Patent US3846639A successfully refreshed from Google Patents.
Patent US3677890A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3677890A Expired / Lapsed US ⏱️ 0.0 years remaining

Plasma heating and densification in axisymmetric toroidal plasma confinement devices

Assignee: United States Atomic Energy Commission
•
Filing: 1971-04-23
•
Granted: 1972-07-18
•
Expires: 1991-04-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A TWO-STAGE PROCESS AND APPARATUS FOR GENERATING AND CONFINING A HOT, DENSE PLASMA FOR ACHIEVING CONTROLLED THERMONUCLEAR FUSION IN AN AXISYMMETRIC TOROIDAL CONFINEMENT DEVICE BY FIRST TRAPPING AN ELECTRON PLASMA IN A CLOSED MINIMUM-(B) MAGNETIC MIRROR CONFINING FIELD REGION OF THE DEVICE AND RAISING SOME TO RELATIVISTIC TEMPERATURES BY ELECTRON-CYCLOTRON RESONANCE MICROWAVE HEATING, AND THEREAFTER INJECTING A COLD DENSE PULSE OF NEUTRAL GASEOUS THERMONUCLEAR FUEL INTO THE CONFINING FIELD REGION FOR INTERACTION WITH THE HOT ELECTRONS THEREIN IN A COLLISIONAL HEAT TRANSFER MODE PRODUCTIVE OF ION HEATING TO MULTIKEY, TEMPERATURE WITH A VERY HIGH PLASMA DENSITY OF THE ORDER OF 10**13/CM.3 TO 10**14/CM.3.

Inventors

  • 👤 Charles W Hartman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 11:43
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/02; H05H1/16; H05H1/18; Y; Y02; Y02E; Y02E30/00; Y02E30/10

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

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) 1975-07-18 1976-01-17 1976-07-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-18 1980-01-17 1980-07-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-18 1984-01-17 1984-07-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag