Nuclear magnetic resonance apparatus

In a nuclear magnetic resonance apparatus for producing two types of spectrums, the improvements comprising:

• a. a trans-receiver coil arranged perpendicularly with respect to the static magnetic field H.sub.0,
• b. an internal lock trans-receiver coil interposed along a third axis perpendicular to both the static magnetic field H.sub.0 and said trans-receiver coil axis,
• c. a transmission coil arranged along the same axis as the internal lock trans-receiver coil,
• d. a double tuned circuit connected to said trans-receiver coil for tuning said coil to first and second nuclear resonance frequencies,
• e. a transmitting means for supplying said trans-receiver coil or transmission coil with a burst of said first nuclear resonance RF,
• f. a first receiving means for amplifying and detecting a first nuclear resonance F.I.D. signal induced in said trans-receiver coil, by the burst of said first RF, said first receiving means being connected to said transmission coil via said double tuned circuit,
• g. a transmitting means for supplying said trans-receiver coil via said double tuned circuit with a burst of a second nuclear resonance RF,
• h. a second receiving means for amplifying and detecting the second nuclear resonance F.I.D. signal induced in said trans-receiver coil, said second receiving means being connected to said trans-receiver coil via said double tuned circuit,
• i. a transmitting means for supplying said internal lock trans-receiver coil with the third nuclear resonance RF,
• j. a third receiving means for amplifying and detecting a third nuclear resonance signal induced in said internal lock trans-receiver coil, said third receiving means being connected to said internal lock trans-receiver coil and to a means for stabilizing the static magnetic field,
• k. an adjustable transmitting means for supplying transmission coil with a nuclear resonance RF pulse intermittently so as to decouple a selected nucleus,
• l. a means for exclusively selecting the second nuclear resonance F.I.D. signal induced in said trans-receiver coil during the time when said transmission coil does not transmit an RF pulse,
• m. a means for Fourier transforming the output signal from said first or second receiving means,
• n. a means for displaying said Fourier transformed signals whereby the adjustable transmitting means may be adjusted until observation of decoupling of a selected nucleus on one Fourier transformed spectrum and then the other spectrum may be observed with the selected nucleus decoupled without change of apparatus conditions.

In a nuclear magnetic resonance apparatus for producing two types of spectrums the improvements comprising:

• a. a first trans-receiver coil arranged perpendicularly with respect to the static magnetic field H.sub.0,
• b. a second trans-receiver coil being interposed along a third axis perpendicular to both the static magnetic field H.sub.0 and said trans-receiver coil axes, said second trans-receiver coil being double tuned to the first and third nuclear resonance frequencies,
• c. a means for tuning said first trans-receiver coil to the first nuclear resonance frequency or a second nuclear resonance frequency;
• d. a transmitting means for supplying said first trans-receiver coil via said tuning means with a burst of a first or second nuclear resonance RF,
• e. a first receiving means for amplifying and detecting a first nuclear resonance F.I.D. signal induced in said first trans-receiver coil, said first receiving means being connected to said trans-receiver coil via said tuning means,
• f. a transmitting means for supplying said first trans-receiver coil via said tuning means with the second nuclear resonance RF pulse,
• g. a second receiving means for amplifying and detecting a second nuclear resonance F.I.D. signal induced in said first trans-receiver coil, said second receiving means being connected to said trans-receiver coil via said tuning means,
• h. a transmitting system for supplying said second trans-receiving coil with the third nuclear resonance RF,
• i. a third receiving means for amplifying and detecting a third nuclear resonance signal induced in said second trans-receiver coil, and third receiving means being connected to a means for stabilizing the static magnetic field,
• j. an adjustable transmitting means for supplying said second trans-receiver coil with the nuclear resonance RF burst intermittently so as to decouple a selected nucleus,
• l. a means for Fourier transforming the output signal from said first or second receiving means,
• m. a means for displaying said Fourier transformed signals whereby the adjustable transmitting means may be adjusted until observation of a selected nucleus on one Fourier transformed spectrum and then the other spectrum may be observed with the selected nucleus decoupled without change of apparatus conditions.

