THE ANOMALOUS MAGNETIC MOMENT OF NUCLEONS

The nucleon magnetic moments and the neutron-electron interaction potential have been calculated using the theory of pseudo-scalar mesons with pseudo-vector coupling. The divergence in the neutron-electron interaction is removed after the vacuum polarization effect due to virtual mesons has been taken into account. The final result is the same as in the case of pseudo-scalar coupling.</jats:p

SYMMETRY GROUP AND HARMONIC POTENTIALS OF A MAGNETOSTATIC MULT1POLE

In this paper, a magnetostaric multipole with a control vector is studied. The relation between the symmetry transformation of this multipole and that of its M-tunction is derived. A rigorous, general and simple method for deriving the constraints of the symmetry group of this multipole on its harmonic potentials has beenset up.</jats:p

ON THE THEORY OF SURFACE SUPERFLUIDITY IN 4He-3He MIXTURE FILMS

In this paper, a theoretical model describing the surface superfluidity in 4He-3He mixture films is proposed to obtain an expression for the potential energy of vortex pairs in the presence of 3He. The static recursion relations as well as the dynamical delectric function are then derived using this form of potential energy. The period shift 2△P/P and the dissipation Q-1 for the torsional oscillator near TC are calculated theoretically and compared with the experimental results of McQueeney et al.</jats:p

THE FORMATION OF σ-PHASE IN A MODIFIED 18/8 STAINLESS STEEL

The formation of σ-phase in a 18% Cr 11% Ni 2.6% Mo 0.8% Ti stainless steel has been investigated. Microscopic and X-ray examinations showed that the formationσf σ-phase from δ-ferrite was accompanied by the formation of austenite, the reaction being most rapid at 850℃The formation of a caused a marked decrease in Izod value and a slight increase in hardness. The σ-phase and its detrimental effects can be removed by a re-solution treatment at 1100℃.</jats:p

Sensing and slow light properties of dual-band terahertz metamaterials based on electromagnetically induced transparency-like

&lt;sec&gt;Electromagnetically induced transparency (EIT) is a quantum interference phenomenon in a three-level atomic system. The generation of quantum interference effect significantly reduces the light absorptivity of the specific frequency that is strongly absorbed, and produces a sharp “transmission window” in the resonance absorption region. The EIT is usually accompanied by strong dispersion, which significantly reduces the group velocity of light and enhances the nonlinear interaction. The EIT phenomenon of atomic system usually needs to be observed at very low temperature or high intensity laser, which is a very serious challenge for the application of EIT technology. The simulation of electromagnetically induced transparency using metamaterials can effectively break through these limitations.&lt;/sec&gt;&lt;sec&gt;In this work, an electromagnetically induced transparency-like terahertz metamaterial structure with three bright modes is proposed and investigated. Two weakly hybrid states are composed of two bright modes with similar resonant frequencies. The energy oscillates back and forth between the two modes, and a transparent window is generated between the two resonance points. The designed metamaterial is composed of three groups of bright modes with adjacent resonant frequencies, and the three groups of bright modes are coupled to produce two transparent windows. The electromagnetically induced transparency-like formation mechanism is analyzed based on the simulation curve and electric field distribution. In addition, the sensing properties of metamaterial are determined by simulation and calculation, and the refractive index sensitivities of the two windows can be as high as 451.92 GHz/RIU and 545.31 GHz/RIU under the optimal thickness of the measured substances. Through the sensing simulation of six petroleum products, it is verified that the dual-band has more excellent advantages in dielectric constant matching than the single frequency band. The characteristics of the designed metamaterial in the slow light effect are also studied. The maximum group delay times of the two windows can reach 9.98 ps and 6.23 ps. Therefore, the structure is considered to have an important application value in the field of high sensitivity sensors and slow light devices.&lt;/sec&gt;</jats:p

36. Commission de la Spectrophotométrie

At the first meeting of the newly formed Commission on Spectrophotometry, at Paris in 1935, a thorough discussion, aided by several reports, took place on the principles of this branch of astrophysics. So it will be sufficient now to treat only such special points of theory and practice as have won interest by researches of the last few years.</jats:p

12. Commission de la Radiation Solaire et de la Spectroscopic Solaire

The Commission has suffered the heavy loss of Prof. W. Bernheimer, who was co-opted on to our Commission and whose work is well known and appreciated.The following report touches the subjects of interest to this Commission as treated by the various members and is not an account more or less complete of the work done in them in the three years.</jats:p