Results 101 to 110 of about 37,276 (209)

Characteristic features of Shannon information entropy of confined atoms

, 2005
The Shannon information entropy of 1-normalized electron density in position and momentum space Sr and Sp, and the sum ST, respectively, are reported for the ground-state H, He+, Li2+, H−, He, Li+, Li, and B atoms confined inside an impenetrable ...
K. D. Sen, Sen , K. D.
core   +1 more source

The confined hydrogen atom

, 2018
We consider the confined hydrogen atom (CHA) in position and momentum space. To this end, we calculate numerically the wavefunctions and energies for various confinement radii and quantum numbers. We show breaking of degeneracy in CHA for n states. In the limit of an infinite confinement radii the well-known results for the non-confined hydrogen atom ...
openaire   +1 more source

Quantum Sensing in Tweezer Arrays: Optical Magnetometry on an Individual-Atom Sensor Grid

PRX Quantum
We implement a scalable platform for quantum sensing comprising hundreds of sites capable of holding individual laser-cooled atoms and demonstrate the applicability of this single-quantum-system sensor array to magnetic field mapping on a two-dimensional
Dominik Schäffner, Tobias Schreiber, Fabian Lenz, Malte Schlosser, Gerhard Birkl   +4 more
doaj   +1 more source

A scaling law of the neutral penetration length and Balmer-α wing shape in high-temperature plasmas

Nuclear Fusion
Hydrogen atoms penetrating deep inside high-temperature magnetically confined plasmas by repetitive charge-exchange collisions result in a particle source of the plasma, which affects the plasma transport significantly.
Keisuke Fujii, Masahiro Hasuo, Motoshi Goto, Jeremy D. Lore   +3 more
doaj   +1 more source

Photoionization of Fullerens and Atoms Confined in Fullerenes

, 2014
The photoionization cross sections of small fullerenes (C28, C32, C40, C44, and C50), and the outer and near-outer shells of atoms (noble gases, alkaline earth) confined endohedrally inside a C60 molecule are calculated employing a time-dependent local ...
Hadigheh Javani, Mohammad
core   +1 more source

Demonstration of a programmable optical lattice atom interferometer

Physical Review Research
Performing interferometry in an optical lattice formed by standing waves of light offers potential advantages over its free-space equivalents since the atoms can be confined and manipulated by the optical potential.
Catie LeDesma, Kendall Mehling, Jieqiu Shao, John Drew Wilson, Penina Axelrad, Marco Nicotra, Dana Z. Anderson, Murray Holland   +7 more
doaj   +1 more source

Magnetic traps for neutral atoms

, 2004
Magnetic trapping of neutral atoms is highly desirable for many applications. Because of the necessarily shallow depths of practical traps, atoms must be cooled to very low temperatures in order to be confined in them.
H. Metcalf
core   +1 more source

A single-atom potential confinement strategy for stabilizing rhodium nanocatalysts in methane oxidation

Nature Communications
Operating nanometal catalysts under harsh reaction conditions often leads to their disintegration into less active single atoms or clusters, which is considered as a primary cause of catalyst deactivation and loss of active components.
Chenxin Xu, Zhi-Qiang Wang, Tian Qin, Ze-Kai Yu, Dongrun Xu, Weiye Qu, Yiwei He, Yaxin Chen, Zhen Ma, Xi Liu, Xue-Qing Gong, Xingfu Tang   +11 more
doaj   +1 more source

Dynamic traction of lattice-confined platinum atoms into mesoporous carbon matrix for hydrogen evolution reaction

, 2018
Constructing atomically dispersed platinum (Pt) electrocatalysts is essential to build high-performance and cost-effective electrochemical water-splitting systems. We present a novel strategy to realize the traction and stabilization of isolated Pt atoms
Guan, Bu Yuan, Zhang, Peng, Zhang, Huabin, Lou, David Xiong Wen, Dong, Juncai, An, Pengfei, Zhou, Wei   +6 more
core   +1 more source

Structures and Properties of Atoms and Molecules Confined in Nanospaces. Structures and Properties of Atoms and Molecules Confined in Nanoporous Spaces.

Hyomen Kagaku, 2000
Different kinds of porous materials and molecular structures of representative gases in atmosphere are presented. The molecular potential pictures of atoms and molecules confined in graphitic slit micropores and cylindrical mesopores are given on the basis of Lennard-Jones potential.
openaire   +2 more sources