4
votes
1answer
41 views

Effect of pressure increase on electron orbital wave functions

One of my nuclear physics exercises was to find out if increasing the pressure of a sample of $^{7}\textrm{Be}$ would increase the chance of electron capture to $^{7}\textrm{Li}$ occur. My reasoning ...
1
vote
0answers
30 views

How to estimate size of nucleus from minimum scattering angle of electrons? [closed]

I have the following problem: Electrons of energy 350MeV are scattered from a nucleus. The scatter pattern shows a minimum at a scatter angle of 45°. Estimate the size of the nucleus. I feel ...
1
vote
1answer
314 views

What prevents an atom's electrons from “collapsing” onto its protons? [duplicate]

Forgive me if the answer to this is obvious. I have no formal physics training, and I remember that when I asked my physics teacher this, she just frowned and said "Good question." An electron is ...
-3
votes
1answer
126 views

Is speed of electrons in atoms a constant during explosions? [closed]

E.g. in exploding nuclear bomb or some other big explosions. I mean if the speed of electrons as waves/particles is a constant or changes according to other "forces" involved?
3
votes
1answer
234 views

PNMR, Pulsed Nuclear Magnetic Resonance, Experiment

I am writing a lab report for class on PNMR experiment that we did. How come in this experiment we don't worry about the electron spins in our sample? Aren't the electrons affected by the PNMR machine ...
6
votes
1answer
805 views

Why doesn't orbital electron fall into the nucleus of Rb85, but falls into the nucleus of Rb83?

Rb83 is unstable and decays to Kr-83. Mode of the decay is electron capture. Rb85 is stable. The nuclei Rb83 and Rb85 have the same charge. Rb85 is heavier than Rb85, but gravitation is too weak to ...