A spectrographic study of the absorption and scattering of light by small particles in the gas phase.
| dc.contributor.author | Anderson, Emmet Raymond. | |
| dc.creator | Anderson, Emmet Raymond. | en_US |
| dc.date.accessioned | 2011-10-31T18:27:09Z | |
| dc.date.available | 2011-10-31T18:27:09Z | |
| dc.date.issued | 1994 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10150/187030 | |
| dc.description.abstract | A new technique for studying small particles optically in the laboratory is described. A modern spectrograph using an image intensifier tube coupled to a CCD as a detector provides sensitivity comparable to that of a spectrometer using a photomultiplier tube, while preserving the advantages of a spectrograph. Using the instrument, small particles of sodium were studied in light scattering in the gas phase, and gas phase extinction measurements were made of magnesium, carbon, and C₆₀ (Buckminsterfullerene). In the scattering spectra of sodium, the ability of a spectrograph to image along the slit was used to simultaneously observe along a cross section of a small particle cloud, so it was possible to record the transition from the atomic vapor to diatomic sodium to small particles to larger particles. The gas phase surface plasmon feature of magnesium appeared quite different from previous measurements of particles collected on a substrate. On the other hand the spectra of carbon appeared to be quite similar to measurements on a substrate. The measurements of C₆₀ appear to be of the molecular vapor rather than of small particles. | |
| dc.language.iso | en | en_US |
| dc.publisher | The University of Arizona. | en_US |
| dc.rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. | en_US |
| dc.title | A spectrographic study of the absorption and scattering of light by small particles in the gas phase. | en_US |
| dc.type | text | en_US |
| dc.type | Dissertation-Reproduction (electronic) | en_US |
| dc.contributor.chair | Huffman, Donald R. | en_US |
| thesis.degree.grantor | University of Arizona | en_US |
| thesis.degree.level | doctoral | en_US |
| dc.contributor.committeemember | Bickel, William S. | en_US |
| dc.contributor.committeemember | Leavitt, John A. | en_US |
| dc.contributor.committeemember | Kohler, Sigurd | en_US |
| dc.contributor.committeemember | Emrick, Roy M. | en_US |
| dc.identifier.proquest | 9527992 | en_US |
| thesis.degree.discipline | Physics | en_US |
| thesis.degree.discipline | Graduate College | en_US |
| thesis.degree.name | Ph.D. | en_US |
| dc.description.note | This item was digitized from a paper original and/or a microfilm copy. If you need higher-resolution images for any content in this item, please contact us at repository@u.library.arizona.edu. | |
| dc.description.admin-note | Original file replaced with corrected file November 2023. | |
| refterms.dateFOA | 2018-08-23T18:35:17Z | |
| html.description.abstract | A new technique for studying small particles optically in the laboratory is described. A modern spectrograph using an image intensifier tube coupled to a CCD as a detector provides sensitivity comparable to that of a spectrometer using a photomultiplier tube, while preserving the advantages of a spectrograph. Using the instrument, small particles of sodium were studied in light scattering in the gas phase, and gas phase extinction measurements were made of magnesium, carbon, and C₆₀ (Buckminsterfullerene). In the scattering spectra of sodium, the ability of a spectrograph to image along the slit was used to simultaneously observe along a cross section of a small particle cloud, so it was possible to record the transition from the atomic vapor to diatomic sodium to small particles to larger particles. The gas phase surface plasmon feature of magnesium appeared quite different from previous measurements of particles collected on a substrate. On the other hand the spectra of carbon appeared to be quite similar to measurements on a substrate. The measurements of C₆₀ appear to be of the molecular vapor rather than of small particles. |
