positron annihilation
正电子湮没;阳电子湮没
2025-11-24 18:17 浏览次数 11
正电子湮没;阳电子湮没
optimum location of nitrogen and vanadium in the v-n-vacancy complex is determined, according to the result of the positron annihilation lifetime experiment and minimizing the total energy.
根据正电子湮没寿命实验的结果和总能量极小原理,确定了v和n在v-n-空位复合体中的最佳占据位置。
nickel, electrodeposited from twelve typical plating baths, were investigated by positron annihilation lifetime spectroscopy.
应用正电子湮没寿命谱研究了十二种典型镍镀层的结构缺陷。
a positron annihilation technique has been employed to study the microdefects of copper alloy sprayed on a steel substrate by plasma after being compressed in different thickness.
本文用正电子湮没技术对等离子体喷涂铜基合金压缩形变的微观缺陷进行了测量。
the mechanism of action of free volume holes in photographic gelatin on the electroless deposition process has been studied by positron annihilation technology (pat) in this paper.
采用正电子湮没技术(pat)研究了照相明胶中的自由体积空穴在无电沉积过程中的作用机理。
optical absorption spectra and positron annihilation radiation doppler broadening were measured at room temperature.
在室温条件下测量了吸收光谱与正电子湮没辐射多普勒展宽谱。
in this paper, annealing effects of neutron irradiated silicon singie crystal have been studied by positron annihilation lifetime measurement.
本文介绍用正电子湮没寿命测量技术研究中子辐照直拉硅的退火效应。
in preparation for the on-line analysis of positron annihilation lifetime measurement, we composed a versatile computer program (expfit) which can be run on the micro-computer (pdp11/04).
并编制了可在小型计算机(pdp-11/04)上使用的通用计算机程序(expfit)以备正电子湮没寿命测量的在线分析。在使用中已初步证明此程序是有效和方便的。
microstructure of homemade modified 316l stainless steels and its thermal annealing behavior are studied by the positron annihilation lifetime technique.
采用正电子湮没寿命方法研究了国产改进型316l不锈钢的微结构及其温度变化。
the amount of defects shows a little change, but there may be transformation between different sizes of vacancy clusters got from the results of positron annihilation spectroscope (pas).
正电子湮没寿命谱结果表明辐照后合金的缺陷没有明显的变化,但存在不同空位团之间的相互转化。
positron annihilation technique has been effectively used for study of defect particularly of open-volume defects in semiconductors.
正电子湮灭技术是一种研究半导体缺陷的有效方法,尤其是对空位型缺陷的研究。
the microscopic mechanism of irradiation damage of al film reflector is studied by the slow positron annihilation technique and x-ray diffraction.
用慢正电子湮没等分析技术研究了辐照损伤的微观机制。
by the positron annihilation life spectrum (pals) technique, the free volumes of chitosan and its n alkyl derivatives membranes were measured.
用正电子湮灭寿命谱(pals)法,研究了n-烷基化壳聚糖膜的自由体积。
in crack-bud stage the inferior process of material is described the positron annihilation average life acts as damage parameter by positron annihilation technique(pat).
利用正电子湮没技术,以正电子湮没平均寿命为损伤参量,描述裂纹萌生阶段材料的劣化过程。
the free volume and cohensional entanglement structure of samples preapared under two different thermal conditions were measured by positron annihilation life spectroscopy (pals) and dsc.
用差示扫描量热计(dsc)及正电子湮没寿命谱(pals)方法表征了两种不同物理老化条件试样的凝聚结构以及自由体积的差别。
the software and hardware construction for an on-line positron annihilation lifetime spectrometer and the prime process of setting it have been described.
本文着重介绍实现正电子湮没寿命谱仪计算机在线的软、硬件的构成及建立的主要过程。
the positron annihilation technique was applied to study the relation between relative free volume and irradiated graft for ptfe.
用正电子湮没技术研究在聚四氟乙烯辐照接枝过程中的自由体积与正电子湮没寿命谱的关系。
doppler-broadening spectra of positron annihilation radiation of al, ti, v, cr, mn, fe, co, ni, cu, zn and ga have been measured by using 2-detector coincidence technique.
采用双探头符合技术,可大幅度地降低谱线的本底,并获得正电子与原子内层电子湮没对谱线的贡献。
the saturation of positron annihilation parameters was not observed, which was a feature different from the positron studies on deformation and fatigue experiments of metals and alloys.
与形变和疲劳的研究结果不同,正电子寿命参数并未出现饱和现象。
it is shown that the positron annihilation technique is a powerful method for investigating the structure of the defects in metal.
可以看出,正电子湮没技术是研究金属微观缺陷结构的有力手段。
the measurements of positron annihilation lifetime spectrum for chlorophyll in cyclohexane (77k) and in alcohol (296k) were carried out under illumination at different light intensity.
测量了在不同光强下叶绿素环已烷溶液(77k)和酒精溶液(296k)的正电子湮没寿命谱。
it has success fully been used in one-dimentional angular correlation apparatus of positron annihilation radiati on, which was comfirme…
它成功地运用在正电子湮灭一维角关联实验装置中。