High-spin states of Kr-77 are studied via the fusion-evaporation reaction Zn-68(O-16, 2p5n)Kr-77 with the beam energy of 80 MeV provided by the Tandem accelerator at Japan Atomic Energy Agency (JAEA). The intensity of the beam is I similar to 1 pnA. In the present work, some new gamma transitions are found to constitute the new band of the proposed level scheme. It is very similar to the M1 transition from the level energy, so it is proposed that this band is the M1 band.

---------------------------------------------------------------------------------------------------------------------------------ABSTRACT The epitaxial La 0.7 Sr 0.3 MnO 3 thin films was prepared by sol-gel method on LaAlO 3 (100) single crystal. The orientation of the films at different annealing temperatures is studied: with the increase of temperature, the orientation of the films becomes better.

国内许多高校都开设有信息光学课程,实验教学在课程教学中具有重要的作用.虚拟仿真实验由于具有良好的互动性和直观生动的优点,在实验教学活动中得到了越来越广泛的应用.我们在本文中对信息光学实验教学中可以开展的若干虚拟仿真实验进行一些讨论.

A new three parameter formula is proposed for ground-state bands in even-even soft rotors or called transitional nuclei. The new formula blends those of very soft nuclei and well deformed nuclei. Especially, it is found in fact that the formula proposed by P. von Brentano et al. can be derived from our formula if some approximations are adopted and it can be explained why in their work the energy-dependent term beta*E can be dropped. Compared to their formula it can be resulted in that the range of validity of our formula will be much broader than theirs.

The [Formula: see text]-axis oriented Ca3Co4O9 (CCO) films without and with 5 wt.% Ag addition were prepared by chemical solution deposition (CSD) through multiple annealing processing on single crystal LaAlO3 (001) substrates. With Ag addition, the resistivity at 300 K is decreased to 2.25 m[Formula: see text]cm, the Seebeck coefficient at 300 K is enhanced to 106 [Formula: see text]V/K and the power factor at 300 K can reach as high as 0.5 mW[Formula: see text]K[Formula: see text]m[Formula: see text], which is the highest value among CCO films prepared by CSD. The results suggest that Ag addition is a very effective route to improve the thermoelectric properties of CCO films through multiple annealing processing.

结合多年数字电路实验教学的经验,认识到Multisim软件在教学中的优势,举例说明Muldsim在数字电路实验教学中的辅助作用,以提高教学效率.

After the experimental data of reaction cross section about 58Ni were collected through extensive col?lection, careful analysis and reasonable evaluation, this article presents the evaluation of experimental data and the covariance matrix under 20MeV. What we did provides the basis for the data of cross section values and cova?riance matrix of high reliability of 58Ni(n, 2n), which is the final recommendation.

Epitaxial La0.85Na0.15Mn1-xNixO3 (0 <= x <= 0.2) thin films are fabricated successfully on LaAlO3 (LAO) (100) substrates using chemical solution deposition method. The results reveal that with the increase of the Ni-doping content, the X-ray diffraction intensity ratio of /((111))//((200)) increases, whereas both the grain size and the roughness decrease. The magnetic and transport measurements show that it is effective to tune the MR effects via Ni doping at Mn-sites.

Static electricity is one of the reasons for gas explosions in coal mines. When miners leave the narrow tunnel exit of a coal mine, the body voltage may increase by more than ten times with the body capacitance decreasing quickly to 1/10 of its original value, and the body electrostatic discharge (ESD) energy can increase greatly to become a dangerous gas ignition source. In this work, simulation research of human body ESD detonating the gas in a coal mine was conducted. Based on the analysis of the human body electrostatic leakage rules, it is found that electrostatic half-life is mainly relative to the medium resistivity. Therefore it is important to establish a standard for anti-static attire. A series of gas explosion experiments were also conducted by the simulation system, and the results showed that the gas in coal mines might be detonated when the human body capacitance was in the range of 100-1800 pF and the discharge gap between 0.3-1.2 mm. Moreover, gas concentration at approximately 8.5% was most likely to induce an explosion.

结合笔者多年来原子物理学的教学实践,对原子物理学教学改革中应该注意的一些问题提出了粗浅的看法。

With carbon nanotube as cold cathode, the field emission display based on the improved film-electrode was fabricated. The indium tin oxide film covered on the glass surface was etched to form the film-electrode. For one film-electrode stripe, the left bar electrode and the right bar electrode were formed on the both side of the bottom electrode. The carbon nanotube would be prepared on the bottom electrode surface. The cathode covering layer fabricated with the sintered insulation slurry would cover the left and right bar electrodes. It was confirmed that the emission current could be controlled by the formed electric-field with the improved film-electrode.

