China Wholesale Magnetoresistive Effect Manufacturers – LEEM-23 Specific Charge of Electron Apparatus – Labor

Introduction

The instrument uses the magnetic field generated by the Helmholtz coil to control the electron motion in the Lorentz force tube to determine the electron specific charge. It consists of Lorentz force tube (built-in scale), Helmholtz coil, power supply and measuring meter head, etc. The whole is installed in a wooden dark box, which is convenient for observation, measurement and management.

Main experimental contents:

1、Observation of deflection of electron beam under the action of electric field;

2、Observation of the law of motion of moving charge in the magnetic field under the action of Lorentz force;

3、Determination of specific charge of electron.

Main technical parameters

1、Lorentz force tube diameter 153mm, filled with inert gas, built-in scale, scale length 9cm;

2、Lorentz force tube mount can be rotated, the angle of rotation 350 degrees, with scale indication;

3、Deflection voltage 50~250V continuously adjustable, no meter display;

4、Acceleration voltage 0~250V continuously adjustable, built-in current limit protection, digital voltmeter directly display voltage The resolution is 1V;

5, excitation current 0~1.1A continuously adjustable, digital ammeter directly display current, resolution 1mA;

6, Helmholtz coil effective radius 140mm, single coil turns 300 turns;

7, solid wood wooden box, wooden box size 300×345×475mm 8, electronic charge to mass ratio measurement error better than 3%.