BEX-8501 Zeeman effect experiment apparatus
This apparatus studies the Zeeman effect using the mercury-lamp 546.1nm line. A condenser collects the divergent lamp light, which passes through a polarizer and filter to become monochromatic before entering an F-P etalon and forming interference rings. A lens and CMOS camera image the rings. An adjustable constant-current supply controls magnetic-field strength through current. When the field is sufficiently strong, energy levels split into different spectral lines and each interference-ring order splits into multiple rings. Dedicated software acquires images and analyzes data to obtain the electron charge-to-mass ratio e/m. Rotating the electromagnetic coil by 90 degrees and fine-adjusting the optics allows observation parallel to the field.
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Overview
Specifications
| Parameter | Value |
|---|---|
| CMOS camera | 500 × ten thousand pixels. Pixel resolution 2592x1944 |
| Camera lens - Focal length | 50mm |
| Pen-type mercury lamp - Current | 10A |
| Pen-type mercury lamp - Power | 3W |
| Zeeman coil set - Magnetic-flux-density range | 0～1.2T |
| Adjustable constant-current source - Input | Wide input voltage range 110~220V |
| Adjustable constant-current source - Output current | 0-6A |
| Fabry-Pérot etalon - Center wavelength λ | λ=546.1nm |
| Interference filter - Center wavelength λ | λ=546.1nm |
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