interaction of ultrashort laser pulses with a graphite surface. Time-of-flight experiments were conducted with a 100 fs laser system, then 13 fs laser pulses at 800 nm wavelength were used for photoelectron spectroscopy studies. Multi-shots and single-shot laser pulse regimes have shown the existence of two mechanisms involved in the ablation of graphite: at low laser fluence, a non-thermal physical process known as Coulomb explosion (CE) is responsible for the ultrafast removal of particles. At high laser fluence, a thermal process, called plasma gene

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3

Brady, John Joseph. "VAPORIZATION OF BIOLOGICAL MACROMOLECULES USING INTENSE, ULTRAFAST LASERS: MECHANISM AND APPLICATION TO PROTEIN CONFORMATION." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/211496.

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Chemistry<br>Ph.D.<br>This dissertation details the design and implementation of a state-of-the-art ambient trace analysis technique known as laser electrospray mass spectrometry. This novel technique utilizes an intense, nonresonant femtosecond laser pulse to transfer nonvolatile, fragile molecules into the gas phase from various substrates. The vaporized analyte is subsequently captured, solvated and ionized in an electrospray plume enabling mass analysis. Laser electrospray mass spectrometry is capable of analyzing samples in the liquid or solid states, mass spectral imaging of adsorbed mol

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4

Pieterse, Cornelius Louwrens [Verfasser], and R. J. Dwayne [Akademischer Betreuer] Miller. "Mass Spectrometry Performed Under Ultrafast Stress-Confinement Conditions / Cornelius Louwrens Pieterse ; Betreuer: R. J. Dwayne Miller." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1166315371/34.

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5

Chiasson, Martin. "An Imaging Mass Spectrometer with Ultrashort Laser Pulses as its Ionization Source." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34343.

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We have built an imaging mass spectrometer adapted for ultrashort laser pulses as its ionization technique, as an alternative to other imaging techniques. Before my arrival, the mass spectrometer has only been subject to preliminary tests on noble gases. Since then, we’ve made some modifications to the system in order to properly analyze solids. This thesis shows how we obtain our ultrashort laser pulses, the inner workings of our homemade imaging mass spectrometer, and the results that we’ve obtained with it so far. We tested two modes of operation concerning the extraction of the ions from t

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6

Studzinski, Harald [Verfasser]. "Ultrafast radiationless dynamics of selected electronically excited aromatic molecules by femtosecond time-resolved mass spectrometry and photoelectron imaging / Harald Studzinski." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019553545/34.

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7

Cai, Yi. "Coupling Ambient Ionization Mass Spectrometry with Liquid Chromatography and Electrochemistry and Their Applications." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1472816263.

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8

Perez, Johnny Joe. "ELUCIDATING THE FUNDAMENTALS OF LASER ELECTROSPRAY MASS SPECTROMETRY AND CHARACTERIZATION OF COMPOSITE EXPLOSIVES AND CLASSIFICATION OF SMOKELESS POWDER AND ITS RESIDUE USING MULTIVARIATE STATISTICAL ANALYSIS." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/416547.

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Chemistry<br>Ph.D.<br>This dissertation expounds growing insight of the electrospray droplet ionization mechanism following ablation of dried hydrophobic and hydrophilic molecules using femtosecond laser pulses and mass analysis of the gas phase ions. Both hydrophobic and hydrophilic molecules were laser vaporized into an electrospray solvent opposite in polarity revealing appreciable ion intensity for all samples in contrast to ESI-MS and DESI measurements were solubility of the analyte in the spray solvent is a prerequisite. Quantitative analysis of equimolar protein solutions was establishe

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9

Soldatova, Alexandra V. "PHOTOPHYSICAL PROPERTIES OF METALLONAPHTHALOCYANINES: EXPERIMENTAL AND THEORETICAL INVESTIGATIONS." Connect to this title online, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1162584614.

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10

Timilsina, Pratap. "Development of an electron time of flight spectrometer for ultrafast pulse characterization and ultrafast dynamics studies." Kansas State University, 2016. http://hdl.handle.net/2097/32598.

