Compton Scattering: X-ray 0.010nm, 180 Degrees

[getcarter]

3) X-rays of wavelentgh 0.010nm are directed onto a target containing loosely bound electrons. For Compton scattering from one of those electrons, at an angle of 180 degrees, what are

a) the Compton shift,

b) the corresponding change in photon energy,

c) the kinetic energy of the recoiling electron, and

d) the electron's direction of motion?

Homework Equations

Lamda'-Lamda = [h/mc] (1-cos@)
\frac{h}{m_e c} = 2.43 \times 10^{-12}\,m

The Attempt at a Solution

p_{e'}^2c^2 = (hf + mc^2-hf')^2-m^2c^4

 

[olgranpappy]

3) X-rays of wavelentgh 0.010nm are directed onto a target containing loosely bound electrons. For Compton scattering from one of those electrons, at an angle of 180 degrees, what are

a) the Compton shift,

b) the corresponding change in photon energy,

c) the kinetic energy of the recoiling electron, and

d) the electron's direction of motion?

Homework Equations

Lamda'-Lamda = [h/mc] (1-cos@)
\frac{h}{m_e c} = 2.43 \times 10^{-12}\,m

The Attempt at a Solution

p_{e'}^2c^2 = (hf + mc^2-hf')^2-m^2c^4

in your equation, for scattering at 180 degrees, what is "cos@" equal to?

 

[getcarter]

relevants are above, i did not understand that you ask cos@,
sorry i don't understand the main idea of the question
and i need help.

 

[olgranpappy]

relevants are above, i did not understand that you ask cos@,
sorry i don't understand the main idea of the question
and i need help.

I am asking you this to determine whether or not you understand what the symbols in the equation are.
You wrote down something that says "cos@". Do you know what the symbol @ stands for?

 

[getcarter]

i tried to show tetha, [degree of cos.]
sorry.

 

[olgranpappy]

i tried to show tetha, [degree of cos.]
sorry.

Yes. And in the statement of the problem, what number is theta equal to?