Results 41 to 50 of about 5,088,086 (295)
Maximal charge injection of a uniform separated electron pulse train in a drift space
Physical Review Special Topics. Accelerators and Beams, 2015 A charge sheet model is proposed to study the space charge effect and uniformity of charge separation of an electron pulse train in a drift space. An analytical formula is derived for the charge density limit as a function of gap spacing, injecting ...
Y. L. Liu +3 more
doaj +1 more source
Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator
Physical Review Accelerators and Beams, 2020 We report on the stable and continuous operation of a kilohertz laser-plasma accelerator. Electron bunches with 2.6 pC charge and 2.5 MeV peak energy were generated via injection and trapping in a downward plasma density ramp. This density transition was
L. Rovige +13 more
doaj +1 more source
Nature Communications, 2023 Intertwined spin and charge orders have been widely studied in high-temperature superconductors, since their fluctuations may facilitate electron pairing; however, they are rarely identified in heavily electron-doped iron selenides.
Ziyuan Chen +11 more
doaj +1 more source
C library for topological study of the electronic charge density [PDF]
Journal of Computational Chemistry, 2012 AbstractThe topological study of the electronic charge density is useful to obtain information about the kinds of bonds (ionic or covalent) and the atom charges on a molecule or crystal. For this study, it is necessary to calculate, at every space point, the electronic density and its electronic density derivatives values up to second order.
David Vega +2 more
openaire +3 more sources
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
The electron density: experimental determination and theoretical analysis [PDF]
, 1997 Two related lines of research in experimental electron density determination are reported in this thesis. In the first case, the well-proven and popular multipole modeling technique is applied to three high resolution, single-crystal X-ray diffraction ...
Smith, Gary Thomas
core
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Decay of Electric Charge on Corona Charged Polyethylene
, 2007 In this paper, the surface potential decay of corona-charged low density polyethylene (LDPE) films has been investigated. It has been found that for the same sample thickness the faster decay occurs in the sample with a higher charging voltage.
Zhiqiang Xu +8 more
core +1 more source
Magnetic refrigeration for nanoelectronics on a cryogen-free platform [PDF]
, 2015 Nanostructured samples serve as a playground of solid state physics due to their vast diversity of applications. In addition to various fabrication recipes and measurement methods, the temperature at which these experiments are performed plays a crucial ...
Maradan, D.
core +1 more source
In operando cryo-STEM of pulse-induced charge density wave switching in TaS2
Nature Communications, 2023 The charge density wave material 1T-TaS2 exhibits a pulse-induced insulator-to-metal transition, which shows promise for next-generation electronics such as memristive memory and neuromorphic hardware.
James L. Hart +5 more
doaj +1 more source