Low-lying excited states in nuclei

In summary, low-lying excited states in nuclei are energy levels in the nucleus of an atom that are only slightly higher in energy than the ground state. They are important in nuclear physics as they provide information about nuclear forces and the behavior of protons and neutrons. These states are studied through various experimental techniques and have applications in nuclear energy, nuclear weapons, and medical imaging. The energy levels of low-lying excited states are significant in determining the stability and behavior of atomic nuclei and can help us understand processes such as radioactive decay and fusion reactions.
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kelly0303
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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!
 
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Measure which transitions are allowed, and if possible measure the angular spectrum of emitted photons.
 
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Hi,

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

Regards,
ORF
 

1. What are low-lying excited states in nuclei?

Low-lying excited states in nuclei refer to the energy levels of a nucleus that are slightly higher than the ground state. These states are typically formed by the excitation of one or more nucleons (protons or neutrons) to a higher energy level within the nucleus.

2. How are low-lying excited states in nuclei studied?

Low-lying excited states in nuclei can be studied through various experimental techniques such as nuclear spectroscopy, which involves bombarding the nucleus with particles or photons and measuring the resulting radiation. Theoretical models and calculations are also used to study these states.

3. What is the significance of low-lying excited states in nuclei?

Low-lying excited states in nuclei play a crucial role in understanding the structure and properties of atomic nuclei. They provide information about the nuclear forces and interactions between nucleons, and can also be used to study nuclear reactions and decay processes.

4. How do low-lying excited states in nuclei affect nuclear stability?

The presence of low-lying excited states in nuclei can affect their stability by altering their energy levels and changing the balance between the attractive and repulsive forces within the nucleus. This can lead to changes in the half-life and decay modes of a nucleus.

5. Can low-lying excited states in nuclei be used in practical applications?

Yes, low-lying excited states in nuclei have several practical applications. For example, they are used in nuclear medicine for diagnostic imaging and cancer treatment, and in nuclear power plants for energy production. They are also studied in astrophysics to understand the processes that occur in stars and other celestial bodies.

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