China Wholesale Planck Constant Factory – LADP-14 Determining Specific Charge of Electron – Advanced Model – Labor

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China Wholesale Planck Constant Factory – LADP-14 Determining Specific Charge of Electron – Advanced Model – Labor Detail:

Experiments

1. Quantitatively measure the rules of electron movement in both electric and magnetic field.

a) Electrical deflection: electron + transversal electric field

b) Electrical focusing: electron + longitudinal electric field

c) Magnetic deflection: electron + transversal magnetic field

d) Spiral motion magnetic focusing: electron + longitudinal magnetic field

2. Determine e/m ratio of an electron and verify the polar coordinate equation of electron spiral motion.

3. Measure geomagnetic component.

The instruction manual contains comprehensive materials including experimental configurations, principles, step-by-step instructions and some experimental results. Please click Experiment Theory and Contents to find more information about this apparatus.

Specifications

Description	Specifications
Filament	voltage 6.3 VAC; current 0.15 A
High voltage UA2	600 ~ 1000 V
Deflecting voltage	-55 ~ 55 V
Grid voltage UA1	0 ~ 240 V
Control grid voltage UG	0 ~ 50 V
magnetization current	0 – 2.4 A
Solenoid parameters
Longitudinal coil (long)	length: 205 mm; inner dia: 90 mm; outer dia: 95 mm; number of turns: 1160
Transversal coil (small)	length: 20 mm; inner dia: 60 mm; outer dia: 65 mm; number of turns: 380
Digital meters	3-1/2 digits
Sensitivity of electrical deflection	Y: ≥0.38 mm/V; X: ≥0.25 mm/V
Sensitivity of magnetic deflection	Y: ≥0.08 mm/mA
e/m measurement error	≤5.0%

Parts List

Description	Qty
Main unit	1
CRT	1
Long coil (solenoid coil)	1
Small coil (deflection coil)	2
Division screen	1
Cable	2
Instructional manual	1

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