Download or read book I Vacuum ultraviolet Emission and Absorption Study of Rare gas Molecules written by Kwok-Wing Chow and published by . This book was released on 1970 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Vacuum Ultraviolet Emission Continua in the Rare Gases written by Robert E. Huffman and published by . This book was released on 1961 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several new vacuum ultraviolet-emission continua recently observed in the spectra of the rare gases helium, argon, and xenon are discussed. These spectra were produced with a windowless light source operated as a repetitive condensed discharge and equipped with a differential pumping system to separate the high pressure (up to 800 mm Hg of helium) light source from the 2-m vacuum spectrograph (pressure 1/1000 mm Hg). In helium two continua were observed at pressures above 150 mm in addition to the weaker 600 to 950 angstroms continuum. The brightest extends from about 1050 to above 4000 angstroms and seems connected with greatly enhanced lines of He(II). The other continuum is the completely broadened principal series extending from 584 to about 510 angstroms and containing broadened principal series absorption lines. With argon in a flow system or xenon isolated with a LiF window, previously observed continua were extended from their resonance lines to beyond 3000 angstroms. Details of the experimental observations and possible explanations of these continua are presented. (Author).
Download or read book High Resolution Vacuum Ultraviolet Spectroscopy of Small Molecules written by W. H. Parklinson and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 6.65 metre vacuum spectrograph operated at a wavelength resolution of 0.0006 nm has been used to study the spectroscopy of rare gas molecules relevant to the development of intense vacuum ultraviolet radiation sources and lasers, and photoabsorption and predissociation processes in molecular nitrogen, which in the 80-100 nm region are important sources of upper atmospheric atomic nitrogen. Absorption spectra of XeHe, XeNe, XeAr, XeKr, KrHe, KrNe, and KrAr have been photographed and interpreted as arising from transitions from bound ground states to bound or free excited electronic states of these van der Waals molecules; bound excited states have been found for XeKr and XeAr. The emission spectrum of diatomic argon in the 100-150 nm region has been found to consist of four band systems all terminating on the ground electronic state; the only discrete band system, that emitted from the lowest excited state, has been analyzed rotationally and characterized spectroscopically as a triplet state for which the long range potential has been estimated. The absorption spectrum of atomic krypton in the 84-124 nm region has been obtained, and excited Rydberg states with principal quantum number as high as 60 have been assigned; the lowest two ionization energies have been accurately determined. High resolution absorption spectra of dipole allowed transition in molecular nitrogen, from the ground state to excited Rydberg and valence states have been rotationally analyzed. Some large anomalies in frequency spacings and relative intensities have been interpreted in terms of strong homogeneous perturbations rather than predissociations. (Author).
Download or read book Research in Vacuum Ultraviolet Absorption Processes and Experimental Techniques written by John L. Roebber and published by . This book was released on 1968 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of investigations of absorption and emission processes in gases important in upper atmosphere chemistry and physics by a wide variety of spectroscopic techniques are presented. The principle area studied is the vacuum ultraviolet at wavelength less than 3000 A using monochromators and spectrographs equipped with rare gas continua and hydrogen continua light sources. Sample cells suitable for work at 20K or between room temperature and 650K, gas chromatography apparatus for purifying samples, fluorescence apparatus to obtain the visible and ultraviolet emission spectra of gases excited by vacuum ultraviolet irradiation, an apparatus for flash photolysis studies, and data processing equipment are described. Experimental studies of the absorption spectrum of carbon suboxide, the fluorescence spectrum of the methoxyl radical, the flash photolysis of methyl nitrite and absorption and emission spectra of the products of a microwave discharge through sulfur dioxide are reported. Finally, theoretical calculations on the electronic structure of carbon dioxide and carbon suboxide are discussed. (Author).
