搜索结果: 1-15 共查到“物理学 excitation”相关记录46条 . 查询时间(0.109 秒)
Cesium atoms shaken, not stirred, to create elusive excitation in superfluid
Cesium atoms shaken not stirred elusive excitation superfluid
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2015/3/4
Scientists discovered in 1937 that liquid helium-4, when chilled to extremely low temperatures, became a superfluid that could leak through glass, overflow its containers, or eternally gush like ...
Ambient beam motion and its excitation by ghost lines in the Tevatron
Ambient beam motion its excitation ghost lines Tevatron
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2012/2/28
Transverse betatron motion of the Tevatron proton beam is measured and analyzed. It is shown that the motion is coherent and excited by external sources of unknown origins. Observations of the time-va...
Excitation of plasmons in two-dimensional electron gas with defects by microwaves: Wake-field method
plasmons two-dimensional electron gas microwaves Wake-field method
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2011/8/17
Abstract: We develop an analytical method to find plasmons generated by microwaves in a two-dimensional electron gas with defects. The excitations are expressed in terms of the wake field of a charged...
Influences of excitation-dependent bandstructure changes on InGaN light-emitting diode efficiency
excitation-dependent bandstructure InGaN light-emitting diode efficiency Mesoscale and Nanoscale Physics
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2011/8/2
Abstract: Bandstructure properties in wurtzite quantum wells can change appreciably with changing carrier density because of screening of quantum-confined Stark effect. An approach for incorporating t...
An efficient method to calculate excitation energy transfer in light harvesting systems. Application to the FMO complex
calculate excitation light harvesting systems
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2011/9/15
A master equation, derived from the non-Markovian quantum state diffusion (NMQSD), is used to calculate excitation energy transfer in the photosynthetic Fenna-Matthews-Olson (FMO) pigmentprotein compl...
Wave Propagation and Quasinormal Mode Excitation on Schwarzschild Spacetime
Wave Propagation Quasinormal Mode Schwarzschild Spacetime General Relativity and Quantum Cosmology
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2011/7/28
Abstract: To seek a deeper understanding of wave propagation on the Schwarzschild spacetime, we investigate the relationship between (i) the lightcone of an event and its caustics (self-intersections)...
Optical Excitation and Decay Dynamics of Ytterbium Atoms Embedded in a Solid Neon Matrix
Ytterbium Atoms Embedded Optical Excitation and Decay Dynamics
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2011/9/2
Neutral ytterbium atoms embedded in solid neon qualitatively retain the structure of free atoms. Despite the atom-solid interaction, the 6s6p 3P0 level is found to remain metastable with its lifetimes...
IR Bismuth active centers in optical fibers: Combined excitation-emission spectroscopy
IR Bismuth active centers excitation-emission spectroscopy
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2011/9/2
Впервые получены 3-мерные спектры люминесценции (интенсивность люминесценции в зависимости от длин волн возбуждения и эмиссии) легированных висмутом волоконных световодов различного состава в широком ...
Harmonics generation and intense terahertz radiation from polar molecules at multiphoton resonant excitation in laser fields
laser fields polar molecules Harmonics generation and intense terahertz radiation
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2011/9/1
The coherent radiation spectrum of two-level polar molecules with UV transition is studied at the multiphoton resonant excitation by a moderately strong laser field. The spectrum corresponding to harm...
On Narrow Nucleon Excitation N*(1685)
Narrow Nucleon Excitation
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2011/4/7
On Narrow Nucleon Excitation N*(1685) 。
Hindrance of the excitation of the Hoyle state and the ghost of the $2^+_2$ state in $^{12}$C
Hindrance excitation Hoyle state ghost $2^+_2$ state $^{12}$C
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2010/12/27
While the Hoyle state (the isoscalar $0^+_2$ excitation at 7.65 MeV in $^{12}$C) has been observed in almost all the electron and $\alpha$ inelastic scattering experiments, the second $2^+$ excited s...
Hindrance of the excitation of the Hoyle state and the ghost of the $2^+_2$ state in $^{12}$C
Hindrance of the excitation of the Hoyle state ghost of the $2^+_2$ state
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2011/1/7
While the Hoyle state (the isoscalar 0+2 excitation at 7.65 MeV in 12C) has been observed in almost all the electron and inelastic scattering experiments,the second 2+ excited state of 12C at Ex ≈ 1...
Excitation of acoustic waves by vortices in the quiet Sun
acoustic waves the quiet Sun
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2010/11/18
Five-minutes oscillations is one of the basic properties of solar convection. Observations show mixture of a large number of acoustic wave fronts propagating from their sources. We investigate the pr...
Scintillation of thin tetraphenyl butadiene films under alpha particle excitation
thin tetraphenyl butadiene films alpha particle excitation
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2010/11/16
The alpha induced scintillation of the wavelength shifter 1,1,4,4-tetraphenyl-1,3-butadiene (TPB) was studied to improve the understanding of possible surface alpha backgrounds in the DEAP dark matter...
The excitation of a two-level atom by a propagating light pulse
The excitation two-level atom propagating light pulse
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2010/11/8
State mapping between atoms and photons, and photon-photon interactions play an important role in scalable quantum information processing. We consider the interaction of a two-level atom with a quant...