Modification of air/fluid flow around nuclear magnetic resonance probe and methods of use

The dual RSVTC (Restricted Section Variable Temperature Chamber) comprising:

• an entrance with a first diameter;
• a reduced section with a second diameter;
• a plurality of channels;
• and
• a plurality of exits, where the dual RSVTC is adapted to connect with a gas flow comprising a plurality of gas molecules, where the dual RSVTC is adapted to connect to a bore tube such that passage of the plurality of gas molecules through the dual RSVTC deliver the plurality of gas molecules in the bore tube and contact a sample cell of a length of a NMR (Nuclear Magnetic Resonance) instrument, where the plurality of gas molecules passing through the dual RSVTC are either heated or cooled entering into the bore tube, where the plurality of gas molecules contacting the sample cell cause at least a plurality of sample molecules in the sample cell to be heated/cooled.

A method of detecting a NMR (Nuclear Magnetic Resonance) resonance of at least a nucleus from a plurality of nuclei of a sample molecule using a gas flow through a RSVTC (Restricted Section Variable Temperature Chamber) to heat/cool the sample molecule, where the RSVTC comprises an entrance with a first diameter, a reduced section with a second diameter, and an exit with a third diameter, comprising:

• (i) selecting a parent coil circuit comprising a parent coil and a sample coil circuit comprising a sample coil;
• (ii) selecting a sample;
• (iii) loading a plurality of sample molecules into a sample cell, where the sample cell comprises a length;
• (iv) introducing the sample cell into a bore tube;
• (v) applying a magnetic field with the parent coil to the sample cell;
• (vi) exciting with the sample coil the plurality of sample molecules with one or both a radio frequency field and a microwave frequency field at a Larmor frequency to allow the parent coil to detect the resonance of the nucleus;
• and
• (vii) passing a flow of a gas through the RSVTC into contact with the sample cell to heat/cool the sample molecules.