What is the Significance of Resonance in Nuclear Magnetic Resonance?

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Discussion Overview

The discussion revolves around the concept of resonance in the context of nuclear magnetic resonance (NMR), focusing on its significance and implications in understanding the behavior of nuclei in a magnetic field. Participants explore the meaning of resonance and its role in the interaction between magnetic fields and nuclear states.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks clarification on the term "resonance" as it relates to nuclear magnetic resonance, expressing confusion about its significance.
  • Another participant explains that resonance occurs when the frequency of the applied magnetic field matches the intrinsic frequency of the particle, leading to an increased probability of the particle being in a certain spin state, referencing Rabi's formula.
  • A further contribution describes the process of scanning with different frequencies of the applied magnetic field and measuring the emitted energy as photons, which results in a spectrum that can be used to determine the density of specific nuclei in a region.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the significance of resonance, as the initial inquiry remains open-ended and responses provide varying levels of technical detail without resolving the initial confusion.

Contextual Notes

The discussion includes assumptions about the understanding of resonance and its mathematical implications, which are not fully elaborated upon. The references to specific formulas and processes suggest a dependence on prior knowledge of quantum mechanics and NMR techniques.

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Nuclear magnetic resonance!

Hello all,i was studying about nuclear magnetic resonance,what i came to know is the study of nucleus in presence of magnetic field and then considering the possible states. But sir/madam what i don't understand here is using the word "RESONANCE". What it signifies here? What does it mean here. I hope you have understand question??
 
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When the frequence is equal to the instrisic frequence of the particle, the probability for being in a certain spin state increases extremley much. -> See Rabi's formula

http://farside.ph.utexas.edu/teaching/qm/lectures/node58.html

So when the perturbation frequence (the freq of magnetic field) = E_2 - E_1 => You'll have a resonance.
 


Thank you so much sir.
 


NP

So what you do is that you scan with different frequencies of applied magnetic field, then measure the response (how much energy that is emited back as form of photons when turning of magnetic field). After this you have obtained a spectrum, and you can determine the denisity of a certain nuclei in a region of the body.
 

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