Liquid drop model-an introduction

1. Presented by Muhammad Saeed

2.  Incompressible liquid droplet
 Spherically symmetric
 Density is independent of its size
 Movement of the molecules

3.  Heat of vaporization  Binding Energy

4.  Fission Reaction  Water Droplet

5.  Fusion reaction

6. Volume term Surface term Coulomb term Asymmetry term Pairing
term
Anti-binding energy terms

7. If
F∝ 𝑞1𝑞2 F∝1/𝑟2
E= k
𝑞1𝑞2
𝑟2
Where k is constant

8. Volume
A=x cm × y cm × z cm = xyz 𝑐𝑚3

9. Volume = A
A=x cm × y cm × z cm = (
)𝑐𝑚3
Area = x cm × y cm =( ) 𝑐𝑚2
= 𝑐𝑚
3×2
3
=(𝑐𝑚3)
2
3
=𝐴
2
3

10. Volume = A= 𝑐𝑚3
length = x cm =( )
cm
= 𝑐𝑚
3
3
=(𝑐𝑚3)
1
3
=𝐴
1
3

13. Mass of nucleus = Total mass of protons and neutrons –
B(A,Z)
𝑐2