Nuclei Part 4 | Radioactivity Decay | Nuclear Fission | Nuclear Fussion скачать в хорошем качестве

Nuclei Part 4 | Radioactivity Decay | Nuclear Fission | Nuclear Fussion

| Radioactivity Decay | Nuclear Fission | Nuclear Fussion Radioactivity of Nuclei – Chapter Description Radioactivity is a fundamental nuclear phenomenon in which unstable atomic nuclei spontaneously emit radiation to attain a more stable configuration. This process is natural, random, and independent of external conditions such as temperature, pressure, or chemical state. Discovery of Radioactivity Radioactivity was discovered by Henri Becquerel (1896) while studying uranium salts. Later, Marie and Pierre Curie made significant contributions by discovering new radioactive elements like polonium and radium. Types of Radioactive Emissions Radioactive nuclei emit three main types of radiations: Alpha (α) rays These are helium nuclei (⁴₂He) with high mass and charge. They have low penetrating power but high ionizing power. Beta (β) rays These are fast-moving electrons or positrons emitted during nuclear transformation. They have moderate penetrating and ionizing power. Gamma (γ) rays These are high-energy electromagnetic waves with very high penetrating power and low ionizing power.