`alpha`-Particles can be detected using

Options

A. thin aluminium sheet
B. barium sulphate
C. zinc sulphide screen
D. gold foil.

Explanation

To solve the question "alpha-Particles can be detected using", we will analyze the options provided and determine which one is correct based on the information from the video transcript.

### Step-by-Step Solution:

1. **Understanding Alpha Particles**: Alpha particles are positively charged particles that consist of two protons and two neutrons. They are emitted during radioactive decay and can be detected using various materials.

2. **Evaluating the Options**:
- **Thin Aluminium Sheet**: While alpha particles can be stopped by thin materials, they are not effectively detected using just an aluminum sheet.
- **Barium Sulphate**: This compound does not serve as a direct detector for alpha particles.
- **Zinc Sulphide Screen**: This is a well-known detector for alpha particles. In Rutherford's gold foil experiment, a zinc sulfide screen was used, and when alpha particles hit the screen, they caused it to emit a green light, indicating detection.
- **Gold Foil**: Gold foil was used in the experiment to observe the scattering of alpha particles, not for their detection.

3. **Conclusion**: Based on the analysis, the correct answer is the **Zinc Sulphide Screen**, as it is specifically used to detect alpha particles by producing a visible light signal upon interaction.

### Final Answer:
Alpha particles can be detected using a **Zinc Sulphide Screen**.

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