Reference approval NF-1676 20205009594 Terrestrial Unmanned Roving Vertical Takeoff and Landing TUR(V)TOL
Reference approval NF-1676 20205009594 Terrestrial Unmanned Roving Vertical Takeoff and Landing TUR(V)TOL
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Materials Data on AlH18Ru(NF)6 by Materials Project
Ru(NH3)6AlF6 is Halite, Rock Salt structured and crystallizes in the cubic Pa-3 space group. The structure is zero-dimensional and consists of four AlF6 clusters and four Ru(NH3)6 clusters. In each AlF6 cluster, Al3+ is bonded in an octahedral geometry to six equivalent F1- atoms. All Al–F bond lengths are 1.84 Å. F1- is bonded in a single-bond geometry to one Al3+ atom. In each Ru(NH3)6 cluster, Ru3+ is bonded in an octahedral geometry to six equivalent N3- atoms. All Ru–N bond lengths are 2.12 Å. N3- is bonded in a distorted trigonal non-coplanar geometry to one Ru3+ and three H1+ atoms. All N–H bond lengths are 1.03 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom.
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Materials Data on AlH15(NF)6 by Materials Project
AlNH3F6(NH2)3(NH3)2 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is zero-dimensional and consists of twelve ammonia molecules, eight ammonia molecules, and four AlNH3F6 clusters. In each AlNH3F6 cluster, Al3+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of Al–F bond distances ranging from 1.81–1.87 Å. N2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. There is one shorter (1.04 Å) and two longer (1.05 Å) N–H bond length. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- and one F1- atom. The H–F bond length is 1.63 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Al3+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Al3+ atom. In the third F1- site, F1- is bonded in a distorted water-like geometry to one Al3+ and one H1+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Al3+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Al3+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one Al3+ atom.
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Materials Data on ZnAs2C12(NF)12 by Materials Project
Zn(CN)6(CN)6(AsF6)2 crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of eighteen hydrogen cyanide molecules, six AsF6 clusters, and three Zn(CN)6 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F1- atoms. There is three shorter (1.77 Å) and three longer (1.78 Å) As–F bond length. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one As atom. In the second F1- site, F1- is bonded in a single-bond geometry to one As atom. In each Zn(CN)6 cluster, Zn2+ is bonded in an octahedral geometry to six equivalent N3- atoms. All Zn–N bond lengths are 2.15 Å. C+3.83+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.16 Å. N3- is bonded in a linear geometry to one Zn2+ and one C+3.83+ atom.
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Materials Data on Sc2Cu3H36(NF)12 by Materials Project
ScH2F6ScCu2H10(N2F3)2Cu(NH)2(NH2)4(NH)2(H2)6 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of two ammonia molecules; four ammonia molecules; one copper;azanide molecule; six hydrogen molecules; one ScH2F6 cluster; and one ScCu2H10(N2F3)2 sheet oriented in the (0, 1, 0) direction. In the ScH2F6 cluster, Sc3+ is bonded in a square co-planar geometry to four F1- atoms. There is two shorter (1.95 Å) and two longer (2.01 Å) Sc–F bond length. H1+ is bonded in a bent 150 degrees geometry to two F1- atoms. There is one shorter (1.01 Å) and one longer (1.43 Å) H–F bond length. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in an L-shaped geometry to one Sc3+ and one H1+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Sc3+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one H1+ atom. In the ScCu2H10(N2F3)2 sheet, Sc3+ is bonded in a distorted square co-planar geometry to two equivalent N3- and two equivalent F1- atoms. Both Sc–N bond lengths are 2.18 Å. Both Sc–F bond lengths are 1.93 Å. There are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a square co-planar geometry to two equivalent H1+ and two equivalent F1- atoms. Both Cu–H bond lengths are 1.53 Å. Both Cu–F bond lengths are 1.80 Å. In the second Cu2+ site, Cu2+ is bonded in a distorted linear geometry to two equivalent N3- and two equivalent H1+ atoms. Both Cu–N bond lengths are 1.79 Å. Both Cu–H bond lengths are 2.12 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a 1-coordinate geometry to one Cu2+ and one H1+ atom. The N–H bond length is 1.02 Å. In the second N3- site, N3- is bonded in a distorted water-like geometry to one Sc3+ and two H1+ atoms. There is one shorter (1.04 Å) and one longer (1.06 Å) N–H bond length. There are five inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to two F1- atoms. There is one shorter (0.98 Å) and one longer (1.62 Å) H–F bond length. In the second H1+ site, H1+ is bonded in a distorted bent 150 degrees geometry to one N3- and one F1- atom. The H–F bond length is 1.54 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one Cu2+ atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one Cu2+ and one N3- atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 120 degrees geometry to one Cu2+ and one H1+ atom. In the second F1- site, F1- is bonded in a water-like geometry to one Sc3+ and one H1+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one H1+ atom.
