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1. In the AQA June 2012 Unit 5 paper, Question 5C asks to make comparisons between the two methods of estimating the radius of the nucleus - Rutherford scattering and diffraction scattering.

Include: Principles of each experiment
Accuracy limitations

I understand Rutherford's experiment but I don't know how it can be used to estimate the radius of the nucleus. I know you can determine the closest approach by making the kinetic energy = potential energy but how do you find the radius of the nucleus.

Can someone also explain electron diffraction. I wasn't taught this and I don't understand the principles from the mark scheme.

Thanks
2. anyone?
3. Think of the physics of the interactions

Rutherford- how do alphas 'see' nuclei; also, what proportion of alphas undergo large deflections and how might that change if nuclei were large?

Electrons- they will interact with both nuclei and orbital electrons

Don't forget neutron diffraction too, unless electron diffraction was specifically required
4. (Original post by Cora Lindsay)
Think of the physics of the interactions

Rutherford- how do alphas 'see' nuclei; also, what proportion of alphas undergo large deflections and how might that change if nuclei were large?

Electrons- they will interact with both nuclei and orbital electrons

Don't forget neutron diffraction too, unless electron diffraction was specifically required
Thanks for the response!

I understand the physics of the interactions during Rutherford's scattering (The particles are repelled due to an electrostatic force?)
Do you mean that the experiment does not give a definite estimation (a value). It just determines if the nucleus is small or big. So nuclei with larger radii will cause more alpha particles undergo large deflections.

I don't understand electron scattering Do you have any resources to help
5. bump

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