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英国Assignment代写:中子闪烁体为基础的研究方法

本文认为,目前的中子成像技术是以中子闪烁体为基础,并以锂掺杂Zns为指示物的。本文进一步指出,对于0.3 mm的闪烁体典型厚度,空间分辨率为250mm的热中子探测效率为20%。这篇文章暗示空间分辨率被确定为调制传递函数的10%。这种近似被认为是瑞利准则。本文通过对不同粘结剂材料和空间分辨率的检测,提出了在闪烁体内部提高空间分辨率的新方法。m根据报告(Hussey et al., 2007)。这已经被识别,同时也意味着更薄的闪烁体的需要降低了检测的效率。

英国Assignment代写:中子闪烁体为基础的研究方法

然而,即使使用高分辨率的闪烁体,也不可能对质子交换膜燃料电池内部的水分布进行成像。通过识别光晕,得到了有限的分辨率。这种光晕是闪烁体内部的光散射,它随闪烁体的厚度而变化。本文的研究方法包括实验方法。该方法是为了通过实验直接获取原始数据而采用的。实验的设计考虑到通过中子束线的实验设置产生几何模糊。这低于探测器的空间分辨率(Hussey et al., 2007)。针孔光学在中子射线照相中定义图像的形成。计算λg针孔内光学的中子源缩小成像物体平面点使用相似三角形的性质。

英国Assignment代写:中子闪烁体为基础的研究方法

This article suggests that the present neutron imaging has its basis on the scintillators of neutron with the indication to Li-doped Zns . The article further asserts that there is 20 percent of the efficiency in thermal neutron detection with the spatial resolution of the 250 u.m. for the typical thickness of scintillator at 0.3 mm. The article implies that the spatial resolution is identified to be 10 per cent of the modulation transfer function. This approximation is considered to be the criterion of Rayleigh. This article suggests that the works have been conducted recently for the spatial resolution enhancement within the scintillators through the examination of the varied materials of binder and spatial resolution to reach 50 u.m as per the reports (Hussey et al., 2007). This has been identified along with the implication that the thinner scintillator’s need reduced the efficiency of the detection.

英国Assignment代写:中子闪烁体为基础的研究方法

However, it is indicated that even with the scintillator of high resolution, imaging the water distribution through-place within the PEMFC is not possible. The light blooming is identified to result in the limited resolution. This light blooming is the scintillation’s light scattering within the scintillator that scales with the thickness of the scintillator. The research method of this article consists of the experimentation approach. This approach has been used in order to obtain the data of primary nature directly through the experimentation. The design of the experiment comprised of consideration that a geometric blur is yielded through the experimental setup on the beam line of neutron. This is lower than the spatial resolution of the detector (Hussey et al., 2007). The pinhole optics define the formation of the image within the neutron radiography. The λg is calculated within the pinhole optics as the neutron source minified imaged by the object plane point with the use of the triangles of similar nature.