Arc lamp with magnetic vortex anode

Claim 2

An improved short arc lamp enclosed in a glass tube enclosure having two ends therein for providing a generally elongated arc chamber, one end of the arc chamber containing a cathode and the other end of said arc chamber containing an anode for providing an arc current between the cathode and the anode wherein the improvement comprises: an elongated hollow section cylindrical anode closed at the end adjacent the cathode and open at the opposite end and having an enlarged axial passage that is only slightly smaller in diameter than the cathode and being centered along the arc lamp axis; and means including magnetic flux producing means within said anode for distributing heat of the arc current from said cathode along the surface of said axial passage.

Claim 3

An improved short arc lamp as set forth in claim 1 wherein said magnetic flux producing means includes a solid strap of conductive material wound within said elongated hollow section cylindrical anode leaving a passage between said strap and the shell of said anode.

Claim 4

An improved short arc lamp as set forth in claim 2 wherein said means further includes: a plurality of conductive entrance and exit pipes entering said anode through insulation in its open end for circulating a liquid coolant through said passage between said strap of conductive material and the shell of said anode for removing heat from said anode; one end of said strap of conductive material connected to the shell of said anode and the other end of said strap connected to one of said conductive pipes; and a power supply having its positive terminal connected to the one conductive pipe which said other end of strap is also connected and having its negative terminal connected to said cathode wherein said power supply causes electron arc current to flow from cathode to said anode thereby applying a negative voltage to the anode causing a heavy current to flow through the strap between the negatively charged anode to the positive terminal of said power supply thereby producing a large magnetic field perpendicular to the electron movement of the arc current causing vortical motion of the arc current and thereby distribution of said arc current along the surface of the axial passage.

Claim 5

An improved short arc lamp as set forth in claim 3 wherein said strap of conductive material is a copper sheet 30 mils thick and 38 millimeters wide that is wound four turns inside the hollow section of said cylindrical anode.

Claim 6

An improved short arc lamp as set forth in claim 4 wherein said axial passage is 11 millimeters in diameter, the outside diameter is 38 millimeters and the overall length is 46 millimeters when used with a cathode of 17 millimeters diameter with a truncated tip of said cathode positioned 16 millimeters from the end of the anode adjacent said cathode.