Radioactivity: α, β and γ decayरेडियोऐक्टिवता: α, β और γ क्षयRadioactivity: α, β and γ decay
NCERT Section 13.6 · Class 12 Physics · Chapter 13 · interactive diagram
Read Chapter 13 with this diagramइस डायग्राम के साथ अध्याय 13 पढ़ेंIs diagram ke saath Ch 13 padhiyeAll Physics diagramsसभी भौतिकी डायग्रामSaare Physics diagrams
Parts and what they mean
- Unstable (radioactive) nucleus (अस्थायी (रेडियोऐक्टिव) नाभिक) — A nucleus that decays on its own — no outside push needed. Radioactivity is a nuclear phenomenon.
- New (daughter) nucleus (नया (संतति) नाभिक) — After α or β decay the nucleus becomes a different element (α: Z − 2, A − 4; β⁻: Z + 1; β⁺: Z − 1; A unchanged in β).
- α-decay (α-क्षय) — A helium nucleus ⁴₂He (2 protons + 2 neutrons) is emitted.
- β-decay (β-क्षय) — An electron, or a positron (same mass as the electron, opposite charge), is emitted.
- Excited nucleus (उत्तेजित नाभिक) — A nucleus with extra energy drops to a lower energy state of the same nucleus.
- γ-decay (γ-क्षय) — High-energy photons (hundreds of keV or more) are emitted. Z and A do not change.
Original diagram drawn by Simple Learning Hub, based on NCERT Section 13.6. Report a mistake