Hydrogen Bomb is based upon the principle of
Nuclear fusion
Hydrogen Bomb Principle: Nuclear Fusion Explained
The question asks about the fundamental principle upon which a Hydrogen Bomb operates. Let's break down the science behind this powerful device.
Understanding the Hydrogen Bomb
A Hydrogen Bomb, also known as a thermonuclear weapon or H-bomb, is significantly more powerful than an atomic bomb (which uses fission). Its immense destructive capability comes from harnessing the energy released during nuclear reactions.
The Core Principle: Nuclear Fusion
The primary principle behind a Hydrogen Bomb is nuclear fusion.
- Nuclear fusion is a process where two or more light atomic nuclei combine to form a single, heavier nucleus.
- In the context of a Hydrogen Bomb, the fuel typically consists of isotopes of hydrogen, namely Deuterium (often denoted as $^2H$) and Tritium (often denoted as $^3H$).
- Under extreme conditions of temperature and pressure, these light nuclei overcome their mutual electrical repulsion and fuse together. For instance, Deuterium and Tritium can fuse to form Helium ($^4He$), releasing a neutron ($n$) and a tremendous amount of energy.
- The fusion reaction can be represented using LaTeX as: $^2H + ^3H \rightarrow ^4He + n + \text{Energy}$.
- Achieving the necessary conditions (millions of degrees Celsius) requires a significant energy input, which is usually provided by a primary stage involving a small nuclear fission bomb (like an atomic bomb).
Distinguishing from Nuclear Fission
It's important to differentiate fusion from nuclear fission, which is the principle behind atomic bombs:
- Nuclear fission involves the splitting of a heavy atomic nucleus (like Uranium-235 or Plutonium-239) into smaller nuclei, also releasing energy.
- While fission is used to trigger the fusion process in a Hydrogen Bomb, it is the fusion reaction itself that releases the vastly greater amount of energy characteristic of thermonuclear weapons.
Therefore, the Hydrogen Bomb is fundamentally based on the principle of nuclear fusion, amplified by the energy from an initial fission reaction.
Important Questions from Radioactivity
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The nuclei of 137 Cs decay by the emission of β - particles with a half life of 30.08 years. The activity (in units of disintegrations per second or Bq) of a 1 mg source of 137 Cs, prepared on January 1, 1980, as measured on January 1, 2021 is closest to
The Q - value of the α - decay of 232 Th to the ground state of 228 Ra is 4082 keV. The maximum possible kinetic energy of the α - particle is closest to
Radioactivity is the characteristic of which of the following?
Particles which can be added to the nucleus of an atom without changing its chemical properties are
