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phototube |
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phototube [ˈfəʊtəʊˌtjuːb] n (Electronics) a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current 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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[FIGURE 4 OMITTED] The analysis program calculates the individual phototube efficiencies, thereby allowing for correction due to asymmetry in the counting; rates in each of the detection efficiency due to detection of the 511 KeV annihilation photons was taken into account by using the positron spectrum calculated by the program SPEBETA (21) as input for the Monte Carlo simulation package PENELOPE (22) using the techniques described in (23). 6x phototube, multiplied by the ocular magnifications of 1, 5, and 10x to obtain a total magnification of 0. Each cone, part of an experiment called CYGNUS, contains a plastic sheet that scintillates when a particle strikes it; a phototube at the top of each cone senses the faint burst of light. |
phototube |
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