Compton Radius vs Compton Wavelength

  • Thread starter what_are_electrons
  • Start date
  • #1
what_are_electrons

Main Question or Discussion Point

A 1992 book dedicated to electrons writes about the Compton Radius of an electron. The Compton Wavelength for an electron is defined as 2.42x10(-10) cm, whereas this book defines the electron Compton radius as 0.386x10(-10) cm. What is the difference?
 

Answers and Replies

  • #2
2,425
6
  • #3
8
0
The ratio between both space magnitude are 6.2694, very close to 2*Pi.
Sure it's really 2*Pi
 
  • #4
8
0
:confused:
But wait: I think you mistaked the values
I have the for classical electron radious
Ro= e^2 /(mc^2)= 2.82E-13 cm.
and on the other hand, the compton wavelenght
LambdaC= h/mc= 24.3E-13 cm.
( m is the rest mass of the electron)



and the ratio is really LambdaC/Ro= 8.61 (dimensionless value)
 
  • #5
2
0
lanjarote said:
:confused:
But wait: I think you mistaked the values
I have the for classical electron radious
Ro= e^2 /(mc^2)= 2.82E-13 cm.
and on the other hand, the compton wavelenght
LambdaC= h/mc= 24.3E-13 cm.
( m is the rest mass of the electron)



and the ratio is really LambdaC/Ro= 8.61 (dimensionless value)
One easily ptoves by substituting known formula relations that lambda_C=(2pi/alpha)R_0, where alpha the fine structure constant.
 
  • #6
2
0
One easily proves by substituting known formula relations that lambda_C=(2pi/alpha)R_0, where alpha the fine structure constant.
 
  • #7
Meir Achuz
Science Advisor
Homework Helper
Gold Member
2,169
63
Lanjarote's first post was right, the second has an arith error.
Its just that some books use h and some use hbar .
 

Related Threads for: Compton Radius vs Compton Wavelength

Replies
1
Views
9K
  • Last Post
Replies
12
Views
13K
  • Last Post
Replies
1
Views
5K
  • Last Post
Replies
2
Views
787
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
4
Views
4K
Replies
1
Views
1K
Top