摘要:
A fusible target is embedded in a high Z liner, ohmically heated and then shock wave heated by implosion of an enveloping high Z liner. The target is adiabatically heated by compression, fusibly ignited and charged-particle heated as it is being ignited. A shock front forms as the liner implodes which shock front detaches from the more slowly moving liner, collides with the outer surface of the target, accelerates inward, rapidly heating the target, adiabatically compressing the target and liner and amplifying the current to converge the liner mass toward a central axis thereby compressing the target to a fusion condition when it begins to ignite and produce charged particles. The charged particles are trapped in a large magnetic field surrounding the target. The energy of the charged particles is deposited into the target to further heat the target to produce an energy gain.
摘要:
A high voltage pulse power generating circuit capable of providing energy recovery is disclosed. The energy efficient pulse generating circuit source comprises a high voltage charge storing element which is periodically discharged into a compressor circuit. An energy recovery circuit coupled to the compressor circuit reverses the polarity of energy dissipated by the pulse power generating circuit and transfers the waste energy back to the power source. In a preferred embodiment, the pulse power generating circuit of the present invention utilizes an SCR switch for periodically discharging the charge storing element. This embodiment of the present invention provides pulses consistently and will not provide even a single missed pulse.
摘要:
In a method of focusing a beam of charged particles by means of a magnetic field which is generated by a current flowing through a plasma volume contained by an insulating tube extending between two opposite annular electrodes which produce the current in a pulsed form, the insulating tube has, with respect to the cross-section of the particle beam which passes therethrough a diameter so selected that the tube wall is disposed adjacent the limit of the penetration depth of the magnetic field into the plasma as constricted solely by the magnetic field generated between the electrodes.
摘要:
A digital signal processor including a digital FIR filter and memory for storing filter coefficients operates at a reduced power level by using array multipliers that calculate partial products only when the partial products in a preceding row of the array have stabilized. The dynamic CMOS adder arrays in each multiplier are triggered to perform their evaluations only after predetermined time periods have elapsed, which are sufficient to permit the preceding row to stabilize. Coefficients are addressed from the memory using low-power addressing circuits, such as a Gray code counter or a one-bit wide circular shift register, so that the overall digital signal processor consumes a reduced amount of power during memory addressing.
摘要:
An injection system includes a reservoir for containing liquid, and a gating plate having a circular array of gating plate apertures. The injection system additionally includes a faceplate positioned adjacent to the gating plate and having a circular array of faceplate orifices. The injection system also has a motor to rotate the gating plate, and a controller to control the motor for rotating the gating plate into an aligned clocking orientation in which the gating plate apertures and the faceplate orifices are aligned to initiate the formation of a cylindrical array of liquid jets, and rotate the gating plate into a non-aligned clocking orientation terminate formation of the liquid jets after a predetermined discrete quantity of the liquid is injected.
摘要:
A configuration of two opposed electrodes with conical depressions and symmetry around an axis along which there is an applied steady magnetic field, is supplied with a pulsed voltage and current to create an azimuthally very uniform pre-ionization cylinder of a working gas as a precursor to stable and accurate compression of the working gas into a Z-pinch plasma photon source or plasma target for laser-pumped photon sources. A further compound hollow electrode configuration permits the generation of a cool, dense, core plasma surrounded and compressed by a hot liner plasma. Modulation of the radial density profile within this core can provide optical guiding for a laser-pumped recombination laser.
摘要:
An apparatus for generating EUV radiation is disclosed which may include a target material, a system generating a laser beam for interaction with the target material and a pair of electrodes. A pulse power electrical circuit may be provided for generating a discharge between said electrodes to produce EUV radiation from said target material.
摘要:
The present invention provides a reliable, high-repetition rate, production line compatible high energy photon source. A very hot plasma containing an active material is produced in vacuum chamber. The active material is an atomic element having an emission line within a desired extreme ultraviolet (EUV) range. A pulse power source comprising a charging capacitor and a magnetic compression circuit comprising a pulse transformer, provides electrical pulses having sufficient energy and electrical potential sufficient to produce the EUV light at an intermediate focus at rates in excess of 5 Watts. In preferred embodiments designed by Applicants in-band, EUV light energy at the intermediate focus is 45 Watts extendable to 105.8 Watts.
摘要:
A high energy photon source. A pair of plasma pinch electrodes are located in a vacuum chamber. The chamber contains a working gas which includes a noble buffer gas and an active gas chosen to provide a desired spectral line. A pulse power source provides electrical pulses at voltages high enough to create electrical discharges between the electrodes to produce very high temperature, high density plasma pinches in the working gas providing radiation at the spectral line of the source or active gas. Preferably the electrodes are configured co-axially with the anode on the axis. The anode is preferably hollow and the active gas is introduced through the anode. This permits an optimization of the spectral line source and a separate optimization of the buffer gas. Preferred embodiments present optimization of capacitance values, anode length and shape and preferred active gas delivery systems are disclosed. Preferred embodiments also include a pulse power system comprising a charging capacitor and a magnetic compression circuit comprising a pulse transformer. A heat pipe cooling system is described for cooling the central anode.
摘要:
In an apparatus for accelerating electrically charged particles from a pulsed plasma reservoir of high particle density in a dielectric tubular chamber which extends from the reservoir and is surrounded by at least two electrodes of which one is disposed at the wall of the reservoir, the dielectric tubular chamber is partially evacuated to a sufficiently low pressure p such that the product of the gas pressure p and the inner diameter d of the tubular chamber is low enough to avoid parasitic discharges in the residual gas charge, and a voltage is applied to the electrodes such that the particles are drawn into the dielectric tubular chamber with high flow density and are accelerated therein thereby forming a charged particle beam whereby the residual gas charge in the dielectric tubular chamber is ionized along the inside wall of the tubular chamber and polarized such that the wall of the dielectric tubular chamber becomes repulsive for the charged particle beam and its axis becomes attractive whereby the charged particle beam is electrostatically focussed and exits the dielectric tubular chamber with log losses.