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Showing 1 to 20 of 772 for “"Alkali"”.
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Spectroscopic studies of alkali and zinc core levels in alkali metals
… investigation of the core excitation spectra of alkali and Zn impurities in alkali metal hosts are described. The excitation channels involved are the np6(n+l)s ~ np5(n+l)s2 transitions of 10 2 9 2 Cs(n=5), Rb(n=4) and K(n=3) cores, and the 3d 4s ~ 3d 4s 4p transitions of the Zn 3d core. The data …
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Assessment of alkali aggregate reaction avoidance measures and alkali aggregate reaction tests worldwide
Alkali Aggregate Reaction (AAR) is a deterioration mechanism which affects concrete structures all over the world. Different parts of the world employ various mitigation and control measures for AAR damage. Different tests are also performed worldwide to assess AAR. With the variety of AAR …
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Outer-core emission spectroscopy of the heavy alkalis and alkali-alkali metal alloys
… phonon broadening widths through the series of alkali metals Na, K, Rb, Cs. The emission profiles are remarkably similar and scale in width in close proportion to the Fermi energies. An exception is the MND ""x-ray edge anomaly"" response below threshold which decreased from Na to Cs and, for …
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VUV emission from the heavy alkali metals and rare gas impurities in alkali metals
… np6( n +1)8 outer core transitions in the heavy alkali metals K (n = 3), Rb (n = 4), and Cs (n = 5) has been examined as a function of temperature. The results are analyzed in terms of simple models to explain lineshape similarities and to extract lifetime and phonon broadening contributions. …
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Atomic alkali lasers pumped by the dissociation of photoexcited alkali-rare gas collision pairs
… has 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. …
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The Alkali Salts of Tribromguaiacol
University of Minnesota Masters thesis. May 1911. 1 computer file (PDF); 28 pages.
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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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Alkali attack on ceramic filters
… to predict the phases that would form when the alkali reacted with the aluminosilicate. The results of the thermodynamic calculations indicated that the alkali compounds will react at temperatures as low as 800°C. The exposure experiments verified this result. The phases that formed during the …
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Structural relaxations of glass-forming alkali-borate and alkali-tellurite in the GHz frequency range
… modulus of a series of strong glass-forming alkali-borate and fragile glass-forming alkali-tellurite systems. Lithium, sodium, and potassium, were added to the systems to determine their influence on the structure and degree of networking in these melts.
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Alkali Rydberg States in Electromagnetic Fields
We study highly excited hydrogen and alkali atoms (’Rydberg states’) under the influence of a strong microwave field. As the external frequency is comparable to the highly excited electron’s classical Kepler frequency, the external field induces a strong coupling of many different quantum …
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Nuclear Magnetic Resonance in Alkali-Metals
Made available in DSpace on 2015-05-12T17:11:47Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0007851.PDF: 4595068 bytes, checksum: a68304a767f1725198e01e7429742e17 (MD5) Previous issue date: 1954
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Color Center Reactions in Alkali-Halides
Made available in DSpace on 2015-05-12T17:12:22Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6100156.PDF: 4533901 bytes, checksum: a9ec96eb7d9f153ee7f6ac4dd798a971 (MD5) Previous issue date: 1960
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Nuclear Magnetic Resonance in Alkali Metals
Submitted by Jenny Wong-Welch (wongwel2@illinois.edu) on 2013-07-18T18:55:46Z No. of bitstreams: 1 1954_holcomb.pdf: 4595068 bytes, checksum: a68304a767f1725198e01e7429742e17 (MD5)
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Charge transfer states in alkali metals
… properties of high valence impurities in alkali metals are described. The principal phenomena revealed by both types of measurement is charge transfer from the alkali conduction band to localized orbitals bound on the impurities. The excitation spectra of halogen impurities in alkali …
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Nucleation kinetics in alkali amalgam vapors.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1973
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