Human body capacitance of miners decrease quickly to one tenth, body moving voltage increase up to a dozen at narrow exit in coal mine environment, which is a source easy to detonate the gas. The electrostatic half-life is relative with the material resistivity by study electrostatic leakage rules of human body. After a series of experiments of exploding the gas by human body electrostatic discharge simulation, the relationship between different human body capacitance, discharge gap and the gas concentration with exploding are obtained.

In order to study the deformation of the nuclei which belongs to the transitional region between strongly deformed and spherical nuclei, the calculations of the total Routhian surfaces by means of the pairing-deformation-frequency self-consistent cranked shell model were carried out in order to investigate shape evolution in even-mass Os and Pt isotopes (176–202 Os and 182–204 Pt ) starting from the static nuclear ground states. It is found that some nuclear ground states such as in 196 Os and 188–194 Pt are neither oblate nor prolate. Instead, the ground-state minima in these nuclei are axially asymmetric in shape. In addition, a complementary approach is used to extract equilibrium γ0 value (nonaxially symmetric equilibrium shape parameter), which support our predictions.

Epitaxial La0.7Sr0.3MnO3(LSMO) thin films are fabricated by chemical solution deposition(CSD) method on LaAlO3(100) single crystal substrates.The epitaxy of the films is investigated at different annealed temperature.It shows the epitaxy is better at higher temperature than lower.

The γ-ray spectra of 188 Re decay have been studied by using a Compton-suppressed spectrometer and a three parameters γ-γ- T list coincidence system. Experimental data analysis demonstrated that six γ-rays at 557, 810, 1463, 1867, 1936 and 2022 keV and three levels at 1443, 1936 and 2022 keV are confirmed again. Seven new γ-rays at 309.60±0.04, 826.90±0.02, 979.29±0.08, 1103.7±0.4, 1828.2±0.1, 1842.5±0.2 and 1982.5±0.2 keV have been identified, three new levels at 309.60, 1828.2 and 1982.5 keV are assigned. The β- decay branching ratio is deduced. In addition, in order to study this γ-unstable nucleus, shape calculations using the Hartree–Fock–Bogoliubov-like formalism were carried out for positive-parity states in 188 Os . The TRS plots reveal that, as the spin increases up the band, the triaxiality parameter γ changes.

The relation between the conductivity and microstructure in normal rubber and the antistatic composites modified by CB are studied by positron annihilation lifetime spectrum(PALS). Result shows that interlayers will be formed in the composites, it is attributed to the interaction between the nano-CB and rubber chains and is related to the conductivity of composites. At the same time the size of the free volume hole in composites will be decreased. It shows that some small free volume holes will be formed in the composites.

本文讨论了超重核288114的超形变带的相关性质,发现了288114核的四极形变、γ形变、运动学转动惯量、动力学转动惯量、均方根半径以及转动能量随核总自旋的变化关系,为实验上研究超重核提供理论参考。

Carbon nanotubes can be considered as nanotubes rolled up from hexagon lattice of graphite sheet along a special direction, which is depicted by a quantity called chirality. Various chiral nanotubes such as armchair type or zigzag type show different electric properties. In this paper, we have calculated the electric properties and electron transport properties of carbon nanotubes with different chirality using tight binding method. Our calculation showed that these properties are sensitive to chirality, carbon nanotubes can behave as insulator or narrow energy semiconductor or semimetal depend on their chirality.

Common materials in coal mine are in the harsh environment of gas. For the sake of safety, a better antistatic and fire protection material properties is demanded. A certain amount of antistatic materials and fire protection material has to be filled in order to improve the antistatic properties especially the fireproof functions. And using the normal filling method will inevitablely reduce the mechanical performance. This paper discusses the influence of the crosslinking agent on nano-filler particle size and the structure of the polymer, the influence of the filler particle size and the ratio of different components on the conductivity of composite materials and the tensile strength, impact strength and ductility of materials. The influence of mastication temperature and time on the PTC effect is studied. The mechanism of the volume effect and surface effect and improving the tribology and mechanical properties is also studied.

By analyzing the macro electrical properties and the microscopic structure from SEM of nanomaterials modified mine transmission belt samples. The influences of the filling process of inorganic nano particle-filled rubber and PVC polymer on the physical properties of coal transmission belt is reviewed, as well as PTC and NTC effect on the stability of the physical properties and stability of materials. Influence of nano-materials and polymer materials for rubber and temperature changes in the plastic filled refining process. Crosslinker and major filler changes in the amount and filled plastic chain time on the conductivity of coal conveyer belt is studied. Influence of cure temperature. Cure time on the mechanical performance is studied. The microscopic mechanism of macro conductivity change of conveyer belt is discussed.