Theoretical Studies of Silicon and Related Elements Reaction Surfaces and Dynamics of Potential High Energy Species

1993 ◽  
Author(s):  
Mark S. Gordon
Keyword(s):  
High Energy ◽  
Theoretical Studies ◽  
Reaction Surfaces

Theoretical Studies of High Energy Oxygen Atom Chemistry

2004 ◽  
Author(s):  
M. Braunstein ◽  
J. Duff ◽  
R. Shroll ◽  
L. Bernstein ◽  
S. Adler-Golden
Keyword(s):  
Oxygen Atom ◽  
High Energy ◽  
Theoretical Studies ◽  
Atom Chemistry

scholarly journals Signatures of QGP at RHIC and the LHC

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
T. Niida ◽  
Y. Miake
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
High Energy ◽  
Jet Quenching ◽  
Theoretical Studies ◽  
Debye Screening ◽  
Direct Photons ◽  
Ion Collisions ◽  
Experimental And Theoretical Studies

AbstractThe progress over the 30 years since the first high-energy heavy-ion collisions at the BNL-AGS and CERN-SPS has been truly remarkable. Rigorous experimental and theoretical studies have revealed a new state of the matter in heavy-ion collisions, the quark-gluon plasma (QGP). Many signatures supporting the formation of the QGP have been reported. Among them are jet quenching, the non-viscous flow, direct photons, and Debye screening effects. In this article, selected signatures of the QGP observed at RHIC and the LHC are reviewed.

scholarly journals Blazar jet physics in the age of Fermi

2010 ◽  
Vol 6 (S275) ◽  
pp. 111-121 ◽  
Author(s):  
Charles D. Dermer
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
Jet Physics ◽  
Theoretical Studies ◽  
Ultra High Energy ◽  
Large Area ◽  
High Energy Cosmic Rays ◽  
Spectrum Radio ◽  
The Impact ◽  
Radio Quasar

AbstractThe impact of the Fermi Gamma-ray Space Telescope on blazar research is reviewed. This includes a brief description of the Fermi Large Area Telescope, a summary of the various classes of extragalactic sources found in the First Large Area Telescope AGN Catalog, and more detailed discussion of the flat spectrum radio quasar 3C454.3 and the BL Lac object PKS 2155-304. Some theoretical studies related to ongoing blazar research with Fermi are mentioned, including implications of γ-ray observations of radio galaxies on blazar unification scenarios, variability in colliding shells, and whether blazars are sources of ultra-high energy cosmic rays.

scholarly journals The novel compound dimethylamine-5,5′-bistetrazole-1,1′-diolate: crystal structure, thermal investigation, safety evaluation and theoretical studies

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18523-18528 ◽  
Author(s):  
Yuehai Yu ◽  
Shusen Chen ◽  
Xin Li ◽  
Shaohua Jin ◽  
Lijie Li ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Safety Evaluation ◽  
High Energy ◽  
Theoretical Studies ◽  
The Novel ◽  
Thermal Behaviors ◽  
Thermal Investigation ◽  
Safety Parameters

The crystal of DMA-BTO, one unknown intermediate in the production of famous high energy insensitive explosive TKX-50, was easily prepared and characterized. Its thermal behaviors, safety parameters and theoretical studies were performed.

Ground-based measurements of turbulence in electrified clouds

2020 ◽  
Author(s):  
Evgeny Mareev ◽  
Vladimir Klimenko ◽  
Lev Lubyako ◽  
Mariya Shatalina ◽  
Svetlana Dementyeva ◽  
...  
Keyword(s):  
Electric Field ◽  
Brightness Temperature ◽  
Large Scale ◽  
High Energy ◽  
Passive Microwave ◽  
Theoretical Studies ◽  
Turbulence Characteristics ◽  
Electrical Structure ◽  
Convective Clouds

<p>A problem of the electric field dynamics in turbulent electro-active clouds (Cumulus, Stratus, Cumulonimbus) is one of the most relevant and complex problems of dynamical meteorology and atmospheric electricity. This problem is important for the study of intense large-scale electric field and its fluctuations that may lead to high-energy particle flows and lightning discharges, for electric current parameterization. Direct field measurements in convective clouds with a developed electrical structure are very difficult; so one of urgent tasks is the development of remote sensing methods for turbulence characteristics in electro-active clouds.</p><p>The growth of a large-scale electric field in a turbulent atmosphere is caused by the generation of an electric charge on colliding particles (hydrometeors and dust). Meanwhile, observations (including preliminary observations of the authors) and theoretical studies (Mareev and Dementyeva, 2017) show that intensification of thunderstorm activity can be associated with increased turbulence in the cloud. This paper presents new ideas and results of experimental and theoretical studies of the role of turbulence in electro-active clouds.</p><p>The main attention is paid to complex remote observations of different types of clouds with an experimental set-up including the microwave radiometers of 3 cm and 8 mm wavelengths (with a time resolution of order of one second), the network of electrostatic fluxmeters spaced by several kilometers each from another, and the meteorological radar. The data of recent several years were used for analysis. Note that recently space-borne passive microwave radiometry of intense convective clouds (see, for example, Peterson et al., 2017) attracted more attention compared to ground-based microwave observations. A principal idea of our approach is to use the wave-length channels allowing us to reveal both optically thick and optically transparent cloud events from the data on fluctuations in the brightness temperature of the atmosphere.</p><p>A special attention was paid to comparative analysis of the turbulence characteristics in thunderclouds and in clouds that do not have a developed electrical structure. The spectral characteristics of electric field and brightness fluctuations were found to be associated with atmospheric air turbulence and mostly are quantitatively described by Kolmogorov-type spectra. Compared with ordinary Cumulus and Stratus clouds, a limited band near a frequency of ~ 0.01 Hz with a higher level of fluctuations is distinguished in the spectral density of fluctuations in the brightness temperature of thunderclouds. The spectra of fluctuations of the electric field caused by thunderclouds, as well as turbulence interior thundercloud, are significantly different from the spectra caused by ordinary Cumulus and layered clouds.</p><p>The work was supported by the Russian Foundation for Basic Research (projects no. 19-05-00975 and 18-45-520010).</p><p>References</p><p>Mareev E.A., Dementyeva S.O. (2017), The role of turbulence in thunderstorm, snowstorm, and dust storm electrification. Journal of Geophysical Research: Atmospheres, V. 122, No. 13, P. 6976-6988. doi: 10.1002/2016JD026150.</p><p>Peterson M., Liu C., Mach D., Deierling W., Kalb C. (2015), A method of estimating electric fields above electrifi_ed clouds from passive microwave observations. J. Atmos. Ocean. Tech., V.32 (8), P.1429-1446. doi: 10.1175/ JTECH-D-14-00119.1.</p>

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