Physics307L F09:People/Ozaksut/Notebook/071121

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connect banana plugs from DC power supply (Soar Corporation DC Power Supply 7403) to electron gun heater for 2 minutes: .7 A current, 6.3 V voltage. (Uchida e/m Experimental Apparatus Model TG-13)

Turn on 200V DC power supply (Gelman Instrument Company Deluxe Regulated Power Supply), connect with banana plugs to electrodes (accelerating voltage) on electron gun: 200V, 25mA. Double check with voltmeter (BK Precision Digital Multimeter 2831 B), connected with banana plugs to the Voltmeter sockets on the e/m Apparatus: 200 V.

Turn on the coil current (Soar DC power Supply PS3630) connected in series through a multimeter (Wavetek True RMS 85 XT): 1.96 A, 8 V.

theory http://www.physics.northwestern.edu/Lab/eoverm.pdf

electron accelerating voltage (V) coil current (A) right radius left radius
Trial 1 217 1.716 3 3.5
217 1.635 3 3.9
217 1.373 3.6 3.6
217 1.229 4 4.1
217 1.156 4.1 3.9
217 1.011 4.5 4
217 1.86 2.3 2.2
217 1.751 2.5 2.6
217 1.546 2.9 3
251 1.545 3.2 3.4
250 1.292 3.9 3.9
250 1.192 4.3 4
250 1.093 4.6 4.2
250 2.350 2 1.5
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