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Topic: What is the use of liquid nitrogen in NMR Spectrometer?  (Read 6005 times)

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Offline Winga

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What is the use of liquid nitrogen in NMR Spectrometer?
« on: August 21, 2004, 11:52:57 AM »
Is it used for cooling down the system or providing a low temperature condition for electron delocalization in superconductor?

Offline Mitch

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #1 on: August 21, 2004, 09:56:17 PM »
yes
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Offline Winga

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #2 on: August 22, 2004, 12:59:27 AM »
Both?

Offline Mitch

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #3 on: August 22, 2004, 04:37:00 PM »
superconductivity.
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Offline Winga

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #4 on: August 22, 2004, 07:54:30 PM »
That mean NMR Spectrometer does not generate much heat, right?

And why the superconductor generates a current only in very low temperature?

Offline Mitch

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #5 on: August 22, 2004, 08:48:36 PM »
Do metals "in general" conduct electricity better at lower or higher temperatures?
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Offline Winga

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #6 on: August 25, 2004, 05:47:45 AM »
Do metals "in general" conduct electricity better at lower or higher temperatures?
Lower temp.


In normal conditions, can superconductor itself generate electric current or not?

celan

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Re:What is the use of liquid nitrogen in NMR Spectrometer?
« Reply #7 on: September 20, 2004, 09:49:39 PM »
 The liquid nitrogen with  liquid He together   providing a low temperature condition for  superconductor.

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