In neutron discovery experiment Beryllium target is bombarded by

Options

A. Protons
B. Alpha particles
C. Neutrons
D. Deutrons

Answer

To solve the question regarding the neutron discovery experiment where a Beryllium target is bombarded, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Context**: The question refers to the historical experiment that led to the discovery of neutrons. This experiment involved bombarding a target material to observe the emission of a new type of radiation.

2. **Identifying the Bombarding Particle**: In the early 1930s, scientists conducted experiments using alpha particles as the bombarding agents. Alpha particles are emitted from radioactive materials such as polonium.

3. **Target Material**: The target material used in these experiments included Beryllium, Lithium, and Boron. When alpha particles bombarded Beryllium, they resulted in the emission of neutral particles.

4. **Discovery of Neutrons**: The neutral particles emitted from the Beryllium target were identified as neutrons. This was a significant discovery in nuclear physics, as neutrons are one of the fundamental components of atomic nuclei.

5. **Conclusion**: Therefore, in the neutron discovery experiment, the Beryllium target is bombarded by alpha particles.

### Final Answer:
The Beryllium target is bombarded by **alpha particles**.

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