Plasma-filled diode in the electron accelerator on base of a pulsed linear transformer

Kovalchuk, B. M.; Zherlitsyn, A. A.; Pedin, N. N.

doi:10.1017/s0263034610000601

Cited by 13 publications

(7 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several plasma-filled diode experiments, e.g. [74], even have geometry and results similar to ours. The main differences seem to be higher plasma and current densities in our experiment.…”

Section: Ion Acceleration In Collisionless Gapsupporting

confidence: 83%

“…Interestingly, similar ion pinhole images were observed in pinched-beam diodes (see figure 7 in [76]). The ring-like structures were also observed in the electron beam imprint in a plasma-filled diode [74]. The latter experiment suggests that the circular ion source might be connected with the electron flow at the anode.…”

Section: Ion Acceleration In Collisionless Gapmentioning

confidence: 63%

“…This impedance and the significant current drop mean that 30 MV voltages can be generated by our z-pinch if the transition from a collisional current in unstable plasmas to a beam current in a collisionless gap occurs. Such dynamics is actually analogous to the main principle of plasma-filled diodes and plasma-opening switches where the gap formation in plasma is used for power and voltage multiplication [72][73][74]. Several plasma-filled diode experiments, e.g.…”

Section: Ion Acceleration In Collisionless Gapmentioning

confidence: 93%

See 2 more Smart Citations

Ion acceleration mechanism in mega-ampere gas-puff z-pinches

et al. 2018

View full text Add to dashboard Cite

Acceleration of high energy ions was observed in z-pinches and dense plasma foci as early as the 1950s. Even though many theories have been suggested, the ion acceleration mechanism remains a source of controversy. Recently, the experiments on the GIT-12 generator demonstrated acceleration of ions up to 30 MeV from a deuterium gas-puff z-pinch. High deuteron energies enable us to obtain unique information about spatial, spectral and temporal properties of accelerated ions. In particular, the offaxis ion emission from concentric circles of a ∼1 cm diameter and the radial lines in an ion beam profile are germane for the discussion of acceleration mechanisms. The acceleration of 30 MeV deuterons can be explained by the fast increase of an impedance with a sub-nanosecond e-folding time. The high (>10 Ω) impedance is attributed to a space-charge limited flow after the effective ejection of plasmas from m=0 constrictions. Detailed knowledge of the ion acceleration mechanism is used with a neutron-producing catcher to increase neutron yields above 10 13 at a currentof2.7 MA.

show abstract

“…Several plasma-filled diode experiments, e.g. [74], even have geometry and results similar to ours. The main differences seem to be higher plasma and current densities in our experiment.…”

Section: Ion Acceleration In Collisionless Gapsupporting

confidence: 83%

Section: Ion Acceleration In Collisionless Gapmentioning

confidence: 63%

Section: Ion Acceleration In Collisionless Gapmentioning

confidence: 93%

See 1 more Smart Citation

Ion acceleration mechanism in mega-ampere gas-puff z-pinches

et al. 2018

View full text Add to dashboard Cite

show abstract

“…As a result, the design can be simplified considerably, and the size and the cost of the electron accelerator can be reduced. Such an approach was tested in [13]. A plasma-filled diode with a single plasma channel of diameter 1 cm ensured a current of about 100 kA at the low-resistance phase with a rise time up to 150 ns.…”

Section: Introductionmentioning

confidence: 99%

Power Increase of the Electron Source Based on the Plasma-Filled Diode

Zherlitsyn

Kovalchuk

Pedin

2015

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

The technique of a linear transformer driver (LTD) now allows building the generators of high-power nanosecond pulses with the current rise time of ∼100 ns without intermediate power compression stages. This technique is being examined for use in high-current high-voltage electron sources based on plasma-filled diodes. The power of a plasma-filled diode is determined by the driving circuit parameters and the transition diode resistance. The problem of power rise can be solved by increasing the stored energy in the circuit inductance provided that the diode resistance rise rate is constant. In experiments on the LTD (53 nF, 480 kV), the possibility has been checked out for such increase in the stored energy. A current increase from 50 to 180 kA was obtained by increasing the current rise rate from 0.4 to 1.9 kA/ns. Stored energy has been increased, respectively, from 0.2 to 3.6 kJ. The time of energy transfer into the circuit inductance was about 120-140 ns. Maintaining the diode resistance rise rate at 0.5 /ns has been shown. Diode power has been increased up to 170 GW. Further increase in power of the plasma-filled diode has been obtained using simulation circuit of the Megavolt (MV) range LTD. To simulate such a linear transformer, the driver circuit was made as Marx generator with coaxial water line (5.3 , 56 ns, and 1.5 MV), providing a current input of 160 kA into the 550-nH inductance in 120 ns. Stored energy in the inductance was about 7 kJ. The following diode parameters were obtained: 150 kA, 1.9 MV, and 250 GW at a resistance rise rate more than 0.5 /ns. The experiments prove that the resistance rise rate of the plasma-filled diode is constant on increasing the stored energy in the inductance up to 7 kJ. It allows scaling the power of an electron source based on the plasma-filled diode.

show abstract

“…The experiments we had carried out confirmed the possibility of realization of a high-power electron source based on the linear transformer and plasma-filled diode. 4 Maximum output voltage and power were obtained with a plasma channel of a small diameter of ≈10 mm. A plasma gun analogous to the one used in microsecond plasma opening switch [Ref.…”

Section: Introductionmentioning

confidence: 99%

Plasma-filled diode based on the coaxial gun

Zherlitsyn

Kovalchuk

Pedin

2012

Review of Scientific Instruments

View full text Add to dashboard Cite

The paper presents the results of studies of a coaxial gun for a plasma-filled electron diode. Effects of the discharge channel diameter and gun current on characteristics of the plasma and pulse generated in the diode were investigated. The electron beam with maximum energy of ≥1 MeV at the current of ≈100 kA was obtained in the experiments with a plasma-filled diode. The energy of ≈5 kJ with the peak power of ≥100 GW dissipated in the diode.

show abstract

Plasma-filled diode in the electron accelerator on base of a pulsed linear transformer

Cited by 13 publications

References 8 publications

Ion acceleration mechanism in mega-ampere gas-puff z-pinches

Ion acceleration mechanism in mega-ampere gas-puff z-pinches

Power Increase of the Electron Source Based on the Plasma-Filled Diode

Plasma-filled diode based on the coaxial gun

Contact Info

Product

Resources

About