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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 54 for “"Rare gas"”.
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Rare gas alkali ionic excimers
The rare gas alkali ionic molecules are established as a new class of ionic excimers which emit in the vacuum ultraviolet (VUV) regime of the electromagnetic spectrum. Temporal and spectral characteristics of these species with (XeRb)$\sp{+}$ at 164 nm and (XeCs)$\sp{+}$ at 160 nm have been …
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SODIUM - RARE-GAS VAN DER WAALS MOLECULES
… from the red wing of the Na D-lines perturbed by rare-gas atoms has been measured as a function of temperature and rare-gas density. These observations were then combined with a quasistatic analysis to determine the potential well depths and the emission peak wavelengths for ${\rm Na(3P)He}\sb2,$ …
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Excited-State Magnesium-Rare Gas Optical Collisions
… magnesium (3s3p <sup>1</sup>P<sub>1</sub>) - rare gas optical collisions. The magnesium was excited by a linearly polarized laser tuned to the 3s<sup>2</sup>1s<sub>0</sub> → 3s3p <sup>1</sup>P<sub>1</sub> atomic transition at 285 nm. A second linearly polarized laser was tuned near the 3s3p …
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Rare-gas clusters in intense VUV laser fields
A hybrid quantum-classical approach to the interaction of atomic clusters with intense laser fields in the vacuum ultra-violet (VUV) has been developed. Much emphasis is put on localized electrons, those quasi-free electrons which localize about the ions and screen them. These electrons set a time …
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Diffusion in rare-gas liquids : an experimental study
This thesis describes the design and development of an apparatus for measuring the diffusion coefficients of cryogenic liquids. The diaphragm cell method is used. The experimental apparatus has a facility for the continuous monitoring of a radioactive tracer which is diffusing across a sintered …
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Diffusion in rare-gas liquids : an experimental study
This thesis describes the design and development of an apparatus for measuring the diffusion coefficients of cryogenic liquids. The diaphragm cell method is used. The experimental apparatus has a facility for the continuous monitoring of a radioactive tracer which is diffusing across a sintered …
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Electronic and structural properties of rare gas cation clusters
… and ground and excited state properties of rare gas cation clusters, Rg<sup>+</sup><sub>N</sub>, for N=3-60. The main goal is to understand how the positive charge is delocalized over the cluster and the relationship between cluster geometry and delocalization. He<sup>+</sup><sub>N</sub>, …
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Optical Studies of Rare Gas Impurities in Alkali Metals
Made available in DSpace on 2015-05-12T22:39:11Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7511802.PDF: 4165954 bytes, checksum: 0de9c0bb1c1b04d3b220214fa8dc494b (MD5) Previous issue date: 1974
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Optical Studies of Rare Gas Impurities in Alkali Metals
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-01-09T21:42:07Z No. of bitstreams: 1 1974_tilton.pdf: 4324042 bytes, checksum: 231302e618becf1a28c904a0d79f7881 (MD5)
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Optical and Electrical Studies of Alkali Metal - Rare Gas Alloys
Made available in DSpace on 2015-05-12T22:39:10Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7511798.PDF: 3892375 bytes, checksum: bcc11df4ade60aa409a6098f96f46e04 (MD5) Previous issue date: 1974
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Optical and Electrical Studies of Alkali Metal-Rare Gas Alloys
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2012-01-09T20:48:38Z No. of bitstreams: 1 1974_phelps.pdf: 4065931 bytes, checksum: 3034fd33f5872a4688018f9823471660 (MD5)
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Satellite bands of absorption in alkali vapor–rare gas mixtures
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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Dependence of rare-gas adsorbate dipole moment on substrate work function
"The distinctly different behaviors of rare gas adsorbed on various metals has been a puzzle for more than two decades. On refractory metals, the deduction of the metal work functions is unexpectedly large, while on simple metals, the effect is nearly undetectably small. The ""switching"" theory …
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Time-resolved absorption spectroscopy of the rare gas dimer Rydberg states
Molecular inter-Rydberg transitions of the rare gas dimers (He$\sb2$ through Kr$\sb2$) have been observed both through intra-cavity and multi-pass laser absorption spectroscopy.
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Modeling of high-pressure rare gas lasers: Kinetics and plasma chemistry
… the wide range of operating parameters. Three rare gas lasers have been computationally investigated: the Xe laser with Ar, He/Ar and Ne/Ar buffer gases, the Ne laser with He/Ar buffer gases and the Ar laser with He buffer gases.
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Alkali-rare gas photodissociation lasers: applications to laser physics and atom-atom interactions
… describes several experiments in which alkali--rare gas laser systems are utilized as a simple platform with which to isolate and study atom-atom interactions and fundamental physical processes that are ill-understood or have never been investigated previously. Specifically, the minimum …
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VUV emission from the heavy alkali metals and rare gas impurities in alkali metals
… to date concerning emission from Rb or Cs. Rare gas impurities in alkali metal host lattices, when studied previously by absorption metods, showed an anomalously broad and suppressed Fermi edge, in contrast to theoretical predictions. It was speculated that this threshold shape may be …
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Atomic alkali lasers pumped by the dissociation of photoexcited alkali-rare gas collision pairs
… been demonstrated in which photoexcited alkali-rare gas collision pairs dissociate in order to produce inversion on atomic alkali transitions. The pump acceptance bandwidths of these excimer bands, historically referred to as spectral satellites, have been observed to be as broad as 5 nm. This …
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Velocity dependence of rotationally inelastic cross-sections for Li*2(A1[Sigma]) colliding with rare gas atoms
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1983.
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Experimental and Theoretical Analysis of the Luminescence Spectroscopy of atomic Mercury and atomic Manganese isolated in Rare Gas Solids
… manganese isolated in cryogenic thin films of rare gases argon, krypton and xenon. The luminescence spectroscopy of solid-state M/RG (M = Hg and Mn; RG = Ar, Kr and Xe) samples has been recorded employing both time-integrated (steady-state) and time-resolved methods. The impetus for the …
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