Results 71 to 80 of about 227,231 (227)

Two-Group Neutron Transport Theory with Anisotropic Scattering

Zeitschrift für Naturforschung A, 1970
Abstract Two-group transport theory with anisotropic scattering in infinite homogeneous media is pre-sented in this paper. The kernel of the integral equation is expanded into a finite series of Legendre polynomials. Eigenfunctions and eigenvalues of the transformed integral equation are found and the number of discrete eigenvalues is ...
Thielheim, K. O., Claussen, K.
openaire   +2 more sources

Development and Validation of 3D Core Physics Code STORK Based on GPU Acceleration

Yuanzineng kexue jishu
A 3D neutron transport computational code, STORK, has been developed based on a small-scale multi-GPU computing platform, utilizing the coupled approach of the two-dimensional full-core layer-by-layer transport calculation by the method of ...
YU Lulin1, YANG Gaosheng2, CHEN Guohua1, BEI Hua2, JIANG Xiaofeng1, GAO Mingmin2, WANG Tao1
doaj   +1 more source

Quantized Ultracold Neutrons in Rough Waveguides: GRANIT Experiments and Beyond

Advances in High Energy Physics, 2014
We apply our general theory of transport in systems with random rough boundaries to gravitationally quantized ultracold neutrons in rough waveguides as in GRANIT experiments (ILL, Grenoble).
M. Escobar, A. E. Meyerovich
doaj   +1 more source

Phonon density of states and heat capacity of La_(3−x)Te_4 [PDF]

, 2009
The phonon density of states (DOS) of La_(3−x)Te_4 compounds (x=0.0,0.18,0.32) was measured at 300, 520, and 780 K, using inelastic neutron scattering.
Abernathy, D. L., Delaire, O., Firdosy, S. A., Lucas, M. S., May, A. F., McGuire, M. A., Porter, W. D., Ravi, V. A., Snyder, G. J., Stone, M. B.   +9 more
core  

Deterministic Calculation Method for Continuous-energy Neutron Transport Equation in No-resonance Energy-range

Yuanzineng kexue jishu
In analyzing the power density distribution within the core of a nuclear reactor, it is necessary to employ numerical methods to solve the neutron transport equation and obtain the neutron flux density distribution.
LIU Haopo, LI Yunzhao, WU Hongchun, CAO Liangzhi
doaj   +1 more source

Complex Eigenvalues Analysis of the SN equations for deterministic coarse-mesh methods development applied in one-dimensional neutron shielding calculation

Vetor
When using spectral nodal methods in the solution of fixed-source problems, one of the steps involves obtaining the intranodal homogeneous solution of the neutron transport equations in the discrete ordinates formulation (SN), where an eigenvalue problem
Rafael Barbosa Libotte, Hermes Alves Filho, Fernando Carvalho da Silva   +2 more
doaj   +1 more source

Some New Properties in Fredholm Theory, Schechter Essential Spectrum, and Application to Transport Theory

Journal of Inequalities and Applications, 2008
The theory of measures of noncompactness has many applications on topology, functional analysis, and operator theory. In this paper, we consider one axiomatic approach to this notion which includes the most important classical definitions.
Dehici Abdelkader, Abdelmoumen Boulbeba, Jeribi Aref, Mnif Maher   +3 more
doaj  

Uncertainty analysis method and application of neutron multi-sphere spectrometer measurement based on Monte Carlo method

He jishu
BackgroundMultisphere neutron spectrometers are pivotal in accurately measuring neutron flux across various fields. The inherent complexities and non-linearities in their calculation processes, such as correlated variables, make traditional uncertainty ...
ZHANG Dake, TANG Zhihui, WEI Yingjing, LI Taosheng, CAO Qinjian, SUN Bowen   +5 more
doaj   +1 more source

Issues on beam-plasma instability: early simulations focusing on the development of a compact neutron generator

Revista Brasileira de Ensino de Física
The first issue on compact neutron generator design is the definition of the plasma generation process following the analysis of the physical plasma state. The plasma features and the nuclear reactions of fusion involved in the operation of the generator,
Wagner Leite Araujo, Tarcisio Passos Ribeiro de Campos   +1 more
doaj   +1 more source

Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites

Advanced Science
Conduction of protons in solids is a cooperative process propelled by phonons, with molecular details obscured by the irregular movements in the thermal bath.
Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Stephen P. Cramer, Qianli Chen, Artur Braun   +8 more
doaj   +1 more source