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US3680959A Expired / Lapsed US ⏱️ 0.0 years remaining

Spectrochemical analysis

Assignee: THERMO JARRELL ASH Corp WALTHAM MA A CORP OF
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Filing: 1963-02-25
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Granted: 1972-08-01
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Expires: 1983-02-25
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Abstract

Abstract 1. Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, MEANS FOR DIRECTING A COHERENT BEAM OF PHOTONS ONTO SAID SAMPLE WITH SUFFICIENT ENERGY TO DISLODGE A PORTION TO BE ANALYZED FROM THE SAMPLE, AND AUXILIARY MEANS FOR RAISING THE EXCITATION ENERGY OF THE DISLODGED PORTION SO PRODUCED TO CAUSE EMISSION, WITHIN A SPECTROSCOPICALLY EXAMINABLE FIELD, OF ELECTROMAGNETIC RADIATIONS CHARACTERISTIC OF CHEMICAL ELEMENTS PRESENT IN SAID DISLODGED PORTION.

Inventors

  • 👤 John A Schuch
  • 👤 Frederick Brech

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:26
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63

Claims Analysis

Total Claims: 26
Claim 1
Independent Claim 74 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, means for directing a coherent beam of photons onto said sample with sufficient energy to dislodge a portion to be analyzed from the sample, and auxiliary means for raising the excitation energy of the dislodged portion so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of chemical elements present in said dislodged portion.
Claim 2
Dependent Claim 74 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, means for directing a coherent beam of photons onto said sample with sufficient energy to dislodge a portion to be analyzed from the sample, and auxiliary means for raising the excitation energy of the dislodged portion so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of chemical elements present in said dislodged portion.
Claim 3
Dependent Claim 74 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, means for directing a coherent light beam onto said sample with sufficient energy to dislodge a portion of the sample to be analyzed, and auxiliary means for raising the excitation energy of the dislodged portion so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said vapor.
Claim 4
Dependent Claim 74 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, means for directing a coherent light beam onto said sample with sufficient energy to dislodge a portion of the sample to be analyzed, and auxiliary means for raising the excitation energy of the dislodged portion so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said vapor.
Claim 5
Dependent Claim 90 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, electrode means defining a gap adjacent said sample holder means, means to create an electric field across said gap, and means for directing a coherent beam of photons onto said sample with sufficient energy to eject a portion to be analyzed from the sample into said gap to cause breakdown of said electric field and cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of chemical elements present in said ejected portion.
Claim 6
Dependent Claim 90 words
Excitation apparatus useful in spectrochemical analysis comprising means for holding a sample to be spectrochemically analyzed, electrode means defining a gap adjacent said sample holder means, means to create an electric field across said gap, and means for directing a coherent beam of photons onto said sample with sufficient energy to eject a portion to be analyzed from the sample into said gap to cause breakdown of said electric field and cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of chemical elements present in said ejected portion.
Claim 7
Dependent Claim 87 words
Apparatus useful in spectrochemical analysis comprising a maser having its axis oriented to direct a coherent beam of photons onto a surface area of a sample to be spectrochemically analyzed with sufficient energy to cause emanation from such sample of a column of vaporized material, auxiliary means for raising the excitation energy of the vaporized material so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said vaporized material, and means for spectroscopically examining said radiations.
Claim 8
Dependent Claim 87 words
Apparatus useful in spectrochemical analysis comprising a maser having its axis oriented to direct a coherent beam of photons onto a surface area of a sample to be spectrochemically analyzed with sufficient energy to cause emanation from such sample of a column of vaporized material, auxiliary means for raising the excitation energy of the vaporized material so produced to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said vaporized material, and means for spectroscopically examining said radiations.
Claim 9
Dependent Claim 110 words
Apparatus useful in spectrochemical analysis comprising an optical maser having its axis oriented to direct a coherent light beam onto a surface area of a sample to be spectrochemically analyzed with sufficient energy to cause emanation from such sample of a column of vaporized material, a pair of spaced electrodes defining a gap therebetween which intersects the path of the vapor column so emanating from said sample, means for impressing an electric potential across said electrodes to raise the excitation energy of vapor emanating into said gap and cause emission therefrom of electromagnetic radiations characteristic of all the chemical elements in said vapor, and means for spectroscopically examining said radiations.
Claim 10
Dependent Claim 110 words
