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Magnetic properties with 3 different sizes of Ni nanochains, synthesized by a technique of wet chemical solution, have been investigated experimentally. The sample sizes are 50 nm, 75 nm, and 150 nm with a typical length of a few microns.…

介观与纳米尺度物理 · 物理学 2007-05-23 Wangzhi Zheng , Lin He , Chinping Chen , Lin He , Wei Zhou , Chenmin Liu , Lin Guo , Huibin Xu

Standard models of ion channel voltage gating require substantial movement of one transmembrane segment, S4, of the voltage sensing domain. Evidence comes from the accessibility to external methanethiosulfonate (MTS) reagents of the…

生物大分子 · 定量生物学 2013-09-06 Alisher M. Kariev , Michael E. Green

Using modern methods of reactor physics we have performed full-scale calculations of the natural reactor Oklo. For reliability we have used recent version of two Monte Carlo codes: Russian code MCU REA and world wide known code MCNP (USA).…

高能物理 - 唯象学 · 物理学 2013-05-29 Yu. V. Petrov , A. I. Nazarov , M. S. Onegin , V. Yu. Petrov , E. G. Sakhnovsky

Fluoride salts demonstrate significant potential for applications in next-generation nuclear reactors, necessitating a comprehensive understanding of their thermophysical properties for technological advancements. Experimental measurement…

材料科学 · 物理学 2024-02-29 Rybin Nikita , Dmitrii Maksimov , Yuriy Zaikov , Alexander Shapeev

Density and temperature conditions in the solar core suggest that the microscopic diffusion of electrons and ions could be nonstandard: Diffusion and friction coefficients are energy dependent, collisions are not two-body processes and…

天体物理学 · 物理学 2015-06-24 G. Kaniadakis , A. Lavagno , M. Lissia , P. Quarati

Magnetometry and neutron scattering have been used to study the magnetic properties of pressure graded Co/Pd multilayers. The grading of the multilayer structure was done by varying the deposition pressure during sputtering of the samples.…

材料科学 · 物理学 2009-11-13 B. J. Kirby , S. M. Watson , J. E. Davies , G. T. Zimanyi , Kai Liu , R. D. Shull , J. A. Borchers

This study presents a comprehensive computational investigation of magnetite nanoparticles, systematically evaluating a range of force fields against experimental results. We analyze the influence of particle size, temperature, and…

Organic charge transfer salts show a variety of complex phases ranging from antiferromagnetic long-range order, spin liquid, bad metal or even superconductivity. A powerful method to investigate magnetism is spin-polarized inelastic neutron…

材料科学 · 物理学 2014-07-29 Francesc Salvat-Pujol , Harald O. Jeschke , Roser Valenti

Molecular dynamics simulations were used to explain the origin and properties of electrical double-layer capacitance in short graphene nanochannels with width below 2 nm. The results explain the previously reported experimental result on…

化学物理 · 物理学 2017-04-06 Yinghua Qiu , Yunfei Chen

Weinstein, et. al [1] [PRL 106, 052301 (2011)] and Hen, et. al [2] [PRC 85, 047301 (2012)] observed a correlation between the EMC effect and the amount of short range correlated (SRC) pairs in nuclei which implies that quark distributions…

Parametrizing energy functions for ionic systems can be challenging. Here, the total energy function for an eutectic system consisting of water, SCN$^-$, K$^+$ and acetamide is improved vis-a-vis experimentally measured properties. Given…

化学物理 · 物理学 2024-10-25 Kai Töpfer , Eric Boittier , Michael Devereux , Andrea Pasti , Peter Hamm , Markus Meuwly

The small energy exchange via nucleon recoils in neutrino-nucleon scattering is now supposed to be one of the important factors for successful explosion of core-collapse supernovae (CCSNe) as they can change neutrino spectra through…

高能天体物理现象 · 物理学 2020-07-08 Chinami Kato , Hiroki Nagakura , Yusuke Hori , Shoichi Yamada

We have constructed an approximate microscopic model for the neutron dynamic structure factor of solid methane in phase II. We expect our model to apply for neutron energies below 1\textit{eV} at pressures near 1 bar and temperatures below…

原子物理 · 物理学 2008-08-21 Yunchang Shin , W. Mike Snow , Chen-yu Liu , Christopher M. Lavelle , David V. Baxter

Electron scattering is an effective method to study the nuclear structure. For the odd-$A$ nuclei with proton holes in the outmost orbits, we investigate the contributions of proton holes to the nuclear quadrupole moments $Q$ and magnetic…

核理论 · 物理学 2016-03-23 Jian Liu , Xin Zhang , Chang Xu , Zhongzhou Ren

Despite being neutral particles, neutrinos can have a non-zero charge radius, which represents the only non-null neutrino electromagnetic property in the standard model theory. Its value can be predicted with high accuracy and its effect is…

高能物理 - 唯象学 · 物理学 2024-05-31 M. Atzori Corona , M. Cadeddu , N. Cargioli , F. Dordei , C. Giunti

In metallic nanoparticles, the different electronic environment seen by each magnetic nucleus produces a distribution of Knight shifts of the NMR frequencies which is observed as an inhomogeneously broadened lineshape. We study the…

介观与纳米尺度物理 · 物理学 2009-10-30 Horacio M. Pastawski , Jose Gascon

The structure of the molten salt (LiF)$_{0.465}$(NaF)$_{0.115}$(KF)$_{0.42}$ (FLiNaK), a potential coolant for molten salt nuclear reactors, has been studied by ab initio molecular dynamics simulations and neutron total scattering…

An elegant formula for coordinates of carbon atoms in a unit cell of a single-walled nanotube (SWNT) is presented and a new molecular motor of double-walled carbon nanotube whose inner tube is a long (8,4) SWNT and outer tube a short (14,8)…

介观与纳米尺度物理 · 物理学 2009-09-29 Z. C. Tu , Z. C. Ou-Yang

The neutron is electrically neutral, but its substructure consists of charged quarks so it may have an internal charge distribution. In fact it is known to have a negative mean square charge radius (MSCR), the second moment of the radial…

核实验 · 物理学 2009-11-11 F. E. Wietfeldt , M. Huber , T. C. Black , H. Kaiser , M. Arif , D. L. Jacobson , S. A. Werner

The stability of the stored information in recording media depends on the anisotropy energy Ea = KeffV of nanoparticles (NPs) of volume V or diameter D. Therefore, the knowledge of how the effective magnetic anisotropy Keff varies with D…

材料科学 · 物理学 2017-10-24 Sobhit Singh , M. S. Seehra