Search results for "Substructure"
showing 10 items of 546 documents
Primary- and secondary-octahedral distortion factors in bis(1,4-H2-1,2,4-triazolium) pentabromidoantimonate(III) –1,4-H2-1,2,4-triazolium bromide
2015
Abstract The analysis of octahedral distortion in the structure of inorganic–organic (C2H4N3)2[SbBr5]·(C2H4N3)Br (BTPTB) bromidoantimonate(III) determined at 295 and 85 K, supported by the Hirshfeld surface analysis and the data retrieved from the Cambridge Structural Database, is presented. The anionic substructure of BTPTB is built from distorted [SbBr6]3− octahedra that are connected by the cis corners forming polymeric one-dimensional [{SbBr5}n]2n− zig-zag chains running parallel to the a axis and isolated Br− ions. The organic substructure consists of the fully ordered 1,4-H2-1,2,4-triazolium cations. The oppositely charged substructures are linked by the system of N(C)–H⋯Br hydrogen b…
Performance of jet substructure techniques for large-$R$ jets in proton-proton collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector
2013
This paper presents the application of a variety of techniques to study jet substructure. The performance of various modified jet algorithms, or jet grooming techniques, for several jet types and event topologies is investigated for jets with transverse momentum larger than 300 GeV. Properties of jets subjected to the mass-drop filtering, trimming, and pruning algorithms are found to have a reduced sensitivity to multiple proton-proton interactions, are more stable at high luminosity and improve the physics potential of searches for heavy boosted objects. Studies of the expected discrimination power of jet mass and jet substructure observables in searches for new physics are also presented.…
Double- and Multi-Calixarentes
2006
Calixarenes are easily (and often selectively) functionalized and therefore they can be combined in various ways to larger molecules containing more than one calixarene substructure. In the following chapter we will try to give an overview on such multicalixarenes held together by "conventional" covalent links. Self-assembled structures are treated separately in Chapter 8. The earliest examples for double calixarenes of importance are the carcerands and hemicarcerands of D. Cram in which two resorcarene derived cavitands are combined. Due to their unique properties to include (more or less permanently) smaller molecules, they are treated separately in Chapter 10. Further combinations of cav…
Detection of vortex tubes in solar granulation from observations with Sunrise
2010
We have investigated a time series of continuum intensity maps and corresponding Dopplergrams of granulation in a very quiet solar region at the disk center, recorded with the Imaging Magnetograph eXperiment (IMaX) on board the balloon-borne solar observatory Sunrise. We find that granules frequently show substructure in the form of lanes composed of a leading bright rim and a trailing dark edge, which move together from the boundary of a granule into the granule itself. We find strikingly similar events in synthesized intensity maps from an ab initio numerical simulation of solar surface convection. From cross sections through the computational domain of the simulation, we conclude that th…
Plastic deformation of selenium single crystals ina glide and X-ray observation of the induced substructure
1976
In the plastic deformation of trigonal selenium, a glide in the prismatic planes {1010} is found to be thermally activated, as in tellurium. The activation parameters are determined and a value for the maximum activation energy ΔGmax ≈ (0.6 ± 0.1) eV is obtained. The elastic limit increases up to σ ≈ 100 N mm−2 at low temperatures while it is only σ ≈ 1 N mm−2 at room temperature, i.e. in the athermal region. The deformation induced dislocation substructure is studied by X-ray reflection topography at different temperatures from 77 to 300 K in melt-grown single crystals. It is found that glide polygonization occurs forming rough tilt subgrain boundaries in the prismatic planes. In the ather…
"Lund jet plane 1D" of "Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton collisions with the ATLAS detector"
2020
Normalized differential cross-section of the Lund jet plane. The first systematic uncertainty is detector systematics, the second is background systematic uncertainties. The data is presented as a 1D distribution, for use in MC tuning.
"Lund jet plane 2D" of "Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton collisions with the ATLAS detector"
2020
Normalized differential cross-section of the Lund jet plane. The first systematic uncertainty is detector systematics, the second is background systematic uncertainties
"Lund jet plane: horizontal slice, 5.13 < ln(1/z) < 5.41" of "Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton…
2020
Normalized differential cross-section of the Lund jet plane. The first systematic uncertainty is detector systematics, the second is background systematic uncertainties. The data is presented as a 1D distribution, for a single horizontal slice of the Lund jet plane between 5.13 < ln(1/z) < 5.41.
"Lund jet plane: horizontal slice, 3.19 < ln(1/z) < 3.47" of "Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton…
2020
Normalized differential cross-section of the Lund jet plane. The first systematic uncertainty is detector systematics, the second is background systematic uncertainties. The data is presented as a 1D distribution, for a single horizontal slice of the Lund jet plane between 3.19 < ln(1/z) < 3.47.
"Lund jet plane: horizontal slice, 5.41 < ln(1/z) < 5.68" of "Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton…
2020
Normalized differential cross-section of the Lund jet plane. The first systematic uncertainty is detector systematics, the second is background systematic uncertainties. The data is presented as a 1D distribution, for a single horizontal slice of the Lund jet plane between 5.41 < ln(1/z) < 5.68.