Apparatus useful in spectrochemical analysis comprising an optical maser having its axis oriented to direct a coherent light beam onto a surface area of a sample to be spectrochemically analyzed with sufficient energy to cause emanation from such sample of a column of vaporized material, a pair of spaced electrodes defining a gap therebetween which intersects the path of the vapor column so emanating from said sample, means for impressing an electric potential across said electrodes to raise the excitation energy of vapor emanating into said gap and cause emission therefrom of electromagnetic radiations characteristic of all the chemical elements in said vapor, and means for spectroscopically examining said radiations.
Claim 11
Dependent Claim 94 words
Spectrochemical analysis apparatus comprising a source of a coherent beam of photons, means for holding a sample of material to be analyzed, means for directing said beam of photons onto said sample with sufficient energy to raise chemical elements in the portion of the sample subjected to said beam of photons to at least dissociative energy levels, auxiliary means for raising chemical elements from dissociative energy levels to spectroemissive energy levels, and means for sensing a change in radiation due to the raised energy levels of said chemical elements in a spectrochemical analysis operation.
Claim 12
Dependent Claim 94 words
Spectrochemical analysis apparatus comprising a source of a coherent beam of photons, means for holding a sample of material to be analyzed, means for directing said beam of photons onto said sample with sufficient energy to raise chemical elements in the portion of the sample subjected to said beam of photons to at least dissociative energy levels, auxiliary means for raising chemical elements from dissociative energy levels to spectroemissive energy levels, and means for sensing a change in radiation due to the raised energy levels of said chemical elements in a spectrochemical analysis operation.
Claim 13
Dependent Claim 45 words
The spectrochemical apparatus as claimed in claim 6 wherein said photon beam directing means includes means for focusing said beam, and further including optical means including said focusing means for visually inspecting the particular portion of said sample on which said beam is to impinge.
Claim 14
Dependent Claim 113 words
The spectrochemical analysis apparatus as claimed in claim 6 wherein said auxiliary means includes a pair of spaced electrodes positioned between said source of photons and said sample holder, and means for establishing an electrostatic field between said electrodes having an energy potential sufficient to raise all the chemical elements in a vapor introduced between said electrodes to spectroemissive energy levels, said electrodes being positioned relative to said sample holder so that vapor emitted from the sample as a result of impingement of the coherent beam of photons on said sample disturbs the electric field sufficiently to cause an electrical breakdown between said electrodes and a resulting transfer of energy to said vapor.
Claim 15
Dependent Claim 131 words
Apparatus useful in spectrochemical analysis comprising a maser for generating a coherent beam of photons in a pulse of less than 100 microseconds duration, means for holding a sample of material to be analyzed, means for directing said beam of photons from said maser onto said sample with sufficient energy to raise all the chemical elements in a portion of the sample subjected to said beam of photons to at least dissociative energy levels to produce a column of vapor, and electric discharge means for subjecting the chemical elements in said column of vapor to supplemental excitation to raise said chemical elements in said column to spectroemissive energy levels to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said sample portion.
Claim 16
Dependent Claim 131 words
Apparatus useful in spectrochemical analysis comprising a maser for generating a coherent beam of photons in a pulse of less than 100 microseconds duration, means for holding a sample of material to be analyzed, means for directing said beam of photons from said maser onto said sample with sufficient energy to raise all the chemical elements in a portion of the sample subjected to said beam of photons to at least dissociative energy levels to produce a column of vapor, and electric discharge means for subjecting the chemical elements in said column of vapor to supplemental excitation to raise said chemical elements in said column to spectroemissive energy levels to cause emission, within a spectroscopically examinable field, of electromagnetic radiations characteristic of all the chemical elements present in said sample portion.
Claim 17
Dependent Claim 142 words
The spectrochemical analysis apparatus as claimed in claim 9 wherein said supplemental excitation means includes a pair of spaced electrodes positioned between said maser and said sample holder, said electrodes being positioned on opposite sides of the path of said beam of photons, electrical energy storage means connected in circuit with said electrodes, and means for energizing said electrical energy storage means to establish an electric field between said electrodes having an energy potential sufficient to raise the chemical elements in a vapor introduced between said electrodes to spectroemissive energy levels, said electrodes being positioned relative to said sample holder so that vapor emitted from the sample as a result of impingement of the coherent beam of photons on said sample disturbs the electric field sufficiently to cause an electrical breakdown between said electrodes and release of energy from said storage means.
Claim 18
Dependent Claim 47 words
