Physics307L: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 | |
