What is the Significance of Resonance in Nuclear Magnetic Resonance?

In summary, Nuclear magnetic resonance is the study of the nucleus in the presence of a magnetic field and the possible states it can have. The term "resonance" refers to the phenomenon where the frequency of the applied magnetic field is equal to the intrinsic frequency of the particle, resulting in a higher probability of being in a certain spin state. This is known as Rabi's formula. By scanning with different frequencies of applied magnetic field, a spectrum can be obtained which can be used to determine the density of certain nuclei in a region of the body.
  • #1
GAGS
55
0
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??
 
Physics news on Phys.org
  • #2


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.
 
  • #3


Thank you so much sir.
 
  • #4


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.
 

What is nuclear magnetic resonance (NMR)?

Nuclear magnetic resonance (NMR) is a physical phenomenon that occurs when the nuclei of certain atoms are placed in a magnetic field and then exposed to a second, oscillating magnetic field. This causes the nuclei to align with the magnetic field and absorb and emit electromagnetic radiation at specific frequencies, which can be used to study the chemical and physical properties of molecules.

What are the applications of NMR?

NMR has a wide range of applications in various fields such as chemistry, biochemistry, medicine, and materials science. It is commonly used for structural analysis of molecules, identification of substances, and studying chemical reactions. In medicine, NMR is used for medical imaging, particularly in magnetic resonance imaging (MRI), which allows for non-invasive visualization of internal body structures.

How is NMR different from MRI?

NMR and MRI both use the same physical principles, but they have different applications. NMR is primarily used for studying the properties of molecules, while MRI is used for medical imaging. Additionally, NMR typically uses a much stronger magnetic field than MRI, which allows for more detailed analysis of molecular structures.

What are the advantages of using NMR in research?

NMR has several advantages that make it a valuable tool in scientific research. It is non-destructive, meaning that samples can be reused for further analysis. It also allows for the analysis of complex mixtures, making it useful for studying biological samples. Additionally, NMR provides highly accurate and detailed structural information, making it a powerful tool for studying the properties of molecules.

What are the limitations of NMR?

While NMR is a powerful technique, it also has some limitations. One major limitation is the high cost of equipment and maintenance, which can make it inaccessible to some researchers. Additionally, NMR requires a relatively large sample size and can be sensitive to sample impurities, which can affect the accuracy of the results. NMR is also limited in its ability to analyze substances that do not contain magnetic nuclei, such as certain organic compounds.

Similar threads

I Confused about fluorescence at resonance
    • Atomic and Condensed Matter
Replies
5
Views
2K
A Effects of magnetic fields on material (Magnetic resonance)
    • Other Physics Topics
Replies
8
Views
590
I Magnetization inside a diamagnetic material antiparallel to ##B_{ext}##
    • Atomic and Condensed Matter
Replies
1
Views
868
Usage of absorption and magnitude mode spectra in nuclear magnetic resonance
    • Electromagnetism
Replies
1
Views
12K
I How to depict a nuclear magnetic octupole
    • High Energy, Nuclear, Particle Physics
Replies
3
Views
1K
Difference between resonance in undamped vs damped mass-spring-dashpot
    • Introductory Physics Homework Help
Replies
17
Views
384
I Help Understanding Electron Spin Resonance
    • Atomic and Condensed Matter
Replies
1
Views
1K
A Understanding the Limitations of Electron Spin Resonance
    • Quantum Physics
Replies
5
Views
419
I Feshbach resonance: ELI5 or resources for undergraduate
    • Atomic and Condensed Matter
Replies
1
Views
1K
I Probe absorption and dressed states
    • Atomic and Condensed Matter
Replies
3
Views
1K

Hot Threads

Recent Insights

Back
Top