搜索结果: 16-30 共查到“知识库 中子物理学”相关记录654条 . 查询时间(4.112 秒)
本文由《磁质论》节选改编。根据《磁质论》的假设，太空中的磁质都是游离的磁光子的集合体，从星球引力的边缘向星球中心聚流，从而形成引力。则在星球中心以外各空间层次的磁质密度和速度，可依《磁质论》的推导计算。假设磁光子是组成电子，质子，中子和一切微观粒子的最基本的稳定的粒子，则由磁光子和电子的质量比以及与库仑定律的关系，就可以计推导出磁质流的密度和速度与电流的关系，使得磁质流与电流用公式表达出来，完成了...
Upper limits on the observational effects of nuclear pasta in neutron stars
relativity – gravitational waves – dense matter – stars neutron – stars
2011/7/21
The effects of the existence of exotic nuclear shapes at the bottom of the neutron star inner crust - nuclear `pasta' - on observational phenomena are estimated by comparing the limiting cases that th...
Oscillations of hot, young neutron stars: Gravitational wave frequencies and damping times
Oscillations of hot young neutron stars
2011/7/21
We study how the frequencies and damping times of oscillations of a newly born, hot proto-neutron star depend on the physical quantities which characterize the star quasi-stationary evolution which fo...
Evidence for Shape Co-existence at medium spin in 76Rb
Evidence Shape Co-existence medium spin 76Rb
2011/7/21
Four previously known rotational bands in 76Rb have been extended to moderate spins using the Gammasphere and Microball gamma ray and charged particle detector arrays and the 40Ca(40Ca,3pn) reaction a...
Neutrino Quasielastic Scattering on Nuclear Targets: Parametrizing Transverse Enhancement (Meson Exchange Currents)
Neutrino Quasielastic Nuclear Targets Parametrizing Transverse
2011/7/21
We present a parametrization of the observed enhancement in the transverse electron quasielastic (QE) response function for nucleons bound in carbon as a function of the square of the four momentum tr...
Relativistic separable interaction kernel of the neutron-proton system with inelasticities
neutron-proton system Relativistic separable interaction
2011/7/20
Within a covariant Bethe-Salpeter approach, the relativistic complex separable neutron-proton interaction kernel is proposed. The uncoupled partial-wave states with the total angular momentum $J$=0,1 ...
Testing the density matrix expansion against ab initio calculations of trapped neutron drops
density matrix neutron drops
2011/7/20
Microscopic input to a universal nuclear energy density functional can be provided through the density matrix expansion (DME), which has recently been revived and improved.
Constraining the neutron-neutron scattering length with \eftnopi
neutron-neutron scattering length
2011/7/20
We compute a model-independent correlation between the difference of neutron-neutron and proton-proton scattering lengths |a(nn)-a^C(pp)| and the splitting in binding energies between Helium-3 and tri...
Periodic Box FHNC calculations of neutron star crustal matter. (I)
Periodic Box FHNC calculations neutron star crustal matter
2011/7/20
Neutron star crustal matter, whose properties are relevant in many models aimed at explaining observed astrophysical phenomena, has so far always been studied using a mean field approach. In order to ...
Evidence of theta(13)>0 from global neutrino data analysis
global neutrino data High Energy Physics
2011/7/22
The neutrino mixing angle theta(13) is at the focus of current neutrino research. From a global analysis of the available oscillation data in a 3-neutrino framework, we previously reported [Phys. Rev....
Fast Neutron Detection with 6Li-loaded Liquid Scintillator
Fast Neutron Detection 6Li-loaded Liquid Scintillator
2011/7/21
We report on the development of a fast neutron detector using a liquid scintillator doped with enriched Li-6. The lithium was introduced in the form of an aqueous LiCl micro-emulsion with a di-isoprop...
Derivation and quantitative analysis of the differential self-interrogation Feynman-alpha method
Derivation quantitative analysis differential self-interrogation Feynman-alpha
2011/7/20
A stochastic theory for a branching process in a neutron population with two energy levels is used to assess the applicability of the differential self-interrogation Feynman-alpha method by numericall...
Neutrino-less Double Beta Decay and Particle Physics
Neutrino-less Double Beta Decay Particle Physics
2011/7/21
We review the particle physics aspects of neutrino-less double beta decay. This process can be mediated by light massive Majorana neutrinos (standard interpretation) or by something else (non-standard...
14 MeV中子在贫化铀球中造钚率的实验数据模拟分析
造钚率 贫化铀球 模拟分析
2011/8/24
根据已开展的14 MeV中子在 600 mm贫化铀球中的造钚率实验，使用MCNP5程序对实验结果及其影响因素进行数值模拟分析。结果表明：B-Ⅵ版的uresa库和endf66c库对造钚率的模拟结果与实验结果相符；管道的空腔效应、靶室结构材料和水层的屏蔽散射效应及大厅本底中子等因素对造钚率影响较小。
ADS次临界反应堆的中子共轭方程
加速器驱动的次临界系统 次临界反应堆 中子共轭方程 增殖因数
2011/8/25
与临界反应堆相比，ADS次临界反应堆的外源中子和裂变中子的空间分布具有严重的不均匀性，对应的中子价值也不同。本工作对次临界反应堆的稳态输运方程作分群扩散近似，得到了多群方程，进一步推导出按堆芯功率归一化的中子共轭方程表达式和与功率相关的中子价值函数表达式，给出了次临界反应堆中子价值的物理意义。由稳态中子共轭方程组出发，给出了两种带外加中子源的次临界反应堆增殖因数的表达式。