搜索结果: 151-165 共查到“知识库 理学 nuclear”相关记录344条 . 查询时间(0.046 秒)
Nuclear Gamma-Ray Laser of Optical Range
Nuclear Gamma-Ray Laser Optical Range
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2010/11/17
A possibility of amplification of the 7.6 eV (3.5 eV) $\gamma$-radiation by the stimulated $\gamma$-emission of the ensemble of the $^{229m}$Th isomeric nuclei in a host dielectric crystal with a lar...
Nuclear PDFs at NLO - status report and review of the EPS09 results
Nuclear PDFs NLO - status report review of the EPS09 results
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2011/1/10
review the current status of the global DGLAP analysis of nuclear parton distribution functions, nPDFs.
Challenges for Modeling Nuclear Structure: Are the Proton and Neutron Masses and A-body Interactions Relevant?
Modeling Nuclear Structure A-body Interactions Relevant
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2011/1/7
We discuss some of the challenges that future nuclear modeling may face in order to improve the description of the nuclear structure. One challenge is related to the need for A-body nuclear interactio...
Recent progress on nuclear potentials from lattice QCD
Recent progress nuclear potentials lattice QCD
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2011/1/10
A new method for nuclear potentials is reviewed. The strategy to extract the potential from the
Nambu-Bethe-Salpeter wave function in lattice QCD is explained and the first result based on the method...
Nuclear spin pumping and electron spin susceptibilities
Nuclear spin pumping electron spin susceptibilities
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2010/11/23
In this work we present a straightforward formalism to evaluate the nuclear spin dynamics driven by hyperfine interaction with non-equilibrium electron spins. To describe the dynamics up to second ord...
Free Products and the Lack of State Preserving Approximations of Nuclear C*-algebras
Free Products Nuclear C*-algebras
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2010/11/17
Let $A$ be a homogeneous C*-algebra and $\phi$ a state on $A.$ We show that if $\phi$ satisfies a certain faithfulness condition, then there is a net of finite-rank, unital completely positive, $\phi...
The KamLAND-experiment and Soliton-like Nuclear Georeactor. Part 1. Comparison of Theory with Experiment
The KamLAND-experiment Soliton-like Nuclear Georeactor
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2010/11/18
We give an alternative description of the data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's co...
Dark Atoms of the Universe: towards OHe nuclear physics
Dark Atoms Universe OHe nuclear physics
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2011/1/10
The nonbaryonic dark matter of the Universe is assumed to consist of new stable particles. A specific case is possible, when new stable particles bear ordinary electric charge and bind in heavy ”atoms...
Finding approximately rank-one submatrices with the nuclear norm and l1 norm
rank-one submatrices the nuclear norm and l1 norm
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2010/11/15
We propose a convex optimization formulation with the nuclear norm and $\ell_1$-norm to find a large approximately rank-one submatrix of a given nonnegative matrix. We develop optimality conditions f...
Astronomy with Radioactivities: Chapter 9, Nuclear Reactions
Astronomy Radioactivities Nuclear Reactions
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2010/11/10
Nuclear reaction rates determine the abundances of isotopes in stellar burning processes.A multitude of reactions determine the reaction flow pattern which is described in terms of reaction network si...
Effective Field Theory and High-Precision Calculations of Nuclear Electroweak Processes
Effective Field Theory High-Precision Calculations of Nuclear Electroweak Processes
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2011/1/7
High-precision calculations of electroweak processes in light nuclei are of great importance
for multiple reasons. Gerry Brown together with Dan-Olof Riska published in 1972 a famous calculation on r...
Critical-doping universality for cuprate superconductors: Oxygen nuclear-magnetic-resonance investigation of Ca(x)La(1-x)Ba(1.75-x)La(0.25+x)Cu(3)O(y)
cuprate superconductors Oxygen nuclear-magnetic-resonance investigation
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2010/11/18
The critical doping levels in cuprates, where the ground state changes its nature (from an an-
tiferromagnet to a spin glass to superconductor to metal), are not universal. We investigate the origin ...
Coherent control of the cooperative branching ratio for nuclear x-ray pumping
Coherent control cooperative branching ratio nuclear x-ray pumping
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2010/11/11
Coherent control of nuclear pumping in a three level system driven by x-ray light is investigated. In single nuclei, the pumping performance is determined by the branching ratio of the excited state p...
Coupled-channels density-matrix approach to low-energy nuclear collision dynamics: A technique for quantifying quantum decoherence effects on reaction observables
Coupled-channels density-matrix low-energy nuclear collision dynamics reaction observables
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2010/11/11
The coupled-channels density-matrix technique for nuclear reaction dynamics, which is based on the Liouville-von Neumann equation with Lindblad dissipative terms, is developed with the inclusion of fu...
Comparison of AGN and Nuclear Starburst Activity in Seyfert 1 and 2 Galaxies over a Wide Luminosity Range Based on Near-infrared 2-4 micrometer Spectroscopy
Galaxy Astrophysics (astro-ph.GA)
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2011/1/4
We present near-infrared K- (1.9-2.5 micrometer) and L- (2.8-4.2 micrometer) band spectroscopy of 22 Seyfert nuclei. We use two methods to investigate the presence of nuclear starbursts.