Discussion
What advantage does a cryogenically cooled probe offer?
Answer: B
Cooling the receiver coil and preamplifier to around twenty kelvin cuts their thermal noise and gives a signal to noise gain of three to four times, which is equivalent to running ten to sixteen times as many scans. The sample itself stays at its own temperature. Field is set by the magnet, shift range by shielding, and relaxation by the molecule. For a scarce natural product a cryoprobe often turns an impossible experiment into an overnight one.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development