Several important experiments to study neutrino oscillation in the beginning of the 21st century , such as long - base - line neurino oscillation , the idea to build a muon storage ring for producing a high energy electron neutrino beam to carry out neutrino oscillation experiment and to measure the cp violation in neutrino oscillation , are also introduced 本文还介绍了21世纪初研究中微子振荡的若干重要实验，例如长基线中微子振荡实验以及建造子贮存环来产生高能电子中微子束进行中微子振荡的实验以及测量中微子振荡时的cp破坏的设想。
Based on laser molecular beam epitaxy , the strain behavior and the corresponding control technology in oxides heteroepitaxial system , especially in ferroelectric thin films with perovskite structure , was systematically studied by using in situ reflected - high - energy - electron - diffraction ( rheed ) . some original and meaningful results were obtained . following aspects were included in this dissertation : the structure of thin films is analyzed by rheed 本论文基于激光分子束外延的基本原理,以高能电子反射为主要监测工具,对氧化物薄膜特别是铁电氧化物薄膜异质外延过程中应变行为及其控制方法进行了系统的研究,并取得了一系列有意义的结果,主要包括以下内容:利用反射高能电子衍射( rheed )的信息对薄膜结构进行分析。
Furthermore , the growth and the study of self - organized quantum dots structures become more and more important recently , and the application of self - organization technique become wider and wider in this thesis , we address the theory of film growth and the growth technique firstly more , the ways and characteristics of surface detection are prescribed we mainly report the growth process , results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd , in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures , including the substrate cleaning , nitridation , the growth of buffer and the growth of gan and ain epilayer , is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover , we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature , we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 ) 本论文主要论述了在espd - u装置上，采用电子回旋共振等离子体增强mocvd ( ecr - pamocvd )方法，在蓝宝石衬底上通过s - k模式自组装生长gan aln量子点结构的生长工艺、结果及讨论。而重点分析了自组装生长量子点之前的aln外延层生长工艺，包括衬底清洗、氮化、缓冲层的生长和gan 、 aln外延层的生长；通过高能电子衍射、 x射线衍射和原子力显微镜测试，并且对这些测试结果进行了详细的比较研究，得出了较优化的工艺条件，生长出了晶质较好、表面较平整的aln外延层；进而采用s - k模式自组装生长了gan aln量子点结构。由于实验装置加热炉温度的限制，我们没有能够生长出原子级平滑的aln外延层表面，因而没能够生长出密度比较大和直径比较小的量子点。
The epitaxial growths of ingaas / gaas / algaas fundamental material and the fabrication of 45 - deflector are extensively studied in our work . some measuring methods are used to evaluate the growth quality of our grown structure by pl , cv , x - ray double crystal diffraction , sem etc . . property analysis are provided for it 利用高能电子衍射、电化学c - v 、扫描电镜( sem ) 、 x射线双晶衍射仪、光荧光谱仪( pl ) 、原子力显微镜等多种方法对制备的器件进行了检测，同时对实验结果进行了必要的分析。
