1. How Does It Work?
Prepared By:-
Ali Asgar Master
Kathan Parikh
Shiven Joshi

2. Nagasaki Mushroom
cloud.
13 km high!

3. Nuclear Bomb Classification
Nuclear Bomb
A- Bomb H-Bomb
Thermonuclear
Gun Type Implosion Type
Bomb

4. A- Bomb
All existing Nuclear Bombs Derive some of
their energy from fission reactions.
• The Bombs which derive their energy
exclusively from Fission Reactions are
called Atomic Bombs.
This is a misnomer as the energy is derived
from its nucleus
• It is of two types :- Gun type &
Implosion type

5. Gun Type A- Bomb
Some sub critical fissile material is
held in place.
• Then another sub critical uranium mass is
shot into it using high explosives.
The contact continues for about a
microsecond and together the mass
becomes super critical which results
in nuclear fission chain reaction.

6. Implosion Type A-Bomb
Another method of nuclear
detonation is to fashion a sphere of
Fissile material of sub-critical mass.
• Then a shell of high explosives is made of
fitting pieces called lenses that drive most
of the explosion inward.
Due to this the fissile material is
compressed to the point where it is
super-critical and chain reaction
commences.
• It lasts about a microsecond and destroys a
city.

7. H- Bomb
It is made up of essentially, 3 things:-
1. Implosion Type Fission Bomb:- It contains a core of
U-235 and a tamper of U-238
2. Fusion Bomb:- A cylinder containing a core rod of
Plutonium-239 surrounded by lithium-duterate fuel
with a tamper of U-238.
3. Polystyrene foam:- The empty spaces are filled by
it.

9. H- Bomb Working
The Implosion type fission bomb goes off producing high
heat, X-Rays and neutrons.
• The X-rays heat the Foam and the tamper around Fusion Bomb, which
squeezes the fuel.
Fission is initiated in the plutonium rod producing
neutrons.
• These mix with Lithium-deuterate and produce deuterium and tritium,
which in such high temperatures and pressures form helium, high
heat, X-Rays, neutrons.
•It produces 700-times the energy released by the bombs exploded
in Hiroshima and Nagasaki.

10. Different Fuels Used

11. Uranium
Isotopes:-
U233:- 7x 108
U235:-1592 x 102
U238:-4468 x 106

12. Plutonium
Isotopes
Pu239:- 24110

13. Thorium
Isotopes
Th229:- 7340
Th230:- 75,380
Th232:- 1405 x 107

14. Neptunium
Isotopes
Np237:- 214 x 104

15. Bomb Power
•These Bombs Produce large amounts of energy.
•1 kg. of TNT is enough to make this Building fall.
•The yeild of “Little Boy” detonated in Hiroshima was 20000
tons.
•The yeild of first thermonuclear bomb was 10,000,000 tons.
•Hence, while atomic bombs are capable of destroying a city,
Hydrogen Bombs are capable of destroying small nations.
•The Tsar bomb of Russia may destroy half of India.

17. Nuclear Bomb stockpile chart