US3711764A
Expired / Lapsed
US
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Noise excited resonance apparatus
Assignee: Varian Medical Systems Inc
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Filing: 1970-05-28
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Granted: 1973-01-16
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Expires: 1990-05-28
Abstract
Abstract Noise excited radio frequency spectrometers are disclosed wherein resonance of a sample of matter disposed in a polarizing magnetic field is excited by applying noise energy to the sample to excite a spectrum of resonance lines within the sample under analysis. In one embodiment, a sample of the exciting noise is Fourier transformed and a sample of the resultant noise excited spectrum of the sample is similarly Fourier transformed and the two Fourier transformed functions are multiplied to derive a resonance spectrum of the sample under analysis. In another embodiment, a sample of the resonance exciting noise signal is cross-correlated with a sample of the noise excited resonance signal derived from the sample to obtain a cross-correlation function which is Fourier transformed to obtain a resonance line spectrum of the sample under analysis.
Inventors
- 👤 R Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:40
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/389; G01R33/44; G01R33/46; G01R33/4616
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
In a noise excited nuclear and electron resonance apparatus, means for irradiating a sample of matter under investigation with a spectrum of noise energy having sufficient bandwidth to cover a plurality of resonance lines of the sample to be excited for exciting resonance of plural resonance lines of the sample simultaneously, means for receiving the simultaneously excited resonance lines signals emanating from the noise excited sample, means for correlating the resonance exciting noise energy with the noise excited resonance line signals to derive a crosscorrelation function, and means for Fourier analyzing the crosscorrelation function to obtain resonance line information concerning the sample under analysis.
Claim 2
Dependent Claim
104 words
In a noise excited nuclear and electron resonance apparatus, means for irradiating a sample of matter under investigation with a spectrum of noise energy having sufficient bandwidth to cover a plurality of resonance lines of the sample to be excited for exciting resonance of plural resonance lines of the sample simultaneously, means for receiving the simultaneously excited resonance lines signals emanating from the noise excited sample, means for correlating the resonance exciting noise energy with the noise excited resonance line signals to derive a crosscorrelation function, and means for Fourier analyzing the crosscorrelation function to obtain resonance line information concerning the sample under analysis.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 wherein said means for irradiating the sample with a spectrum of noise energy includes means for irradiating the sample with radio frequency energy which is modulated with noise energy.
Claim 4
Dependent Claim
49 words
The apparatus of claim 2 wherein the sample is disposed in a polarizing magnetic field and said means for irradiating the sample with noise energy includes, means for irradiating the sample with radio frequency energy, and means for modulating the intensity of the polarizing magnetic field with noise energy.
Claim 5
Dependent Claim
65 words
The apparatus of claim 3 wherein said means for correlating the resonance exciting noise energy with the noise excited energy resonance line siGnals comprises a plurality of channels for simultaneously multiplying said resonance line signals by different time-delayed representations of said resonance exciting noise, each said different time-delayed representation being multiplied by said resonance line signal in a separate one of said plurality of channels.
Claim 6
Dependent Claim
125 words
In a noise excited nuclear and electron resonance apparatus, means for applying a spectrum of noise energy to a sample of matter disposed in a polarizing magnetic field to excite simultaneously a spectrum of resonance lines within the sample under analysis, means for receiving the spectrum of resonance line signals simultaneously emanating from the sample, means for Fourier transforming a sample of the resonance exciting noise energy applied to the sample to derive an exciting noise transform function, and means for Fourier transforming the noise excited resonance line spectrum emanating from the sample to derive a resonance transform function, and means for complex multiplying the resonance exciting noise transform function by the resonance transform function to obtain resonance line information concerning the sample under analysis.
Claim 7
Dependent Claim
125 words
In a noise excited nuclear and electron resonance apparatus, means for applying a spectrum of noise energy to a sample of matter disposed in a polarizing magnetic field to excite simultaneously a spectrum of resonance lines within the sample under analysis, means for receiving the spectrum of resonance line signals simultaneously emanating from the sample, means for Fourier transforming a sample of the resonance exciting noise energy applied to the sample to derive an exciting noise transform function, and means for Fourier transforming the noise excited resonance line spectrum emanating from the sample to derive a resonance transform function, and means for complex multiplying the resonance exciting noise transform function by the resonance transform function to obtain resonance line information concerning the sample under analysis.
Claim 8
Dependent Claim
35 words
The apparatus according to claim 5 wherein said means for irradiating the sample with a spectrum of noise energy includes means for irradiating the sample with radio frequency energy which is modulated with noise energy.
Claim 9
Dependent Claim
50 words
The apparatus of claim 5 wherein the sample is disposed in a polarizing magnetic field, and said means for irradiating the sample with noise energy includes, means for irradiating the sample with radio frequency energy, and means for modulating the intensity of the polarizing magnetic field with the noise energy.
Claim 10
Dependent Claim
107 words
In a method for obtaining excited nuclear and electron resonance information from a sample under analysis the steps of, irradiating the sample under investigation with a spectrum of noise energy having a sufficient bandwidth to cover a plurality of the resonance lines of the sample to be excited for exciting resonance of plural resonance lines of the sample simultaneously, receiving the simultaneously excited resonance lines signals emanating from the noise excited sample, and correlating the resonance exciting noise energy with the noise excited resonance line signals to derive a cross-correlation function, and Fourier analyzing the cross-correlation function to obtain resonance line information concerning the sample under analysis.
Claim 11
Dependent Claim
107 words
In a method for obtaining excited nuclear and electron resonance information from a sample under analysis the steps of, irradiating the sample under investigation with a spectrum of noise energy having a sufficient bandwidth to cover a plurality of the resonance lines of the sample to be excited for exciting resonance of plural resonance lines of the sample simultaneously, receiving the simultaneously excited resonance lines signals emanating from the noise excited sample, and correlating the resonance exciting noise energy with the noise excited resonance line signals to derive a cross-correlation function, and Fourier analyzing the cross-correlation function to obtain resonance line information concerning the sample under analysis.
Claim 12
Dependent Claim
126 words
In a method for obtaining noise excited nuclear and electron resonance information from a sample under analysis the steps of, applying a spectrum of noise energy to the sample of matter disposed in a polarizing magnetic field to excite simultaneously a spectrum of resonance lines within the sample under analysis, receiving the spectrum of resonance line signals simultaneously emanating from the sample, Fourier transforming a sample of the resonance exciting noise energy applied to the sample to derive an exciting noise transform function, Fourier transforming the noise excited resonance line spectrum emanating from the sample to derive a resonance line transform function, and multiplying the resonance exciting noise transform function by the resonance line transform function to obtain resonance line information concerning the sample under analysis.
Claim 13
Dependent Claim
126 words
In a method for obtaining noise excited nuclear and electron resonance information from a sample under analysis the steps of, applying a spectrum of noise energy to the sample of matter disposed in a polarizing magnetic field to excite simultaneously a spectrum of resonance lines within the sample under analysis, receiving the spectrum of resonance line signals simultaneously emanating from the sample, Fourier transforming a sample of the resonance exciting noise energy applied to the sample to derive an exciting noise transform function, Fourier transforming the noise excited resonance line spectrum emanating from the sample to derive a resonance line transform function, and multiplying the resonance exciting noise transform function by the resonance line transform function to obtain resonance line information concerning the sample under analysis.
References Cited (Backward Citations)
US3287629A
Cited
US3461381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |