搜索结果: 136-150 共查到“理学 particles”相关记录475条 . 查询时间(0.067 秒)
GEANT4 Simulations of Gamma-Ray Emission from Accelerated Particles in Solar Flares
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/28
Gamma-ray spectroscopy provides diagnostics of particle acceleration in solar flares, but care must be taken when interpreting the spectra due to effects of the angular distribution of the accelerated...
Residence Times of Particles in Diffusive Protoplanetary Disk Environments I. Vertical Motions
Earth and Planetary Astrophysics (astro-ph.EP)
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2010/12/27
The chemical and physical evolution of primitive materials in protoplanetary disks are determined by the types of environments they are exposed to and their residence times within each environment.
The Relation Between Charged Particles and Muons With Threshold Energy 1 GeV in Extensive Air Showers Registered at the Yakutsk EAS Array
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/24
Characteristics of the muon component in EAS are analyzed together with their fluctuations. The aim of this analysis -- a comparison of experimental data with computational results obtained within fra...
Electrostatic trap catches tiny particles（图）
Electrostatic trap tiny particles
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2010/10/12
Researchers in Switzerland have demonstrated an innovative way of trapping tiny objects using electrostatic fields. The device could allow scientists to scrutinize much smaller biological molecules th...
Analyzing Correlations for spin-1/2 particles and Singlet pairs
Analyzing Correlations spin-1/2 particles Singlet pairs
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2010/10/29
We review the computation of correlations of successive projections of the spin onto axes for spin-1/2 particles and EPRB pairs (in the Singlet state). We assume forms of Realism (at least as general ...
Efficient Monte Carlo Algorithm for Simulating Reversible Aggregation of Multisite Particles
Efficient Monte Carlo Algorithm Simulating Reversible Aggregation Multisite Particles
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2010/11/15
We present an efficient and exact Monte Carlo algorithm to simulate reversible aggregation of particles with dedicated binding sites. This method introduces a novel data structure of dynamic bond tre...
Superimposed particles in 1D ground states
Superimposed particles 1D ground states
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2010/11/29
For a class of nonnegative, range-1 pair potentials in one dimensional continuous space we prove that any classical ground state of lower density 1 is a tower-lattice, i.e., a lattice formed by towe...
Highly time-resolved chemical characterization of atmospheric submicron particles during 2008 Beijing Olympic Games using an Aerodyne High-Resolution Aerosol Mass Spectrometer
chemical characterization atmospheric submicron particles 2008 Beijing Olympic Games an Aerodyne High-Resolution Aerosol Mass Spectrometer
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2010/10/11
As part of Campaigns of Air Quality Research in Beijing and Surrounding Region-2008 (CAREBeijing-2008), an Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) was deployed i...
Vacuum friction in rotating particles
Vacuum friction rotating particles
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2010/10/20
We study the frictional torque acting on particles rotating in empty space. At zero temperature,vacuum friction transforms mechanical energy into light emission and produces particle heating.However, ...
Dynamical enhancement of spatial entanglement in massive particles
Dynamical enhancement spatial entanglement massive particles
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2010/10/20
We discuss dynamical enhancement of entanglement in a driven Bose-Hubbard model and find
an enhancement of two orders of magnitude which is robust against fluctuations in experimental
parameters.
Simultaneous time-optimal control of the inversion of two spin 1/2 particles
Simultaneous time-optimal control inversion two spin 1/2 particles
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2010/10/18
We analyze the simultaneous time-optimal control of two-spin systems.The two non coupled spins which differ in the value of their chemical off-sets are controlled by the same magnetic fields. Using an...
Ordered and disordered dynamics in monolayers of rolling particles
Ordereddisordered dynamics monolayers of rolling particles
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2010/12/15
We consider the ordered and disordered dynamics for monolayers of rolling self-interacting par-
ticles with an o -set center of mass and a non-isotropic inertia tensor. The rolling constraint is cons...
Acceleration of particles by black holes -- general explanation
Acceleration of particles black holes -- general explanation
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2010/12/17
We give simple and general explanation to the effect of unbound acceleration of particles by black holes. It is related to the fact that the scalar product of a timelike vector of the four-velocity of...
Entanglement of Indistinguishable Particles
Entanglement Indistinguishable Particles
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2010/10/20
We present a general criterion for entanglement of N indistinguishable particles decomposed into arbitrary s subsystems based on the unambiguous measurability of correlation. Our argument provides a u...
On Duffin-Kemmer-Petiau particles with a mixed minimal-nonminimal vector coupling and the nondegenerate bound states for the one-dimensional inversely linear background
Duffin-Kemmer-Petiau theory nonminimal coupling Klein’s paradox
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2010/12/1
The problem of spin-0 and spin-1 bosons in the background of a general mixing of minimal and
nonminimal vector inversely linear potentials is explored in a unified way in the context of the Duffin-Ke...