US 12,302,485 B2
High efficiency plasma creation system and method
Doron Weinfeld, Jerusalem (IL); Boaz Weinfeld, Jerusalem (IL); and Oded Gour Lavie, Ein Iron (IL)
Assigned to N.T. TAO LTD, Tel Aviv (IL)
Filed by N.T. TAO LTD., Tel Aviv (IL)
Filed on Nov. 8, 2023, as Appl. No. 18/387,942.
Application 18/387,942 is a continuation of application No. 17/773,819, granted, now 11,856,683, previously published as PCT/IL2021/051541, filed on Dec. 27, 2021.
Claims priority of application No. 281747 (IL), filed on Mar. 22, 2021.
Prior Publication US 2024/0074025 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H05H 1/04 (2006.01); H05H 1/16 (2006.01); H05H 1/22 (2006.01)
CPC H05H 1/04 (2013.01) [H05H 1/16 (2013.01); H05H 1/22 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for generation of a virtual cathode along the central axis of a cylindrical chamber and thereby stably confining plasma contained therein, comprising the steps of:
a. producing a vacuum in a cylindrical chamber;
b. injecting a gas into the cylindrical chamber;
c. applying a magnetic field about a portion of the cylindrical chamber;
d. applying an initial electric potential between at least one physical anode wherein at least one of the at least one physical anodes is configured around the central axis and proximal to a first distal end thereof and between a physical cathode configured on the central axis and at a second distal end thereby producing a generally radial initial electric field;
e. generating a plasma within the cylindrical chamber;
f. generating an axially symmetric region of plasma in which plasma movement around central axis in the presence of said magnetic field and said initial electric field produces a net negative charge and thus a virtual cathode and thus a secondary electric potential and thereby a secondary electric field; and
g. heating and further confining the plasma around the central axis, whereby a plasma is generated in a cylindrical chamber in which a magnetic field and an initial electric potential are also generated, and wherein a virtual cathode is generated thereby from region of plasma axially symmetric around the central axis, and wherein the plasma in the cylindrical chamber is further heated and confined by said virtual cathode, and wherein steps (d) and (e) can be taken in any order between steps (c) and (f).