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solid angle |
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solid angle [′säl·əd ′aŋ·gəl] (mathematics) A surface formed by all rays joining a point to a closed curve. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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with [OMEGA] the solid angle around the point and d[[OMEGA]. In order to collect those protons which take off in a direction away from the MCP, a fourth deflecting grid set at 22 kV to 26 kV is inserted between the decay volume and the electron detector to bring about a 4[pi] collection solid angle for protons. This combination of a smaller spot and larger solid angle of collection significantly enhances the scattering signal from pattern defects, as well as the signal from contaminants and other defect types. |
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