Description
Atomfair-PE-628 Planck Constant Experiment Setup
Product Overview
Atomfair-PE-628 is a high-performance experimental instrument belonging to the optoelectronics and laser category, specifically designed for general physics experiments in colleges and universities. With advanced technical configurations and scientific experimental methods, it serves as an essential tool for students to explore the quantum nature of light and master photoelectric effect-related experimental technologies. Since its launch in July 2017, it has been widely recognized for its accuracy, ease of use, and rich experimental content.
Key Features
- Continuous Monochromatic Light Supply: Equipped with a grating monochromator, the device can continuously generate monochromatic light of different wavelengths. This ensures more comprehensive experimental data collection and significantly improves the accuracy of measurement results compared to traditional discrete wavelength light sources.
- Enriched Experimental Learning: The integrated monochromator allows students to not only conduct Planck constant measurement experiments but also gain in-depth understanding of the working principle and debugging methods of the monochromator during a single experiment. It effectively enriches the experimental learning content and broadens students’ technical horizons.
- High-Precision Measurement Method: Adopting the zero-crossing method for testing, which effectively reduces human operation errors caused by the inflection point method. The operation process is simpler, and the test results are more reliable and accurate, ensuring the scientificity of experimental data.
Experimental Contents
- Determine the volt-ampere characteristic curve of the phototube.
- Plot the frequency-voltage (ν—U) relationship curve.
- Use the graphical method or unary linear fitting method to achieve the following experimental objectives:
- Calculate the Planck constant (h);
- Determine the threshold frequency (ν) of the phototube cathode material;
- Calculate the work function (Ws);
- Verify Einstein’s equation.
- Measure the volt-ampere characteristic curve of the phototube under positive voltage conditions.
Technical Specifications & Configurations
| No. | Component | Technical Parameters |
|---|---|---|
| 1 | Light Source | Tungsten-halogen lamp, 12V 75W, radiation spectrum 350~2500nm, powered by a switching power supply |
| 2 | Axial Fan | DC 12V, designed for power supply heat dissipation |
| 3 | Condenser | Double-lens structure, with lens focal lengths f1=50mm and f2=70mm respectively |
| 4 | Monochromator | Grating monochromator, wavelength range 200~800nm; grating density 1200L/mm, blaze wavelength 500nm; wavelength accuracy ±3nm, wavelength repeatability ±1nm |
| 5 | Phototube | Spectral response range 190~700nm, peak wavelength 400±20nm |
| 6 | Measuring Amplifier | Composed of high-precision integrated circuits, current measurement range 10⁻⁸~10⁻¹³A, supporting six-speed magnification conversion |
Notes
- The above configurations and parameters are for reference only. The actual product shall be subject to the packing list.
- Atomfair reserves the right to make minor adjustments to product configurations without prior notice.
If you’re interested, have any questions, or have specific customization requirements, please feel free to contact us at inquiry@atomfair.com.
