Editing Rotational relaxation

Jump to navigation Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 15: Line 15:
According to simple [[rotational diffusion]] theory, the relaxation time
According to simple [[rotational diffusion]] theory, the relaxation time
for <math>c_1(t)</math> would be given by
for <math>c_1(t)</math> would be given by
<math>\tau_1 = \frac{1}{2D_\mathrm{rot}}</math>, and the relaxation time for
<math>\tau_1 = 1/2D_\mathrm{rot}</math>, and the relaxation time for
<math>c_2(t)</math> would be <math>\tau_2 = \frac{1}{6D_\mathrm{rot}}</math>.
<math>c_2(t)</math> would be <math>\tau_2 = 1/6D_\mathrm{rot}</math>.
Therefore, <math>\tau_1= 3 \tau_2</math>. This ratio is actually lower in simulations,
Therefore, <math>\tau_1= 3 \tau_2</math>. This ratio is actually lower in simulations,
and closer to <math>2</math>; the departure from a value of 3 signals rotation
and closer to <math>2</math>; the departure from a value of 3 signals rotation
Line 32: Line 32:
| HH  || H-H axis  ||  <math>\tau_2=2.0</math>ps  (H-H dipolar relaxation NMR)
| HH  || H-H axis  ||  <math>\tau_2=2.0</math>ps  (H-H dipolar relaxation NMR)
|-   
|-   
| OH  || O-H axis  ||  <math>\tau_2=1.95</math>ps (<sup>17</sup>O-H dipolar relaxation NMR)
| OH  || O-H axis  ||  <math>\tau_2=1.95</math>ps (<math>^{17}</math>O-H dipolar relaxation NMR)
|-
|-
| <math>\mu</math> || dipolar axis || not measurable, but related to bulk dielectric relaxation
| <math>\mu</math> || dipolar axis || not measurable, but related to bulk dielectric relaxation
Please note that all contributions to SklogWiki are considered to be released under the Creative Commons Attribution Non-Commercial Share Alike (see SklogWiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To edit this page, please answer the question that appears below (more info):

Cancel Editing help (opens in new window)