翻訳と辞書 Words near each other ・ Microstoria ・ MicroStrategy ・ MicroStrategy Analytics ・ Microstrip ・ Microstrip antenna ・ Microstrip detector ・ Microstrobos ・ Microstrobos niphophilus ・ Microstroma juglandis ・ Microstromataceae ・ Microstromatales ・ Microstrophia ・ Microstrophia modesta ・ Microstrophia nana ・ Microstructure ・ Microstructured optical arrays ・ Microstructured optical fiber ・ Microsuchus ・ Microsuperman ・ Microsurgeon ・ Microsurgeon (video game) ・ Microsurgery ・ Microsurgical endodontics ・ Microsurgical lumbar laminoplasty ・ Microsveltia ・ Microsveltia karubar ・ Microsveltia metivieri ・ Microsveltia patricia ・ Microsveltia procerula ・ Microsveltia recessa Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Microstructured optical arrays ： ウィキペディア英語版 Microstructured optical arrays Microstructured optical arrays (MOAs) are instruments for focusing x-rays. MOAs use total external reflection at grazing incidence from an array of small channels to bring x-rays to a common focus. This method of focusing means that MOAs exhibit low absorption. MOAs are used in applications which require x-ray focal spots in the order of few micrometers or below, such as radiobiology of individual cells. Current MOA-based focusing optics designs have two consecutive array components in order to reduce comatic aberration. ==Properties== MOAs are achromatic (which means the focal properties do not change for radiation of different wavelengths) as they utilize grazing incidence reflection. This means that they are able to focus chromatic radiation to a common point unlike zone plates. MOAs are also adjustable as the optic can be compressed to alter the focal properties such as focal length. Focal length can be calculated for the system in fig. 1 using the geometry shown in fig. 2 where it can be seen that changing the gap between the components (''d''+''D'' in the figure) or the radius of curvature (''R'') will have a large effect on the focal length. MOAs have been used in configurations shown in figs. 1 & 3 whereby one or both components can be adjusted. This has varying effects on the focal properties, in general it has been found that smaller focal spot sizes are apparent when MOAs are used as shown in fig. 1 with only the second component adjusted. The focal length of this system can be calculated using the geometry shown below: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Microstructured optical arrays」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.