搜索结果: 1-12 共查到“原子核物理学 Field”相关记录12条 . 查询时间(0.143 秒)
Study of the neutron skin thickness of ${}^{208}$Pb in mean field models
mean field models
2011/7/20
We study whether the neutron skin thickness $\Delta r_{np}$ of ${}^{208}$Pb originates from the bulk or from the surface of the neutron and proton density distributions in mean field models.
Nuclear collision in strong magnetic field
Nuclear collision strong magnetic field isospin physics
2011/7/20
We studied nucleus-nucleus collision in strong magnetic field based on a transport model. It is found that neutrons and protons can be separated from a nucleus by strong magnetic field and neutron-ric...
The two-nucleon electromagnetic charge operator in chiral effective field theory ($χ$EFT) up to one loop
electromagnetic charge operator
2011/7/20
The electromagnetic charge operator in a two-nucleon system is derived in chiral effective field theory ($\chi$EFT) up to order $e\, Q$ (or N4LO), where $Q$ denotes the low-momentum scale and $e$ is t...
Static and Dynamic Chain Structures in the Mean-Field Theory
Mean-Field Theory Static and Dynamic Chain Structures
2011/7/20
We give a brief overview of recent work examining the presence of $\alpha$-clusters in light nuclei within the Skyrme-force Hartree-Fock model. Of special significance are investigations into $\alpha$...
Near-zero-field nuclear magnetic resonance
Near-zero-field nuclear magnetic resonance Atomic Physics
2011/8/3
Abstract: We investigate nuclear magnetic resonance (NMR) in near-zero-field, where the Zeeman interaction can be treated as a perturbation to the electron mediated scalar interaction (J-coupling). Th...
Effective Field Theory and High-Precision Calculations of Nuclear Electroweak Processes
Effective Field Theory High-Precision Calculations Nuclear Electroweak Processes
2010/12/29
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 ra...
Scalar field in nuclear matter: the roles of spontaneous chiral symmetry breaking and nucleon structure
nuclear matter roles of spontaneous chiral symmetry breaking nucleon structure
2011/1/6
Chiral theories with spontaneous symmetry breaking such as the Nambu-Jona-Lasinio (NJL)
model lead to the existence of a scalar mode. We present in a detailed manner how the corresponding low momentu...
Shell evolution at N=20 in the constrained relativistic mean field approach
shell quenching N=20 relativistic mean field theory nuclear deformation
2009/8/14
The shell evolution at N=20, a disappearing neutron magic number observed experimentally in very neutron-rich nuclides, is investigated in the constrained relativistic mean field (RMF) theory. The tr...
Proposal for measuring the quantum states of neutrons in the gravitational field with a CCD-based pixel sensor
neutron quantumstate gravitational field CCD
2010/4/12
An experimental setup is proposed for the precise measurement of the quantum states of ultracold neutrons bound in the earth's gravitational field. The experiment utilizes a CCD-based pixel sensor and...
Edge states in graphene quantum dots: Fractional quantum Hall effect analogies and differences at zero magnetic field
Edge states graphene quantum dots Fractional quantum Hall zero magnetic field
2010/4/13
We investigate the way that the degenerate manifold of midgap edge states in quasicircular graphene quantum dots with zig-zag boundaries supports, under free-magnetic-field conditions, strongly correl...
The Coester Line in Relativistic Mean Field Nuclear Matter
The Coester Line Relativistic Mean Field Nuclear Matter
2010/10/13
The Walecka model contains essentially two parameters that are associated with the Lorentz scalar (S) and vector (V ) interactions. These parameters are related to a two-body interaction consisting of...
Field and Polarization Effects Arising in Neutrino-Lepton Processes in a Magnetic Field
Polarization Effects Magnetic Field Neutrino-Lepton Processes
2010/4/15
We discuss the effects arising in the neutrino-lepton processes (nm+e- \rightarrow ne+m- and \overline{n}e+e-\rightarrow\overline{n}m+m-) in a constant uniform magnetic field in the framework of the W...