MYTUTOR SUBJECT ANSWERS

315 views

How would you use electron diffraction to estimate nuclear diameter

So electrons fall into the category of particles called lepton s with don't interact with the strong nuclear force, this means they can be used for diffraction without getting affected too much by the nuclei they are intended to measure. This is because neautrons and alpha particles are affected by the strong nuclear force. 

A beam of moving electrons ahs a de Broglie wavelength which at high speeds is approximated by hc/E where h is the planck constant, c is the speed of light and E is the charge in coulombs. Remember that in a question you're likely to get the beam strength in MeV so you need to times by 1.6*10-19 to get to coulombs!

Once we have the wavelenght we can use the sin function to obtain the diameter through the equation sin(theta)= 1.22*wavelength/d where d is the diameter of the nucleus and theta is the angle of the straight through posistion to the first minimum. This bit is somewhat easier to explain with a diagram. The 1.22 may sound a little arbitrary but it does have it's basis in reasonably complex physics, https://www.quora.com/Where-does-this-%CE%B8-1-22-%CE%BB-D-come-from-Whats-its-derivation 

Robert L. A Level Maths tutor, GCSE Maths tutor, A Level Physics tuto...

10 months ago

Answered by Robert, an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

56 SUBJECT SPECIALISTS

£22 /hr

Samuel H.

Degree: Mathematics with International Study (Masters) - Exeter University

Subjects offered: Physics, Maths

Physics
Maths

“I have not only been able to teach AS Level students how to solve mechanics problems; I helped them understand the concepts behind the problems”

£22 /hr

Alex B.

Degree: Physics (Masters) - Durham University

Subjects offered: Physics, Maths

Physics
Maths

“About me: I’m Alex and I have just completed my first year studying physics at Durham University, with a first. I have a passion for mathematics and how it can be applied to solve problems in physics. Throughout my A levels, other stu...”

£20 /hr

Luke C.

Degree: Physics with Astronomy (Masters) - Nottingham University

Subjects offered: Physics, Maths

Physics
Maths

“I'm a physics student at the University of Nottingham. I'm looking forward to tutoring people who have a similar passion for my subject.”

MyTutor guarantee

About the author

Robert L.

Currently unavailable: for regular students

Degree: Natural Sciences (Masters) - Durham University

Subjects offered: Physics, Maths+ 1 more

Physics
Maths
Geography

“Mathematically minded Durham Natural Scientist with fantastic A-Level results I could pass on to you! Full marks in 3/4 Geography exams, FP3 and M2.Super experienced tutor, helped students independently whilst in sixth form, voluteer...”

You may also like...

Posts by Robert

differentiate x^3(1+x)^5 with respect for x

Evaluate how plate tectonics theory helps our understanding of the distribution of seismic and volcanic events.

How would you use electron diffraction to estimate nuclear diameter

solve z^4=2(1+isqrt(3)) giving roots in form r(cos(theta)+isin(theta))

Other A Level Physics questions

Can you jump a motorcycle into space?

How is a piezoelectric crystal used to generate waves of ultrasound?

What's the highest height a ball thrown straight up will reach?

Define electrical resistance

View A Level Physics tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok