Apparatus for generating an electric field
First Claim
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1. Apparatus for generating an electric field within a region, said apparatus comprising:
- an electrode assembly including a plurality of elongated electrodes disposed with their elongated axes substantially parallel to one another, substantially equidistantly from and angularly displaced from one another around a common axis so as to define said region; and
means for applying to said electrodes a harmonically varying, multi-phase potential so that the potential at each electrode is phase dependent and the phase of the potential at each electrode is a function of the relative angular position of that electrode so as to approximate a uniform electric field within said region.
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Abstract
Apparatus for generating with AC excitation, a substantially uniform electric field within a predetermined volume, typically in a region of a gas discharge device. The apparatus comprises an electrode assembly including a plurality of elongated electrodes disposed, equidistantly from one another and angularly displaced around a common axis so as to define the region of discharge. An approximately uniform discharge field is created within the discharge region by applying a harmonically varying potential to the electrodes, the phase of the applied potential at each electrode being a function of the relative angular position of that electrode.
9 Citations
33 Claims
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1. Apparatus for generating an electric field within a region, said apparatus comprising:
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an electrode assembly including a plurality of elongated electrodes disposed with their elongated axes substantially parallel to one another, substantially equidistantly from and angularly displaced from one another around a common axis so as to define said region; and means for applying to said electrodes a harmonically varying, multi-phase potential so that the potential at each electrode is phase dependent and the phase of the potential at each electrode is a function of the relative angular position of that electrode so as to approximate a uniform electric field within said region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. In a gas laser having a resonant optical cavity having an optical axis and optically reflective elements disposed at opposite ends of said cavity along said axis, one of said elements being partially optically transmissive a laser-active gas medium disposed within said cavity, the improvement comprising:
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an electrode assembly for creating a discharge field within said cavity, said assembly including a plurality of elongated electrodes disposed substantially parallel to said axis, wherein said electrodes are equidistantly spaced from and angularly displaced around said axis; and means for applying a harmonically varying, multi-phase potential to said electrodes so that the potential at each electrode is phase dependent and the relative phase of the potential applied to each of said electrodes is a function of the relative angular position of each of said electrodes. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification