Charged particle generation with a resonant electrical circuit

Apparatus for generating a stream of charged particles, the apparatus comprising a pair of resonant circuits, a first of which has a source of first charged particles connected in series and the second of which has a target connected in parallel, wherein parts of the first and second resonant circuits are in common, and wherein the source and target are relatively juxtaposed such that under working conditions, when the circuits are in resonance, electric current passing through the source causes emission of first charged particles and the potential difference between the source and the target accelerates the first charged particles towards the target.

Apparatus for generating a stream of charged particles, the apparatus comprising a charged particle source and target connected in respective electrical circuits, each circuit including a respective secondary coil or antenna of a common transformer having a primary coil or antenna loosely coupled to each secondary coil or antenna, the source and target being relatively juxtaposed such that under working conditions, electric current induced in the circuit including the charged particle source causes the source to emit first charged particles and the potential difference between the source and the target accelerates the first charged particles towards the target, said target being composed of more than one material and one material of the target facing the source and being of a relatively higher work function (lower emission characteristics) such as tantalum, while the other material is of lower work function (higher emission characteristics) such as lanthanum hexaboride.

A particle accelerating device including apparatus for generating a stream of charged particles, the apparatus comprising a charged particle source and a target connected respectively in series with and parallel to a resonant electrical circuit and relatively juxtaposed such that under working conditions, when the circuit is in resonance, electric current passing through the source causes emission of first charged particles and the potential difference between the source and the target accelerates the first charged particles towards the target, wherein the target comprises a source of charged particles, the device further including means for accelerating said particles generated by said target.

A particle accelerating device including apparatus for generating a stream of charged particles, the apparatus comprising a pair of resonant circuits, a first of which has a source of first charged particles connected in series and the second of which has a target connected in parallel, wherein parts of the first and second resonant circuits are in common, and wherein the source and target are relatively juxtaposed such that under working conditions, when the circuits are in resonance, electric current passing through the source causes emission of first charged particles and the potential difference between the source and the target accelerates the first charged particles towards the target, wherein the target electrode comprises a source of charged particles, the device further including means for accelerating the particles.

A particle accelerating device including apparatus for generating a stream of charged particles, the apparatus comprising a charged particle source and a target connected in respective electrical circuits, each circuit including a respective secondary coil or antenna of a common transformer having a primary coil or antenna loosely coupled to each secondary coil or antenna, the source and target being relatively juxtaposed such that under working conditions, electric current induced in the circuit including the charged particle source causes the source to emit first charged particles and the potential difference between the source and the target accelerates the first charged particles towards the target, wherin the target defines a source of changed particles, the device further including means for accelerating the particles.