Fusion reactions from &amp;gt;150 keV ions in a dense plasma focus plasmoid

Lerner, E. J.; Murali, S. Krupakar; Shannon, Derek; Blake, Aaron M.; Roessel, Fred Van

doi:10.1063/1.3694746

Cited by 29 publications

(30 citation statements)

References 18 publications

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“…C. Labaune et al also have showed p-B laser fusion reactions in a two-laser beam system, where laser-accelerated proton beams hit a laser-produced boron plasma [2]. The produced plasma number density is 10 26 m −3 , whose value is higher than previous result [1].…”

Section: Introductioncontrasting

confidence: 51%

“…E. Lerner et al have showed D-D focus fusion reactions from deuterium ions with energies of more than 150 keV in a DPF device (its experiment is called FF-1) [1]. Plasmoids (high dense plasma regions) with number densities ∼ 3 × 10 25 m −3 were observed.…”

Section: Introductionmentioning

confidence: 99%

“…Plasmoids associated with sausage and kink instability were observed [1], but the detailed physics is unknown. Here we will show the formation of very dense plasmas and the stability of pinched current filament by using 2-D PIC codes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

2-D Particle-In-Cell Simulations of the Coalescence of Sixteen Current Filaments in Plasmas

Iwata

Haruki

Sato

2014

Plasma and Fusion Research

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A dense plasma focus device can produce dense and high energy plasma in a short time. Recently, it has been proposed that the device could be applied to fusion for clean energy production (focus fusion). In order to understand the behavior of the plasma current filaments in the device, two-dimensional, relativistic, fully electromagnetic, particle-in-cell simulations were performed. Sixteen plasma current filaments were initially located on the edge of a circle in our model. They begin to interact with each other while pinching, and then coalesce in the vicinity of the center of system. In the pinch phase (during the coalescence), there appears dense plasma, whose maximum number density is 10 times larger than the initial value. The ions are accelerated, but the rate of the number of them is somewhat small. After that, the current becomes unstable and jumps out from the center. These results are useful for understanding the coalescence process of current filaments.

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Section: Introductioncontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

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2-D Particle-In-Cell Simulations of the Coalescence of Sixteen Current Filaments in Plasmas

Iwata

Haruki

Sato

2014

Plasma and Fusion Research

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“…The PF devices can also generate pulsed X-rays, relativistic electron beams and relatively high-energy (up to several MeVs) pulsed ion beams [1][2][3][4]. Although the produced ions are generally emitted within the z-direction of the PF device, there have been reported wide-angle angular distributions of ions [5][6][7][8].…”

Section: Introductionmentioning

confidence: 98%

Design and Fabrication of a Data Acquisition System for Pulsed Neutron Flux Measurement of Plasma Focus Devices

et al. 2014

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Silver-activated Geiger counters together with a polyethylene layer as neutron moderator are frequently used in pulsed neutron flux measurements in research studies with plasma focus (PF) devices. In this study, an array of seven counters was used at seven different angles (0°, ±30°, ±60°a nd ±90°) to the PF-axis for which a software and a 10-channel data acquisition hardware (PCT2660) compatible with NIM standards have been designed and fabricated. In the proposed PCT2660, the preset timing algorithms are considered as general and they can be programmed for required detector calibrations and neutron flux measurements. The calibration constant measurement has been undertaken with a 16.5 Ci Am-Be source of 35 mm diameter by 70 mm cylindrical active volume located at anode top whilst the neutron flux at zero degree of PF device axis at 13.5 kV operating voltage and 13.54 9 10 -2 PSI pressure is measured as (2.88 ± 0.29) 9 10 8 neutrons per shot. Accordingly, the studies on the angular distribution of the PF neutron emission within the pressure range of 7.73 9 10 -2 -15.47 9 10 -2 PSI confirm an anisotropy ranging from 1.53 ± 0.09 to 2.95 ± 0.24 and a symmetry of angular distribution around the anode axis.

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“…Besides the formation and acceleration of the current sheath, the discreet characters of dense and hot pinched plasma and consequently the formation of hot spots (plasmoides) in PFs is encouraging, particularly for their use in nuclear fusion of the hydrogen-boron fuel [15,16]. Usually the final temperature and density of the focused plasma in PFs are 1 keV and 10 19 /cm 3 [17] however, the accurate mechanism in the formation of the dense structure in PFs is a challenging issue which still is an open area for more research.…”

Section: Introductionmentioning

confidence: 98%

Preliminary Results of the 115 kJ Dense Plasma Focus Device IR-MPF-100

et al. 2012

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This work summarizes the design and construction of the first Iranian 115 kJ Mather type plasma focus (PF) machine (IR-MPF-100). This machine consists of a 6.25 cm radius and 22 cm height brass made anode with a 50 mm height insulator which separates the anode and cathode electrodes. Twelve copper made 22 cm height rods play the role of cathode with 10.2 cm radius. Twenty four 6 lF capacitors were used with the maximum charging voltage of 40 kV (maximum energy of 115 kJ) as the capacitor bank and maximum theoretical current around 1.224 MA. The total inductance of the system is 120 nH. By using NE-102 plastic Scintillator, Rogowski coil, current and voltage probes, hard X-ray, current derivative, current and voltage signals of IR-MPF-100 were measured. The primary result of neutron detection by neutron activation counter represents approximately 10 9 neutrons per shot at 65 kJ discharge energy while using deuterium filling gas. Also IR-MPF-100 PF has been tested successfully at 90 kJ by using the argon gas.

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Fusion reactions from >150 keV ions in a dense plasma focus plasmoid

Cited by 29 publications

References 18 publications

2-D Particle-In-Cell Simulations of the Coalescence of Sixteen Current Filaments in Plasmas

2-D Particle-In-Cell Simulations of the Coalescence of Sixteen Current Filaments in Plasmas

Design and Fabrication of a Data Acquisition System for Pulsed Neutron Flux Measurement of Plasma Focus Devices

Preliminary Results of the 115 kJ Dense Plasma Focus Device IR-MPF-100

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