Download or read book Vacuum Ultraviolet Light Sources written by Robert E. Huffman and published by . This book was released on 1965 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photophysics and Photochemistry in the Vacuum Ultraviolet written by S.P. McGlynn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 953 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the texts of the Invited Lectures pre sented at the NATO Advanced Study Institute PHOTOPHYSICS AND PHOTOCHEMISTRY IN THE VACUUM ULTRAVIOLET, which was held at the Interlaken Lodge in Lake Geneva, Wisconsin USA, August 15-28, 1982. This ASI was the third in a series of NATO Institutes de voted to a study of the physical and chemical transformations undergone by atoms and molecules after absorption of high-energy (VUV
Download or read book Autoionization Spectra of Gases Observed in the Vacuum Ultraviolet written by Robert E. Huffman and published by . This book was released on 1964 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book VACUUM ULTRAVIOLET STUDIES OF RARE GASES AND RARE GAS MIXTURES EXCITED WITH PULSED HIGH ENERGY ELECTRON BEAMS written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vacuum Ultraviolet Studies of Molecular Dynamics written by and published by . This book was released on 1994 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tunable vacuum ultraviolet radiation generated by four-wave mixing will be used to probe collisional energy transfer and photodissociation. Collisional relaxation of the S((1)D) velocity distribution by rare gases has been measured to learn to what extent this simple process can be described by a hard-sphere, elastic interaction. E yielding V transfer was studied from S((1)D) to CO and N2, both by examining the Doppler profile of the relaxed atoms and by direct measurement of the CO(v, J) distribution. Finally, the photodissociation of O3 and N2O have been investigated by monitoring the Doppler profiles of the resulting O((1)D) lines. This integrated program of molecular dynamics studies using vacuum ultraviolet radiation has enhanced our knowledge both of the chemical physics of these basic processes and of the interaction of high energy photons with small molecules found in the upper atmosphere. Vacuum Ultraviolet Light, Molecular Dynamics, Ozone, Nitrous Oxide, CO.
Download or read book Vacuum Ultraviolet Emission and Absorption Properties of Gases and Hot Plasmas written by Masaru Ogawa and published by . This book was released on 1974 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report briefly summarizes research on the interaction of vacuum ultraviolet (vuv) with matter, including absorption and emission by gases and hot plasmas and atmospheric chemistry applications. Publications and personnel are listed.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Scattering and Fluorescence of Gases in the Vacuum Ultraviolet written by and published by . This book was released on 1970 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of spectral absorption and photoionization cross sections of CO2, NH3, O2, COS, NO, N2, and vinyl chloride in the region 580 - 1650 A were made. A number of new Rydberg series were found and the convergence limits were compared with the photoionization values. In the study of dispersed fluorescence from molecules, particular attention was given to the emissions from CO, NH3, N2, and NO in the spectral region 1800 to 6000 A. The experimental Franck-Condon theoretical values. The excitation spectra of NO show many overlapping states. The excitation spectra of other molecules such as H2, O2, and SO2 were studied, and certain features of the emission spectra can be related to the spectral absorption. The effect of molecular collisions on the fluorescence of NO was investigated.
Download or read book New Vacuum Ultraviolet Emission Continua in the Rare Gases written by R. E. Huffman and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several new vacuum ultraviolet-emission continua recently observed in the spectra of the rare gases helium, argon, and xenon are discussed. These spectra were produced with a windowless light source operated as a repetitive condensed discharge and equipped with a differential pumping system to separate the high pressure (up to 800 mm Hg of helium) light source from the 2-m vacuum spectrograph (pressure 1/1000 mm Hg). In helium two continua were observed at pressures above 150 mm in addition to the weaker 600 to 950 angstroms continuum. The brightest extends from about 1050 to above 4000 angstroms and seems connected with greatly enhanced lines of He(II). The other continuum is the completely broadened principal series extending from 584 to about 510 angstroms and containing broadened principal series absorption lines. With argon in a flow system or xenon isolated with a LiF window, previously observed continua were extended from their resonance lines to beyond 3000 angstroms. Details of the experimental observations and possible explanations of these continua are presented. (Author).
Download or read book Vacuum Ultraviolet Photoionization and Photodissociation of Molecules and Clusters written by Cheuk-Yiu Ng and published by World Scientific. This book was released on 1991 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph reviews the recent progress in vacuum ultraviolet (VUV) photoionization and photodissociation processes. Photoionization, photoelectron, and fluorescence spectroscopic techniques have played an important role in revealing the photoionization and photodissociation dynamics of molecules in the vacuum ultraviolet region and in providing accurate energetic and spectroscopic information of ions as well as neutral molecules. The book represents the first detailed review of major experimental developments in the studies of single vacuum ultraviolet photon ionization and dissociation processes of gaseous molecules and clusters.
Download or read book New Excitation Unit for the Rare Gas Continua in the Vacuum Ultraviolet written by Robert E. Huffman and published by . This book was released on 1965 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vacuum ultraviolet Emission and absorption spectrum of the NO Molecule written by Christian Jungen and published by . This book was released on 1966 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
