查询词典 spin

Spin-orbit coupling is the interaction between the spin magnetic moment of an electron and magnetic field generated by its orbital motion.

自旋-轨道耦合是电子的自旋磁矩和由轨道运动产生的磁场之间的相互作用。

III Investigations of ferromagnetic alloy films by XMCD1. By using XMCD and SQUID magnetometry, the spin and orbital moments of Fe and Co in the Co_(0.9)Fe_(0.1)(50nm) are studied. Compared with single-element film, the spin moment of Co remains constant while that of Fe reduced from 1.98 to 1.63μB. The contributions of different elements in the film is, m_ : m_ - 10.5 : 89.5. The average magnetic moment (1.90μB) determined by XMCD is in agreement with that (1.82μB) obtained from SQUID measurements. Utilizing XMCD spectra in-plane element-dependent magnetic anisotropy in Co_(0.9)Fe_(0.1) films has been investigated. Apart from known field-induced easy axis during film growth, a soft axis perpendicular to it was observed, and hard axes are 66° away from the easy axis.

利用XMCD谱研究了50nm Co_(0.9)Fe_(0.1)薄膜，结果发现：样品中Fe、Co元素对磁化强度的贡献比为10.5∶89.5；由XMCD获得的合金平均原子磁矩1.90μ_B与用SQUID磁强计得到的合金平均原子磁矩1.82μ_B基本相符；对Co_(0.9)Fe_(0.1)薄膜面内元素分辨的磁各向异性的研究发现，除了在生长的磁诱导方向存在易磁化轴外，与该轴垂直的方向还存在一个类似易轴的软磁化轴；面内的两个难磁化轴与易磁化轴取向大约成66°夹角，构成面内双轴磁各向异性，并根据XMCD结果对面内双轴形成的原因进行了分(来源：Ad2BC82论文网www.abclunwen.com)析。2。

Through studying the dynamical and quantum fluctuation properties of the spin waves, in analogy with the modulation of quantum noise in light and lattice waves, and lattice waves, we calculate out the average value of spin fluctuation and get the condition of achieving the magnon squeezing states.

通过研究自旋波的动力学和量子涨落的性质，类似于光波和格波的量子噪声的调制，计算出自旋涨落的平均值，从而得到了产生磁了振子压缩态的条件。

Our purpose is to try to understand some long-standingproblems in light baryon which include (1) The energy level or-der between the positive- and negative- parity partner states,in particular, Roper resonance puzzle;(2)The baryon spin-orbitstructure puzzle-the absence of spin-orbit effects in baryon spec-trum;(3)The calculated amplitudes of nucleon form factors droptoo fast and the uncertainty of the multipole strength in thetransition process of rN →△.

我们的目的是试图解决以往组分夸克模型在轻重子系统的研究中存在的几个问题：(1)重子谱中正负宇称配对态的能级次序，特别是Roper共振之谜；(2)重子谱中自旋轨道看不见之谜；(3)核子形状因子随转移动量增大而下降过快及核子到其共振态光和电生过程中多极子强度和形状因子的不确定性。

And the spin-orbital structure of nucleon would shed light on the nucleon spin problem.

而核子磁矩的自旋-轨道结构也对核子磁矩的问题有着重要的启不。

Planck constant and spin quantum number are calculated by the spacing of the twin line.These have high precision compared with theory value. sodium atomic spectra ; fine structure constant α; spin quantum number s

文献[2]用双光栅单色仪取代平面光栅摄谱仪研究钠原子光谱，能明显观察到谱线双重结构不同成分间的强度比

1 Pan Pearl River Delta Physics Olympiad 2009 2009 年泛珠三角及中华名校物理竞赛 Q2 Spin Torque (16 points)题 2 自旋力矩(16 分) An electron has permanent angular momentum called spin that is fixed in amplitude h / 4π, where h is the Planck Constant, while its direction can be changed by external interactions.

电子具有固有的角动量 S ，叫做自旋，其方向可在与外界的相互作用下改变，其大小为固定的 h / 4π，其中 h 为普朗克常数。一导线载有电流 I，导线的下半部分由磁化了的导体组成，上半部分由非磁性导体组成。

A spin polarizer is a device that allows atoms of only one definite spin orientation to pass through it.

自旋偏振器是这样一种装置，它只允许具有某一确定自旋取向的原子通过。

Spin-orbit interaction arising from in-plane potential gradient can contribute to significant spin accumulation around a microstructure.

最重要的发现是，以往一直被忽略的，由电位梯度产生的自旋轨道耦合可以使一个微结构附近造成可观的电子自旋堆积。

A major finding in this thesis is that the mostly overlooked spin-orbit interaction arising from in-plane potential gradient can contribute to significant spin accumulation around a microstructure.

最重要的发现是，以往一直被忽略的，由电位梯度产生的自旋轨道耦合可以使一个微结构附近造成可观的电子自旋堆积。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。