In a nuclear magnetic resonance apparatus for producing two types of spectrums the improvements comprising:

• a. a first trans-receiver coil arranged perpendicularly with respect to the static magnetic field H.sub.0, said first trans-receiver coil being double tuned to the first and second nuclear resonance frequencies,
• b. a second trans-receiver coil for an internal lock being interposed along a third axis perpendicular to both the static magnetic field H.sub.0 and said trans-receiver coil axis, said second trans-receiver coil being a third nuclear resonance frequency,
• c. a transmitting means for supplying said first trans-receiver coil via said tuning means with bursts of a first or second nuclear resonance RF,
• d. a first receiving means connected to said first trans-receiver coil for amplifying and detecting a first nuclear resonance F.I.D. signal induced in said first trans-receiver coil,
• e. a second transmitting means for supplying said first trans-receiver coil with a burst of a second nuclear resonance RF,
• f. a second receiving means connected to said first trans-receiver coil for amplifying and detecting a second nuclear resonance F.I.D. signal induced in said first trans-receiver coil said second receiving means being connected to said trans-receiver coil,
• g. a transmitting means for supplying said second trans-receiver coil with a burst of said third nuclear resonance RF,
• h. a third receiving means for amplifying and detecting a third nuclear resonance signal induced in said second trans-receiver coil, said third receiving means being connected to said internal lock trans-receiver coil and to a means for stabilizing the static magnetic field,
• i. an adjustable transmitting means for supplying said second trans-receiver coil with an intermittent RF burst to decouple a selected nucleus,
• j. a means for introducing and detecting the nuclear resonance F.I.D. signals induced in said first trans-receiver coil when the RF pulse for decoupling the selected nucleus is or is not applied,
• k. a means for Fourier transforming the output signal from said first or second receiving means,
• l. a means for displaying said Fourier transformed signals where by the adjustable transmitting means may be adjusted until observation of decoupling of a selected nucleus on one Fourier transformed spectrum and then the other spectrum may be observed with the selected nucleus decoupled without change of apparatus conditions.

In a nuclear magnetic resonance apparatus for producing two types of spectrums for improvements comprising:

• a. a trans-receiver coil arranged perpendicularly with respect to the static magnetic field H.sub.0,
• b. a transmission coil interposed along a third axis perpendicular to both the static magnetic field H.sub.0 and said trans-receiver coil axis,
• c. a means for double tuning said trans-receiver coil to first and third nuclear resonance frequencies or to second and third nuclear resonance frequencies,
• d. a transmitting means for supplying said trans-receiver coil or said transmission coil with a burst of the first nuclear resonance frequency RF via said double tuning means,
• e. a first receiving means for amplifying and detecting the first nuclear resonance F.I.D. signal induced in said trans-receiver coil and supplied via said double tuning means, said first receiving means being connected to said trans-receiver coil via said double tuning means,
• f. a transmitting means for supplying said trans-receiver coil with a burst of the second nuclear resonance RF via said double tuning means,
• g. a second receiving means for amplifying and detecting the second nuclear resonance F.I.D. signal induced in said trans-receiver coil and supplied via said double tuning means, said second receiving means being connected to said trans-receiver coil via said double tuning means,
• h. a transmitting means for supplying said trans-receiver coil with a burst of the third nuclear resonance RF,
• i. a third receiving means for amplifying and detecting the third nuclear resonance signal induced in said trans-receiver coil and supplied via said double tuning means, said third receiving means being connected to said trans-receiver coil and to a means for stabilizing the static magnetic field,
• j. an adjustable transmitting means for supplying said transmission coil with a burst of first nuclear resonance RF pulse intermittently,
• k. a means for Fourier transforming the output signal from said first or second receiving means,
• l. a means for displaying said Fourier transformed signals whereby the adjustable transmitting means may be adjusted until observation of decoupling of a selected nucleus on one Fourier transformed spectrum and then the other spectrum may be observed with the selected nucleus decoupled without change of apparatus conditions.