Experimental Dependence of the Neutron Yield on the Discharge Current for Plasma Focus Chambers Filled with Deuterium and Deuterium–Tritium

Mikhailov, Yu. V.; Lemeshko, B. D.; Прокуратов, И. А.

doi:10.1134/s1063780x19030073

Cited by 9 publications

(2 citation statements)

References 34 publications

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“…They routinely generate neutrons with the energy of 2.5 MeV/14 MeV, X-rays ranging from 1-1000 keV, plasma jets, electron and ion beams, and electromagnetic pulses. The duration of neutron and X-ray pulses is in tens of nanoseconds [10,11].…”

Section: Introductionmentioning

confidence: 99%

X-ray 3D Imaging of Low-Density Laser-Target Materials

et al. 2023

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Achieving optimal design and precise control of the internal structure of laser-target materials are the primary objectives in various laser physics experiments, particularly in generating high flux photon and neutron beams. The study of low-density materials poses considerable challenges for X-ray analysis due to their high transparency and minimal contrast. In this study, to obtain clear visualization of foams with sparse structures, we used phase-contrast X-ray tomography, utilizing a high-quality monochromatic X-ray beam from the synchrotron radiation source PETRA-III at DESY. Employing phase-contrast algorithms, the 3D structure of a foam-suspended glass microsphere inside the plastic cylinder was reconstructed with a level of image quality sufficient to visualize uniformity, displacement, and surface roughness on both sides of the microsphere. The primary focus of this investigation was a CH plastic capillary including 10 mg/cc CHO foam with a glass microsphere positioned at the center. The results of this study demonstrate that phase-contrast X-ray tomography with coherent synchrotron radiation is an effective and valuable technique for the development of new laser targets containing structured low-density materials.

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Section: Introductionmentioning

confidence: 99%

X-ray 3D Imaging of Low-Density Laser-Target Materials

et al. 2023

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“…Dense plasma focus (DPF) is the simplest and least expensive source for producing a burst of neutrons in the short duration of a few tens of nanoseconds depending on the driver energy and other device parameters. For the purpose of neutron production, it is fueled either with pure deuterium (D 2 ) or a deuterium-tritium (DT) gas mixture [1]. The typical energy generated neutrons are ∼2.45 MeV with pure D 2 filling and ∼14.1 MeV with DT filling.…”

Section: Introductionmentioning

confidence: 99%

Development and performance characterization of a compact plasma focus based portable fast neutron generator

Verma

Mishra

Dhang

et al. 2020

Plasma Sci. Technol.

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The design details and performance characterization results of a newly developed plasma focus based compact and portable system (0.5 m×0.5 m×1.2 m, weighing ≈100 kg) that produces an average neutron yield of ∼2×10 8 neutrons/shot (of fast D-D neutrons with typical energy ∼2.45 MeV) at ∼1.8 kJ energy discharge are reported. From the detailed analysis of the experimental characterization and simulation results of this system, it has been conclusively revealed that specifically in plasma focus devices with larger static inductance: (i) pinch current is a reliable and more valid neutron yield scaling parameter than peak current, (ii) the ratio of pinch/peak current improves as static inductance of the system reduces, (iii) the benign role of the higher static/pinch inductance ratio enables the supply of inductively stored energy in densely pinched plasma with a larger time constant and it is well depicted by the extended dip observed in the discharge current trace, (iv) there is the need to redefine existing index values of the pinch (I pinch 4.7 ) and peak (I peak 3.9 ) currents in neutron yield scaling equations to higher values.

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Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

Klír

Jackson

Shishlov

et al. 2020

Matter and Radiation at Extremes

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Z-pinch experiments with a hybrid configuration of a deuterium gas puff have been carried out on the HAWK (NRL, Washington, DC) and GIT-12 (IHCE, Tomsk) pulsed power generators at 0.7 MA and 3 MA currents, respectively. On GIT-12, neutron yields reached an average value of 2 × 1012 neutrons, and deuterons were accelerated up to an energy of 30 MeV. This was 50 times the ion energy provided by the generator driving voltage of 0.6 MV and the highest energy observed in z-pinches and dense plasma foci. To confirm these unique results independently on another device, we performed several experimental campaigns on the HAWK generator. Comparison of the experiments on GIT-12 and HAWK helped us to understand which parameters are essential for optimized neutron production. Since the HAWK generator is of a similar pulsed power architecture as GIT-12, the experiments on GIT-12 and HAWK are important for the study of how charged-particle acceleration scales with the current.

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Experimental Dependence of the Neutron Yield on the Discharge Current for Plasma Focus Chambers Filled with Deuterium and Deuterium–Tritium

Cited by 9 publications

References 34 publications

X-ray 3D Imaging of Low-Density Laser-Target Materials

X-ray 3D Imaging of Low-Density Laser-Target Materials

Development and performance characterization of a compact plasma focus based portable fast neutron generator

Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

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