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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 45 for “"monochromator"”.
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A Vacuum Grating Monochromator for the Far-Infrared
Made available in DSpace on 2014-12-08T22:24:07Z (GMT). No. of bitstreams: 1 6706716.pdf: 2223880 bytes, checksum: 4d1034c0645b282aa8454630c38e2f71 (MD5) Previous issue date: 1966
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Monochromator studies of nuclear resonance fluorescence in carbon, silicon, and magnesium
… aid of the University of Illinois bremsstrahlung monochromator. The studies had as objectives both the development of techniques needed to make the monochromator a better tool for studying nuclear levels and the investigation of the properties of selected levels. There are three aspects of the …
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Improved Performance of Multilayer Neutron Monochromator by Additon of Hydrogen in Titanium Layer
Made available in DSpace on 2017-07-06T18:48:52Z (GMT). No. of bitstreams: 3 Ju_Hyunsu_MS.pdf: 13210324 bytes, checksum: be7c79b6c5b4a6f2d301fa24ed847746 (MD5) Ju_Hyunsu_MS_ABS.pdf: 77999 bytes, checksum: 00214c3fb36571a3d0b25a628b64512e (MD5) license.txt: 4813 bytes, checksum: …
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Monochromator-based absolute calibration of radiation thermometers for thermodynamic temperature measurements of high-temperature fixed-points
… Aus diesem Grund wurde ein neuer auf einem Monochromator und einem Ulbrichtkugelstrahler basierender Vergleichsmessplatz entwickelt, der es erlaubt die spektrale Empfindlichkeit von Hochtemperatur-Strahlungsthermometern mit einer relativen Standardunsicherheit im sichtbaren …
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The design and construction of a photoelectric spectrophotometer for analytical research
… has been built, consisting of three parts, a monochromator, a photocell amplifier, and a recorder;The monochromator used a new optical system, a modification of the Wadsworth mounting for concave reflection diffraction gratings;Upon calibration of the monochromator using a helium spectrum tube …
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Photo-Nuclear Reactions in Silicon-28 by Monochromatic Photons of 17.1 Mev - 19.1 Mev
… MeV. The University of Illinois bremsstrahlung monochromator was used to define the incident gamma ray energy to about 300 keV. A 3 mm si detector was used as a target.
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The use of chemiluminescence for detection of ignition, temperature, and fuel-to-air ratio of flames
… an optical system composed of lenses and a monochromator by a system composed of a fiber optic cable and band pass interference filters. The use of a solid-state photodiode instead of a photomultiplier tube was investigated. Transient histories of the OH and CH signals were recorded by …
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The transmission characteristics of some optical crystals in the extreme ultraviolet
… for the vacuum ultraviolet using a SeyaNamioka monochromator. The characteristic low wavelength cutoffs were determined for crystals transmitting in the region 1050-2000 A. The crystals so studied are: MgF₂, NaF, LaF₃, SrF₂, BaF₂, BeO, Al₂O₃, KD*P, KDP, ADP, NaCl, NdF₃, KBr, CdF₃ and PrF₃. The …
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Characteristics of Multilayer Mirrors in the X-ray and Extreme Ultraviolet Radiation Ranges
… and high harmonic generation sources, i.e. monochromator, broad-angle supermirror, broadband intensity and polarising beamsplitters and order-selecting mirror. The particle swarm optimisation method was successfully applied in a global search of materials for the structure of mirrors. The …
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Raman scattering in heavy rare earth metals
… weak Raman signals of metals a single grating monochromator was designed and constructed and added to an existing double grating monochromator to improve the stray light rejection. Polarized Raman Scattering was used to probe vibrational and electronic excitations in Dy, Er and Y and magnetic …
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Generation of photocurrent from Photosystem I biomolecular complexes
… generate photocurrent. A setup consisting of a monochromator and lock-in amplifiers is used to measure the photocurrent along with an HP4156 analyzer. Atomic force microscopy images are also taken including those taken with a voltage-biased tip. Some devices are shown to work initially under …
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Generation and Langmuir probe analysis of a DC glow discharge and the deposition of chromium from a carbonyl precursor
… probe data with high resolution and accuracy. A monochromator was employed to record the light emission from the plasma. This identified which ionized species were present as well as the ion temperature from the resulting band structures present. The monochromator analysis was necessary to …
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Low frequency light scattering in fused silica and rubidium silver iodide
… highest temperature spectra. A double grating monochromator was used for analyzing these spectra. In RbAg I at 90C the longitudinal acoustic phonon was observed 4 5 by Brillouin scattering at a frequency shift consistent with known and measured physical properties of the crystal. The absolute …
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Sequentielle Photodoppelionisation in freien Metallatomen
… bestimmt werden. Das Verfahren wurde am <br>Monochromator TGM4 bei BESSY I erfolgreich angewendet. <br>Im dritten Experiment werden Interferenzeffekte zwischen 2s-Photoelektronen und <br>Coster-Kronig-Elektronen in Magnesium behandelt, die dann auftreten, wenn die <br>beiden Elektronen die …
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Soft x-ray near edge spectroscopy of cuprous oxide and silicon-germanium alloys
… grasshopper (ERG) grazing incidence grating monochromator for use in the VUV and soft x-ray spectral ranges, are presented.
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Thermomechanical sensitivity of microcantilever in the mid-infrared spectral region
… deflection when illuminated with IR light from a monochromator. Rigorous modeling and systematic characterization of the optical system allowed for a quantitative estimate of IR energy incident upon the cantilever. Separately, spectral absorptance of the cantilever was measured using Fourier …
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The use of chemiluminescence for the detection of temperature and fuel-to-air ratio in turbulent premixed flames
… a turbulent burner, an optical system (lenses, monochromator, and photomultiplier tube), and a data collection system (digital oscilloscope and computer). An optical system using fiber optics and band pass interference filters was also investigated. The spectra of turbulent, premixed methane …
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The Investigation of the Low Temperature Combustion of Mesitylene and Tert-Amyl Methyl Ether by Synchrotron Photoionization Mass Spectrometry
… booster ring, insertion devices, gas filters and monochromator are explained in Chapter 2. The data analysis method and the computational method used in the data analysis are expounded in Chapter 3.</p> <p>There are two combustion systems being investigated in this thesis. Mesitylene, an aromatic …
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