Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1991-06-10
1993-03-09
Arana, Louis
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324318, G01V 300
Patent
active
051929104
ABSTRACT:
In a temperature-control device for samples, in particular for NMR spectroscopy, comprising a vessel (20) provided with an opening (19) for receiving a measuring sample (1), an inlet opening (10) for introduction of the fluid, an outlet opening (15) for the outflow of the fluid and a flow channel (18) through which at least a partial flow of the fluid is guided past the sample (1), as direct fluid flow, from the bottom to the top, there is provided at least one by-pass channel (17) which is arranged in such a way that an additional partial fluid flow can be guided past the upper area of the said sample (1) in the form of a by-pass fluid flow (7). This enables also the upper area of the sample (1) to be temperature-controlled in an efficient way so as to minimize the temperature gradient in the sample (1). The temperature-control device may comprise, in the upper area of the sample (1), a heat-exchanger system (14) which concentrates the direct fluid flow ( 8), after it has been combined with the by-pass fluid flow (8), around the sample (1). One achieves in this manner efficient temperature control of the upper section of the sample by the fluid flow, without any disturbing thermal obstacles.
REFERENCES:
patent: 3525928 (1970-08-01), Nagao et al.
patent: 3588677 (1971-06-01), Kleiman et al.
patent: 4218892 (1980-08-01), Stephens
patent: 4266194 (1981-05-01), Hlavka
patent: 4940942 (1990-07-01), Bartuska et al.
J. Phys. E: Sci. Instrum., vol. 12, 1979, P. Bruesch and W. Foditsch, "A versatile high- and low-temperature optical cell for reflectivity, transmission and light-scattering experiements", pp. 872 to 874.
Yoshida "Modified Variable Temperature Control Unit for NMR Spectrometers" Rev Sci Instr Bd52 Nr3 Mar. 1981.
Aguilar-Parrilla et al. "Temp. Gradients & Sample Heating in Variable Temp. High Speed Mas NMP Sgec." Jo. Mag. Res. Bd187 Nr3 May 1990.
Hepp Phillip
Rindlisbacher Martin
Schett Oskar
Tschopp Werner H.
Arana Louis
Hackler Walter A.
Spectrospin AG
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