The apparatus as claimed in claim 10 wherein said photon beam directing means includes means for focusing said beam on said sample, and further including optical means including said focusing means for visually inspecting the particular portion of said sample on which said beam is to impinge.
Claim 19
Dependent Claim 174 words
Apparatus useful in spectrochemical analysis comprising a maser for generating a coherent beam of photons, means for holding a sample of material to be analyzed, means for directing said beam of photons from said maser onto said sample with sufficient energy to eject a column of particles from a portion of the sample subjected to said beam of photons, a pair of spaced electrodes positioned between said maser and said sample holder, said electrodes being positioned on opposite sides of the path of said beam of photons, means for establishing an electrostatic field between said electrodes hAving an energy potential sufficient to raise all the chemical elements in said column introduced between said electrodes to spectroemissive energy levels, said electrodes being positioned relative to said sample holder so that the column ejected from the sample as a result of impingement of the coherent beam of photons on said sample disturbs the electric field sufficiently to cause an electrical breakdown between said electrodes, and means for spectroscopically examining radiations resulting from said spectroemissive energy levels.
Claim 20
Dependent Claim 174 words
Apparatus useful in spectrochemical analysis comprising a maser for generating a coherent beam of photons, means for holding a sample of material to be analyzed, means for directing said beam of photons from said maser onto said sample with sufficient energy to eject a column of particles from a portion of the sample subjected to said beam of photons, a pair of spaced electrodes positioned between said maser and said sample holder, said electrodes being positioned on opposite sides of the path of said beam of photons, means for establishing an electrostatic field between said electrodes hAving an energy potential sufficient to raise all the chemical elements in said column introduced between said electrodes to spectroemissive energy levels, said electrodes being positioned relative to said sample holder so that the column ejected from the sample as a result of impingement of the coherent beam of photons on said sample disturbs the electric field sufficiently to cause an electrical breakdown between said electrodes, and means for spectroscopically examining radiations resulting from said spectroemissive energy levels.
Claim 21
Independent Claim 63 words
A method of spectrochemical analysis comprising directing onto a surface of a material to be analyzed a coherent beam of photons having sufficient energy to cause emanation of a column of sample material, raising the energy level of the particles in said column to cause emission of electromagnetic radiations characteristic of all the chemical elements in said column, and spectroscopically examining said radiations.
Claim 22
Independent Claim 63 words
A method of spectrochemical analysis comprising directing onto a surface of a material to be analyzed a coherent beam of photons having sufficient energy to cause emanation of a column of sample material, raising the energy level of the particles in said column to cause emission of electromagnetic radiations characteristic of all the chemical elements in said column, and spectroscopically examining said radiations.
Claim 23
Independent Claim 77 words
A method of spectrochemical anlaysis of a minute sample of material comprising directing onto a surface of the material to be analyzed a coherent light pulse of less than 100 microseconds duration, said pulse having sufficient energy to cause emanation of a column of sample material, electrically raising the energy level of the particles in said column to cause emission of electromagnetic radiations characteristic of all the chemical elements in said column, and spectroscopically examining said radiations.
Claim 24
Independent Claim 77 words
A method of spectrochemical anlaysis of a minute sample of material comprising directing onto a surface of the material to be analyzed a coherent light pulse of less than 100 microseconds duration, said pulse having sufficient energy to cause emanation of a column of sample material, electrically raising the energy level of the particles in said column to cause emission of electromagnetic radiations characteristic of all the chemical elements in said column, and spectroscopically examining said radiations.
Claim 25
Independent Claim 66 words
A method of detecting a constituent element in a minute body within a sample of material comprising the steps of directing a beam of coherent waves of electromagnetic energy on said minute body, thereby causing a quantity of said minute body to be removed; exciting said quantity of said minute body sufficient to stimulate emission therefrom of electromagnetic energy having detectable characteristics; and detecting said characteristics.
Claim 26
Independent Claim 66 words
A method of detecting a constituent element in a minute body within a sample of material comprising the steps of directing a beam of coherent waves of electromagnetic energy on said minute body, thereby causing a quantity of said minute body to be removed; exciting said quantity of said minute body sufficient to stimulate emission therefrom of electromagnetic energy having detectable characteristics; and detecting said characteristics.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-01 1976-01-31 1976-08-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-01 1980-01-31 1980-08-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-01 1984-01-31 1984-08-01 $7700.00 Window Closed / Lapsed

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