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Materials Data on TiH12C2(NF)6 by Materials Project
TiF6(CN3H6)2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of four guanidinium molecules and two TiF6 clusters. In each TiF6 cluster, Ti4+ is bonded in an octahedral geometry to six F1- atoms. There is one shorter (1.89 Å) and five longer (1.90 Å) Ti–F bond length. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Ti4+ atom.
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Materials Data on SiH12C2(NF)6 by Materials Project
(CN3H6)2SiF6 crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of four guanidinium molecules and two SiF6 clusters. In each SiF6 cluster, Si4+ is bonded in an octahedral geometry to six F1- atoms. All Si–F bond lengths are 1.72 Å. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Si4+ atom.
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Materials Data on ZrH12C2(NF)6 by Materials Project
ZrF6(CN3H6)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four guanidinium molecules and one ZrF6 cluster. In the ZrF6 cluster, Zr4+ is bonded to seven F1- atoms to form edge-sharing ZrF7 pentagonal bipyramids. There are a spread of Zr–F bond distances ranging from 2.03–2.22 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the second F1- site, F1- is bonded in a bent 120 degrees geometry to two equivalent Zr4+ atoms. In the third F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom.
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Materials Data on MnCrH18(NF)6 by Materials Project
Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
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Materials Data on CrRu(NF)6 by Materials Project
RuN6CrF6 is Halite, Rock Salt structured and crystallizes in the cubic Pa-3 space group. The structure is zero-dimensional and consists of four chromium hexafluoride molecules and four hexaami-noruthenium molecules.
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Materials Data on NF by Materials Project
N2F2 crystallizes in the trigonal R-3m space group. The structure is zero-dimensional and consists of six hydrofluoric acid molecules and three nitrogen molecules.
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Materials Data on BS4(NF)4 by Materials Project
BF4(NS)4 is Tenorite-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four 1,3,5,7,2,4,6,8-tetrathiatetrazocane molecules and four BF4 clusters. In each BF4 cluster, B3+ is bonded in a tetrahedral geometry to four F1- atoms. There is three shorter (1.42 Å) and one longer (1.43 Å) B–F bond length. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one B3+ atom.
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Materials Data on VRu(NF)6 by Materials Project
RuN6VF6 is Halite, Rock Salt structured and crystallizes in the cubic Pa-3 space group. The structure is zero-dimensional and consists of four hexaami-noruthenium molecules and four VF6 clusters. In each VF6 cluster, V5+ is bonded in an octahedral geometry to six equivalent F1- atoms. All V–F bond lengths are 1.82 Å. F1- is bonded in a single-bond geometry to one V5+ atom.
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Materials Data on CrFeH18(NF)6 by Materials Project
Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
36 MATERIALS SCIENCE↗
Strongly vs. weakly coupled in-medium showers: energy stopping in large-Nf QED
Abstract Inside a medium, showers originating from a very high-energy particle may develop via medium-induced splitting processes such as hard bremsstrahlung or pair production. During shower development, two consecutive splittings sometimes overlap quantum mechanically, so that they cannot be treated independently. Some of these effects can be absorbed into an effective value of a medium parameter known as$$ \hat{q} $$ q ̂ . Previous calculations (with certain simplifying assumptions) have found that, after adjusting the value of$$ \hat{q} $$ q ̂ , the leftover effect of overlapping splittings is quite small for purely gluonic large-N c showers but is very much larger for large-N f QED showers, at comparable values ofNα. Those works did not quite make for apples-to-apples comparisons: the gluon shower work investigated energy deposition from a gluon-initiated shower, whereas the QED work investigated charge-deposition from an electron-initiated shower. As a first step to tighten up the comparison, this paper investigates energy deposition in the QED case. Along the way, we develop a framework that should be useful in the future to explore whether the very small effect of overlapping splitting in purely gluonic showers is an artifact of having ignored quarks.
Physics↗