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11.
T. Al Adlouni F. Meyer C. Meyer A. Fayt 《International Journal of Infrared and Millimeter Waves》1986,7(3):405-419
The perpendicularv
8 band lying in the 1000–1100 cm–1 region has been studied from infrared and laser Stark, spectra. We were interested in the part of spectrum corresponding to the spectral range of the 9 m CO2 laser lines. Assignments of rovibrational lines with J'<40 and K'<6 have been made. About 100 Stark resonances have been assigned to 12 rovibrational transitions. Effective molecular constants and dipole moment have been determined with high accuracy. A list of close resonances with CO2 laser lines is given and may be used for optical pumping experiments. 相似文献
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13.
New eight lanthanide metal complexes were prepared. These complexes were characterized by elemental analysis, molar conductivity measurements, spectral analysis (1H NMR, FT-IR, UV–vis), luminescence and thermal gravimetric analysis. All Ln(III) complexes were 1:1 electrolytes as established by their molar conductivities. The microanalysis and spectroscopic analysis revealed eight-coordinated environments around lanthanide ions with two nitrate ligands behaving in a bidentate manner. The other four positions were found to be occupied with tetradentate LIII ligand. Tb–LIII and Sm–LIII complexes exhibited characteristic luminescence emissions of the central metal ions and this was attributed to efficient energy transfer from the ligand to the metal center. The LIII and Ln–LIII complexes showed antibacterial activity against a number of pathogenic bacteria. 相似文献
14.
Single-crystal Eu3+-doped wurtzite ZnO micro- and nanowires were synthesized by chemical vapor deposition. The nanostructures grew via a self-catalytic mechanism on the walls of an alumina boat. The structure and properties of the doped ZnO were characterized using X-ray diffraction, energy-dispersive X-ray spectroscopy, scanning and transmission electron microscopy, and photoluminescence (PL) methods. A 10-min synthesis yielded vertically grown nanowires of 50–400 nm in diameter and several micrometers long. The nanowires grew along the ±[0001] direction. The Eu3+ concentration in the nanowires was 0.8 at.%. The crystal structure and microstructure of were compared for Eu3+-doped and undoped ZnO. PL spectra showed a red shift in emission for Eu3+-doped (2.02 eV) compared to undoped ZnO nanowires (2.37 eV) due to Eu3+ intraionic transitions. Diffuse reflectance spectra revealed widening of the optical bandgap by 0.12 eV for Eu3+-doped compared to undoped ZnO to yield a value of 3.31 eV. Fourier-transform infrared spectra confirmed the presence of europium in the ZnO nanowires. 相似文献
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17.
Abdus Salam 《Contemporary Physics》2013,54(5):337-350
Die Fernrohre und Entfevnungsmesser. By A. Konig and H. Kohler. 3rd Edition. (Berlin: Springer-Verlag, 1959.) [Pp. 475 +viii.] 88 dm. Electronic Contacts Handbook. By Ragnar Holm, aided by Else Holm. 3rd Edition. (Berlin: Springer-Verlag, 1958.) [Pp. 522.] 52 dm. From Nucleus to Universe. A Course of Selected Lectures in Physics and Astronomy in the University of Sydney, January 11-22,1960. Edited by Prof. S. T. Butler and Prof. H. Messel. (Sydney : Shakespeare Head Press Pty. Ltd., 1960.) [Pp. 335.] 84s. Gus Calorimetry. By C . G. Hyde and M. W. Jones. (2nd Edition.) (London : Ernest Benn Ltd., 1960.) [Pp. 456.] 105s. The Theory and Design of Inductance Coils. By V. G. Welsby. 2nd Edition. (London: Macdonald, 1960.) [Pp. 232+xviii.] 30s. Report of the Research Council of the Department of Scientific and Industrial Research for the year, 1958-59. (Cmnd. 1049, H.M.S.O., May 1960.) 4s. 6d. Mechanical Radiation. By R. B. Lindsay. (New York: McGraw Hill Book Co.) 77s. 6d. A French Course for Technologists and Scientists. By H. Sheldon Jackson and J. Standing. (London: Harrap.) 16s. Optics (Vol. 3 of A Degree Physics). By C. J. Smith. (Arnold, Jan. 1960.) [Pp. vii + 736.] 63s. The Hollow Universe. By Charles de Koninck. (Oxford University Press, 1960.) [Pp. 127.] 12s. 6d. 相似文献
18.
We calculate the leading and next-to-leading logarithmic resummed distribution for the jet broadening in deep inelastic scattering,
as well as the power correction for both the distribution and mean value. A truncation of the answer at NLL accuracy, as is
standard, leads to unphysical divergences. We discuss their origin and show how the problem can be resolved. We then examine
DIS specific procedures for matching to fixed order calculations and compare our results to the data. One of the tools developed
for the comparison is an NLO parton distribution evolution code. When compared to PDF sets from MRST and CTEQ it reveals limited
discrepancies in both.
Received: 16 October 2001 / Published online: 12 April 2002 相似文献
19.
V. A. Donchenko Al. A. Zemlyanov N. S. Panamarev V. A. Kharenkov 《Russian Physics Journal》2011,54(4):493-499
Spectral and energy luminescence characteristics of R6G dye solutions in ethanol with addition of Ag nanoparticle suspensions
in different aggregate states are experimentally investigated. It is demonstrated that incorporation of non-aggregated and
aggregated nanoparticles causes the superluminescence thresholds in R6G solutions to decrease. It is established that the
optical properties of the laser beam propagation channel are transformed when low-power (20 mW) cw laser radiation passes
through the suspension of nanoparticles. This is manifested through the occurrence of a region with enhanced nanoparticle
density in the laser beam center, on which diffraction of laser radiation is observed. 相似文献
20.
In this paper, we explored the conservation laws of cylindrically symmetric non-static space–times by using direct integration technique. This classification also covers non-static plane symmetric space–times, static cylindrically symmetric space–times and plane symmetric static space–times. In this paper, we will only present the results of non-static cylindrically symmetric and non-static plane symmetric space–times. The results of static cylindrically symmetric space–times and plane static space–times can be found in Shabbir and Khan (Mod Phys Lett A 25:525, 2010). It turns out that the non-static cylindrically symmetric space–times admit four, five, or seven conservation laws. It is important to note that the above space–times admit at least one or at the most four extra conservation laws. 相似文献