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Master of Science<br>Department of Physics<br>Carlos Trallero<br>This report presents the details of an electron time-of-flight (ETOF) spectrometer to be used for characterizing ultrafast electric field pulses. The pulses will range in pulse-duration from femtosecond to attoseconds and in wavelength from the far infrared (FIR) to the extreme ultra violet (XUV). By measuring the photoelectrons in the presence of two electric fields and their quantum interference we will be able to extract the amplitude and phase of the electric field. For XUV pulses this is the well-known streaking and

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11

Ottosson, Niklas. "Aqueous Solutions as seen through an Electron Spectrometer : Surface Structure, Hydration Motifs and Ultrafast Charge Delocalization Dynamics." Doctoral thesis, Uppsala universitet, Yt- och gränsskiktsvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-151435.

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In spite of their high abundance and importance, aqueous systems are enigmatic on the microscopic scale. In order to obtain information about their geometrical and electronic structure, simple aqueous solutions have been studied experimentally by photo- and Auger electron spectroscopy using the novel liquid micro-jet technique in conjunction with synchrotron radiation. The thesis is thematically divided into three parts. In the first part we utilize the surface sensitivity of photoelectron spectroscopy to probe the distributions of solutes near the water surface. In agreement with recent theor

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12

Shamaev, Alexei E. "Synthesis, Photochemical Properties and DNA Binding Studies of DNA Cleaving Agents Based on Chiral Dipyridine Dihydrodioxins Salts." Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1445859853.

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13

Roberts, Gareth Michael. "Development and construction of a new photoelectron imaging spectrometer for studying the spectroscopy and ultrafast dynamics of molecular anions." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/631/.

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We present a detailed account of the development, construction, and commissioning of a new experiment for studying the spectroscopy and ultrafast dynamics of molecular anions in the gas phase. The new instrument incorporates: an electrospray ionisation source, which is capable of generating a vast class of molecular anions; a Wiley-McLaren time-of-flight mass spectrometer; and a compact photoelectron imaging arrangement for anions, which negates the use of pulsed high voltages. We use this instrument in conjunction with a femtosecond laser system to perform the first ultrafast time-resolved ph

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14

Bradler, Maximilian [Verfasser], and Eberhard [Akademischer Betreuer] Riedle. "Bulk continuum generation: the ultimate tool for laser applications and spectroscopy : from new insights to ultrafast amplifiers and spectrometers / Maximilian Bradler. Betreuer: Eberhard Riedle." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1060006472/34.

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15

Terschlüsen, Joachim A. "Constructing and Commissioning HELIOS – A High Harmonic Generation Source for Pump-Probe Measurements with sub 50 fs Temporal Resolution : The Development of Experimental Equipment for Extreme Ultraviolet Spectroscopy." Doctoral thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-281298.

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This thesis presents HELIOS, an in-house laboratory for time-resolved pump-probe spectroscopy with extreme-ultraviolet (XUV) probe radiation. A wide span of pump wavelengths can be generated using commercial laser equipment while XUV probe radiation is generated via a high harmonic generation process in a noble gas delivering probe photons with energies between 20 eV and 72 eV. The XUV beam path features a time-preserving monochromator and was constructed and built in-house. HELIOS features an overall time resolution of about 50 fs when using 800 nm pump and 41 eV probe photons. An energy reso

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16

LaForge, Joshua Michael. "A polarization sensitive interferometer for Faraday rotation detection." Thesis, 2007. http://hdl.handle.net/1828/178.

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Time-resolved Faraday rotation (TRFR) is a pulsed laser pump/probe optical measurement used to characterize electron spin dynamics in semiconductor materials. A Mach-Zehnder type interferometer with orthogonally polarized arms is presented as a device for TRFR measurement that is superior to optical bridge detection, the traditional measuring technique, since Faraday rotation can be passively optically amplified via interference. Operation of the interferometer is analyzed under ideal conditions. Corrections to the ideal case stemming from imperfectly aligned optics, finite polarization extinc

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