Dissociation-induced excitation of CsII in collisions of electrons with CsOH molecules

Dissociation-induced excitation of a singly charged cesium ion taking place as a result of collisions of electrons with CsOH molecules is investigated. Possible reaction channels in the low-energy region are discussed. It is established that sequential population plays an important role for 6p levels of Cs⁺. Moscow Power Engineering Institute, 14, Krasnokazarmennaya St., Moscow, 111250, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 2, pp. 159–165, March–April, 1998.     

Dissociative excitation of a cesium atom in collisions of slow electrons with CsF molecules

The method of extended intersecting beams is used for studying inelastic collisions of electrons with cesium fluoride molecules. Forty-six cross-sections for dissociative excitation of the spectral lines of a cesium atom located in the spectral region 387–825 nm were used. The behavior of the sections in the spectral series of a cesium atom is investigated, which is reflected by a power law. The values of constants that are parameters in the power-law formula are determined. Moscow Power Engineering Institute, 14, Krasnokazarmennaya St., E-250, Moscow, 105835, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 1, pp. 20–25, January–February, 1997.     

Formation of excited cesium ions in collisions of electrons with cesium iodide molecules

The process of formation of excited Cs ions in simple collisions of electrons with CsI molecules was investigated by the method of extended intersecting beams. Excitation cross sections measured for CsII spectral lines were used in the calculation of cross sections for excitation of energy levels. The contribution of cascade transitions to the total cross section for excitation of an energy level was determined for certain levels. Possible ways of formation of Cs^+* at low energies of the electrons are discussed. Moscow Power Engineering Institute, 14, Krasnokazarmennaya Str., E-250, Moscow, 111250, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 3, pp. 316–322, May–June, 1999.     

Excitation cross-sections of erbium-atom resonance lines

Moscow Power Institute, 14, Krasnokazarmennaya Str., E-250, Moscow, 105835. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 63, No. 6, pp. 883–888, November–December, 1996.     

Excitation of3 G 0-states of titanium, zirconium, and hafnium atoms by electron impact

Detailed information about excitation cross-selections of spectral lines of titanium, zirconium, and hafnium atoms obtained using extended crossed beams are used for calculation of the excitation cross-sections of the³G⁰-levels of these atoms. Results are compared with cross-sections calculated in Born’s approximation. For titanium: it is found that theoretical predictions agree well with experimental data. Differences found for zirconium are explained by the single-configuration approximation used in the calculation. Moscow Power Institute, Russia, 14 Krasnokazarmennaya St., 111250, Moscow E-250, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 6, pp. 707–710, November–December, 1997.     

Temperature dependence of the fine structure of vibronic bands of fluorescence of 1,4,5,8-tetraoxy-9,10-anthraquinone in a polymer matrix

L. Ya. Karpov Physicochemical Research Institute, 10, Obukhov Str., Moscow, 103064, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 2, pp. 65–69, March–April, 1995.     

Electron-impact excitation cross-sections for the3 S 0−,3 P 0−, and3 D 0-States of a ruthenium atom

The excitation cross-sections of transitions of a ruthenium atom from the³ S ⁰−,³ P ⁰−, and³ D ⁰-levels are measured by the method of extended crossed beams. Based on the results of measurements, the excitation cross-sections of the states are calculated (ignoring cascade contribution). Moscow Power Engineering Institute, 14, Krasnokazarmennaya St., Moscow, E-250, 111250, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 1, pp. 9–13, January–February, 1998.     

Dissociative excitation cross sections of the lead atom in collisions between electrons and PbI2 molecules

Dissociative excitation of the lead atom in e-PbI₂ collisions has been studied experimentally. 27 excitation cross sections were measured for an energy of the exciting electrons equal to 100 eV. Nine optical excitation functions were recorded with variation of the electron energy in the range 0–100 eV. The most probable reaction channels for low electron energies are discussed, as well as the ratio of the dissociative excitation cross sections for the lead atom in e-PbI₂ and e-PbCl₂ collisions. __________ Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 73, No. 6, pp. 701–706, November–December, 2006.     

Excitation cross-sections of the4Do-levels of a cobalt atom under electron collision conditions

Cross-sections of the⁴D^o-levels of a cobalt atom are determined based on the results of measurements of 880 excitation cross-sections of the CoI spectral lines. Detailed calculations of branching and cascade population are made for the levels of the terms z⁴D^o, y⁴D^o, and x⁴D^o. Results of the present work and the cross sections calculated by R. K. Peterkop in the Born approximation are shown to be in good agreement. Moscow Power Engineering Institute, 14, Krasnokazarmennaya St., Moscow, E-250, 111250, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 5, pp. 561–565, September–October, 1997.     

Specific features of the generation of aqueous solutions of Rhodamine 6G in laser pumping

M. V. Lomonosov Moscow State University, Vorob'yovy Gory, Moscow, 119899, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 63, No. 2, pp. 236–241, March–April, 1996.     

