Low-lying excited states in nuclei

Click For Summary
SUMMARY

The discussion focuses on the experimental measurement of parity and spin in low-lying excited states of nuclei. Energy levels can be determined by exciting the nucleus through collisions with nucleons or electrons, followed by photon emission analysis. The spin and parity are inferred by examining allowed transitions and the angular distribution of emitted photons, alongside comparisons to theoretical shell model calculations for accurate assignments.

PREREQUISITES
  • Understanding of nuclear physics concepts, particularly excited states
  • Familiarity with photon emission and detection techniques
  • Knowledge of angular momentum and parity in quantum mechanics
  • Experience with theoretical shell model calculations in nuclear physics
NEXT STEPS
  • Research methods for measuring photon emission spectra in nuclear reactions
  • Study the theoretical framework of the shell model in nuclear physics
  • Explore techniques for analyzing angular distributions of emitted photons
  • Investigate experimental setups for colliding nucleons or electrons with nuclei
USEFUL FOR

Physicists, nuclear researchers, and students interested in experimental nuclear physics and the characterization of nuclear states.

kelly0303
Messages
573
Reaction score
33
Hello! How are the parity and spin of excited states of nuclei measured experimentally. I imagine that the energy can be easily measured by exciting the nucleus (by colliding it with a nucleon or electron for example) and then measuring the emitted photons. But how can one infer the spin and parity associated with that decay? Thank you!
 
  • Like
Likes   Reactions: ORF
Physics news on Phys.org
Measure which transitions are allowed, and if possible measure the angular spectrum of emitted photons.
 
  • Like
Likes   Reactions: ORF
Hi,

you can also compare with theoretical shell model calculations, and assign spin and parities from these models.

Regards,
ORF
 

Similar threads

Undergrad Static and dynamic excited states
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Separation energy of nucleons and Coulomb barrier
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Why Is Octupole Deformation Measurable in Nuclei but Not Dipole Deformation?
  • · Replies 10 ·
Replies
10
Views
2K
Undergrad Alpha decay: why Helium nuclei?
  • · Replies 8 ·
Replies
8
Views
4K
Undergrad Quadrupole deformation in nuclei
  • · Replies 9 ·
Replies
9
Views
2K
High School Can Kinetic Energy Trigger Nuclear Reactions?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can nuclei be used in place of atoms for stimulated emission in lasers?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Interpretation of Bi-207 decay spectrum
  • · Replies 6 ·
Replies
6
Views
5K
Undergrad Glueballs Observed For The First Time
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Creating Excited States of Nuclei Without Neutrons: Is it Possible?
  • · Replies 6 ·
Replies
6
Views
4K