学年

教科

質問の種類

化学 高校生

RHEED法の原理と得られる7つの情報が、この英文に書かれているみたいなのですが、よく分かりません。 分かる方助けてください!🙇‍♂️

INTRODUCTION Reection high-energy electron diHiraction (RHEED) uses a Rnely collimated electron beam with energy of 10-100 keV. The beam irradiates a sample surface with gazing incidence to obtain forward scattered difraction patterms. RHEED enables us to analyze structures of crystal surfaces at atomic levels and also to in situ monitor growth processes of thin films (mo、1988: Ichimiya and Cohen、2004: Peng et al.. 2011). From the arrangement。intensity and profile of the dilraction spots in RHEED patterns as described below in detail、 one can obtain various kinds of information: (1) the periodicity (unit cells) in atomic arrangements. (2) flat- ness of surfaces. (3) sizes of grains/domains of surface structures and microcrystals grown on the surface. (3) epitaxial relation between the grown flms/islands with respect to the substrate. (5) parameters character- izing structural phase transitions. (6) individual atomic positions in the unit cells. and (7) growth styles of thin films and numbers of atomic layers grown. The most important advantages of the method are that it is quite easy to install the RHEED apparatus in Yarious types of vacuum chambers without interfering with other components of apparatuses and to do real- time monitoring during thin-Rlm growths. Because of these advantages.RHEED is nowwidelyusednotonlyin research Iabs of surfaces and thin fims. but also in device production processes in industry Low-energy electron diiraction (LEED、see article Low-ENNERcy ErecroN DirscmoN)。 in which an electron beam of 10-100 eV in energy is irradiated onto a sample surface with nearly normal incidence to obtain back- scattered difraction patterns. is also widely used to analyze the atomic structures of crystal surfaces. Since one has to make the sample face directly to the LEED

未解決 回答数: 1
英語 高校生

13~18番どれが正解かお願いします。答えの確認がしたいです。

ーー HU 隊 Throughout history。 humans a 汰<<い have had an Urge to make social connections、 Making friends js Something that most p 3 GO] ple do naturally when meeting people through fmily and friends and getting to k 2 | 5 to know people in their neighborhood, at school or im the "workplace。 mm addition, the Internet has (|131) a new meeting place一 SNS). the social networking site Social networking sites were originally designed to help adults connect with other adults: Users (| 14 | ) their own profi le containing personal mformation (such as likes and dislikes) which others could look through, When you found someone with similar interests to you that you wanted to contact。 you *posted a message and waited for a reply. These types of SNS were PD but access was usually *ofE mits to children。 Tt should come aS no surprise that technologically *savvy teenagers would Want to use computers in a similar Way. Im the United States。 MySpace.com is one of the largest social networking sites with over 100 miliion users。 Unlike some sites that ( 司| ) a special invitation to jon, MySpace js open to everyone Over the age of 14. Users create their own personal profile page and can spend their time *blogging, posting photos and instant messaging with other members from all over the world. They can then decide whetherlthey want to make their profile available only to friends or to al registered USeTS. Many *teens now prefer using SNS to ( ) touch with friends and meet new people. Instead of asking for a phone number or lemailladdressi asking for someone's MySpace profile iS becoming almuch more lpopular 0計 NR

回答募集中 回答数: 0
2/2