Electron impact excitation of high-lying states in the tungsten atom

The extended crossed-beam method has been used to study excitation of high-lying levels in the tungsten atom. 40 excitation cross sections of WI spectral lines have been measured for exciting electron energy 50 eV. Two optical excitation functions were recorded in the electron energy range 0–200 eV. The results obtained were used to calculate the total excitation cross sections of 24 odd WI energy levels. __________ Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 3, pp. 283–288, May–June, 2007.     

Effect of oxygen on the optical properties of ZnSe in the region of 0.44–20 μm

Moscow Power Engineering Institute, 14, Krasnokazarmennaya Str., Moscow, GSP, 105835, Russia. Translated from Zhurnal Prikladnois Spektroskopii, Vol. 63, No. 4, pp. 646–651, July–August, 1996.     

Spectral luminescent properties of monomeric and associated molecular forms of acridine dyes in polymer matrices

M. V. Lomonosov Moscow State University, Leninskie Gory, 119899, Moscow, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 2, pp. 38–46, March–April, 1995.     

Kinetics of electroluminescence of zinc sulfide

Time changes in the intensity of luminescence of zinc sulfide electroluminophores induced by rectangular unidirectional voltage pulses are considered. The origin of luminescence spikes that are observed under application and removal of voltage is discussed. Results of studies of these spikes and microscopic observations show that the light spikes observed under application of voltage can be ascribed to migration of holes that appear in barriers during the previous voltage pulse into the crystal interior. Moscow State University of Railway Transport, 15, Obraztsov St., Moscow, 101475, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 1, pp. 140–142, January–February, 1998.     

Radiation of pulsed and glow discharges in CCl4

The radiation of a pulsed-periodic discharge in CCl₄ has been investigated. Its spectrum is found to differ considerably from the spectrum of the glow discharge. It is found that ‖60% of the energy from the 215–650 nm region falls in the UV spectrum. Moscow Physicotechnical Institute, 9, Institutskii Per., Dolgoprudnyi, 141701, Moscow Region, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 2, pp. 302–305, March–April, 1998.     

Degree of coherence and dimensions of the generation region of powder lasers

A degree of coherence of powder-laser radiation of 10–20% is estimated by the magnitude of the image contrast for a speckle, although cases are recorded where it attains 40–50%. It is found that as the average speckle intensity increases, the contrast decreases. It is established that the minimum, dimensions of the generation region in powders are 20–30 μm. Cases of existence of several generation centers simultaneously are noted. An attempt to interpret the results obtained is made. Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11, Mokhovaya St., Moscow, 103907. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 5, pp. 780–786, September–October, 1998.     

Application of multiquantum ionization to measuring the ionization potentials of atoms and molecules of substances in the gas phase

A technique for measuring the ionization potentials of atoms and molecules is suggested which is distinguished by its accuracy and simplicity. N. E. Zhukovskii Air Force Engineering Academy, 40, Leningradskii Ave., Moscow, 125167, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 6, pp. 842–844, November–December, 1997.     

Spectral structure of polarization radiation from relativistic electrons in aluminum

Collective effects in polarization bremsstrahlung generated by relativistic electrons in a polycrystalline aluminum foil are studied experimentally on the basis of the 2.4-MeV electron accelerator installed at the Institute of Nuclear Physics (Moscow State University, Moscow). A peak structure found in this polarization bremsstrahlung for the first time is in agreement with theoretical predictions. __________ Translated from Yadernaya Fizika, Vol. 63, No. 11, 2000, pp. 2097–2100. __________ Translated from Yadernaya Fizika, Vol. 63, No. 11, 2000, pp. 2097–2100.     

Features of the magnetocaloric effect of Mn12−Ac in ultra-strong magnetic fields

A theoretical analysis is made of the behavior of the magnetocaloric effect of the high-spin organic cluster Mn₁₂−Ac in ultra-strong magnetic fields. Features of the effect which are attributable to intersection of the lower energy levels of the cluster in strong magnetic fields are examined. Moscow Institute of Electronics (Engineering University), Moscow. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, Vol. 42, No. 1, pp. 63–66, January, 1999.     

Glow discharge in helium at atmospheric pressure as a source of spectrum excitation

Self-maintained glow discharge at atmospheric pressure in a helium flow is used as an excitation source of spectra for analysis of the metals Na, Ca, Pb, Cd, and Zn in aqueous solutions of their salts. The intensities of the analytical lines of these metals are obtained as a function of the concentration, and the detection limits for each element are determined. Deceased. Institute of Molecular and Atomic Physics, Academy of Sciences of Belarus, 70, F. Skorina Ave., Misnk, 220072, Belarus. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 6, pp. 711–715, November–December, 1997.