quick start

2 Topics
the nucleus

7 Topics
framework

6 Topics
electric monopole shift

5 Topics
magnetic hyperfine interaction

6 Topics
electric quadrupole interaction

8 Topics
Mössbauer spectroscopy

7 Topics
synchrotron methods

8 Topics
NMR & NQR

7 Topics
EPR

7 Topics
LTNO & NMR/ON

7 Topics
PAC

5 Topics
There are two tasks related to video:

**First task:** Use the forum underneath to describe what happens to a free La atom, subject to an external magnetic field, when it absorbs a microwave photon that satisfies the EPR resonance condition. As usual, feel free to comment respectfully on answers others have posted on the forum.

**Second task:** Consider the following picture that is taken from the video above:

Assuming a nuclear g-factor g=1, a nuclear spin I=1/2 and applied field B_{0}=2 T, determine the photon energy for photons that will be absorbed in the case without hyperfine interaction. How does this photon energy change when there is a hyperfine interaction with B_{hf}=10 T? (consider transitions between the former m_{J}=-3/2 and -1/2 levels, and transitions between the former m_{J}=-1/2 and +1/2 levels)

Submit your answer on the forum underneath, and check it against other available answers there.

Expected time: 40 minutes (report)

B10-02