Electron discharge device including hollow cathode element for combined emission of spectral radiation and resonance detection
Abstract
Abstract THE INVENTION RELATES TO A SPECTRAL RADIATION SYSTEM INCLUDING AN ELECTRON DISCHARGE DEVICE HAVING AN ANODE ELEMENT AND A CATHODE ELEMENT FOR EMITTING A BEAM OF SPECTRAL RADIATION, A SUITABLE LENS FOR FOCUSSING THE SPECTRAL RADIATION THROUGH A SUITABLE DEVICE SUCH AS A BURNER FOR DISASSOCIATING THE ATOMS OF THE SAMPLE MATERIAL TO BE ANALYZED INTO GROUND STATE ATOMS, AND A SUITABLE REFLECTING DEVICE FOR REDIRECTING THE INTERRUPTED BEAM OF SPECTRAL RADIATION BACK THROUGH THE BURNER AND THE LENS TO BE FOCUSED ONTO A REGION IN FRONT OF THE HOLLOW PORTION OF THE CATHODE ELEMENT. THE REGION IN FRONT OF THE HOLLOW PORTION IS FILLED WITH GROUND STATE ATOMS WHICH TEND TO FLUORESCE AND YIELD RESONANCE RADIATION WHICH IS SENSED BY A SUITABLE RADIATION SENSITIVE DEVICE.
Inventors
- 👤 John D Johnson
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |