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Methods and apparatus for sample temperature control in NMR spectrometers
US8941382B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8941382-B2 |
| Application number | US-201013201056-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 12, 2010 |
| Priority date | Feb 13, 2009 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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Described are methods and apparatus, referred to as “temperature-lock,” which can control and stabilize the sample temperature in an NMR spectrometer, in some instances with a precision and an accuracy of below about 0.1 K. In conventional setups, sample heating caused by experiments with high-power radio frequency pulses is not readily detected and is corrected by a cumbersome manual procedure. In contrast, the temperature-lock disclosed herein automatically maintains the sample at the same reference temperature over the course of different NMR experiments. The temperature-lock can work by continuous or non-continuous measurement of the resonance frequency of a suitable temperature-lock nucleus and simultaneous adaptation of a temperature control signal to stabilize the sample at a reference temperature value. Inter-scan periods with variable length can be used to maintain the sample at thermal equilibrium over the full length of an experiment.
First claim
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What is claimed is: 1. A nuclear magnetic resonance (NMR) system, comprising: a sample chamber; an adjustable heater to adjust an air temperature within the sample chamber; a thermocouple to provide a thermocouple signal representing the air temperature within the sample chamber; a sensor to monitor a frequency response of a thermometer substance within a sample in the sample chamber and to provide a varying output signal indicative of the frequency response of the thermomet…
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- G01R33/31Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8941382B2 cover?
- Described are methods and apparatus, referred to as “temperature-lock,” which can control and stabilize the sample temperature in an NMR spectrometer, in some instances with a precision and an accuracy of below about 0.1 K. In conventional setups, sample heating caused by experiments with high-power radio frequency pulses is not readily detected and is corrected by a cumbersome manual procedure…
- Who is the assignee on this patent?
- Hiller Sebastian, Wagner Gerhard, Harvard College
- What technology area does this patent fall under?
- Primary CPC classification G01R33/31. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).