翻訳と辞書 Words near each other ・ Wieman v. Updegraff ・ Wiembach ・ Wiembecke ・ Wiemersdorf ・ Wiemerstedt ・ Wien (community), Wisconsin ・ Wien (disambiguation) ・ Wien (river) ・ Wien Air Alaska ・ Wien Air Alaska Flight 99 ・ Wien approximation ・ Wien bridge ・ Wien bridge oscillator ・ Wien Consolidated Airlines Flight 55 ・ Wien effect ・ Wien filter ・ Wien Floridsdorf railway station ・ Wien Franz-Josefs-Bahnhof ・ Wien Hauptbahnhof ・ Wien Heiligenstadt railway station ・ Wien Hetzendorf railway station ・ Wien Hütteldorf railway station ・ Wien Leopoldau railway station ・ Wien Liesing railway station ・ Wien Matzleinsdorfer Platz railway station ・ Wien Meidling ・ Wien Meidling railway station ・ Wien Mitte railway station ・ Wien Modern ・ Wien Neêrlands Bloed 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 Wien filter ： ウィキペディア英語版 Wien filter A Wien filter (velocity selector) is a device consisting of perpendicular electric and magnetic fields that can be used as a velocity filter for charged particles, for example in electron microscopes and spectrometers.〔 It is used in accelerator mass spectrometry to select particles based on their speed. The device is composed of orthogonal electric and magnetic fields, such that particles with the correct speed will be unaffected while other particles will be deflected. It is named for Wilhelm Wien who developed it in 1898 for the study of anode rays. It can be configured as a charged particle energy analyzer, monochromator, or mass spectrometer.〔 ==Theory== Any charged particle in an electric field will feel a force proportional to the charge and field strength such that $\backslash vec\; =\; q\; \backslash vec$, where F is force, q is charge, and E is electric field. Similarly, any particle moving in a magnetic field will feel a force proportional to the velocity and charge of the particle. The force felt by any particle is then equal to $\backslash vec\; =\; q\; \backslash vec\; \backslash times\; \backslash vec$, where F is force, q is the charge on the particle, v is the velocity of the particle, B is the strength of the magnetic field, and $\backslash times$ is the cross product. In the case of a velocity selector, the magnetic field is always at 90 degrees to the velocity and the force is simplified to $F\; =\; qvB$ in the direction described by the cross product. Setting the two forces to equal magnitude in opposite directions it can be shown that $\backslash frac\; =\; v$. Which means that any combination of electric ($\backslash vec$) and magnetic ($\backslash vec$) fields will allow charged particles with only velocity $\backslash vec$ through. 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「Wien filter」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.