Confined ion energy &amp;gt;200 keV and increased fusion yield in a DPF with monolithic tungsten electrodes and pre-ionization

Lerner, E. J.; Hassan, S. M.; Karamitsos, Ivana; Roessel, Fred Von

doi:10.1063/1.4989859

Cited by 15 publications

(14 citation statements)

References 24 publications

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“…A table showing frequency distribution of E i has been reported. In another series of experiments [140], the maximum E i is reported as 240 keV. b.…”

Section: Other Pf Devicesmentioning

confidence: 92%

“…(j) E.J. Lerner [140] suggested the minimum energy dissipation principle to explain filamentation phenomena. According to his opinion "A heated plasma moves into a cool plasma or neutral gas in a way that minimizes the total dissipation of energy.…”

Section: Figure 19mentioning

confidence: 99%

“…This is supporting evidence for the inference of an electric field directed towards the anode (see Section 4.3.1.3 C(1)) from PF-1000 data. (2) Lerner et al [95,140] have used neutron time of flight method to obtain the average ion energy E i of a plasma undergoing fusion using the following formula:…”

Section: Other Pf Devicesmentioning

confidence: 99%

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Update on the Scientific Status of the Plasma Focus

Auluck

Kubeš

Paduch

et al. 2021

Plasma

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This paper is a sequel to the 1998 review paper “Scientific status of the Dense Plasma Focus” with 16 authors belonging to 16 nations, whose initiative led to the establishment of the International Center for Dense Magnetized Plasmas (ICDMP) in the year 2000. Its focus is on understanding the principal defining characteristic features of the plasma focus in the light of the developments that have taken place in the last 20 years, in terms of new facilities, diagnostics, models, and insights. Although it is too soon to proclaim with certainty what the plasma focus phenomenon is, the results available to date conclusively indicate what it is demonstrably not. The review looks at the experimental data, cross-correlated across multiple diagnostics and multiple devices, to delineate the contours of an emerging narrative that is fascinatingly different from the standard narrative, which has guided the consensus in the plasma focus community for several decades, without invalidating it. It raises a question mark over the Fundamental Premise of Controlled Fusion Research, namely, that any fusion reaction having the character of a beam-target process must necessarily be more inefficient than a thermonuclear process with a confined thermal plasma at a suitably high temperature. Open questions that need attention of researchers are highlighted. A future course of action is suggested that individual plasma focus laboratories could adopt in order to positively influence the future growth of research in this field, to the general benefit of not only the controlled fusion research community but also the world at large.

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“…A table showing frequency distribution of E i has been reported. In another series of experiments [140], the maximum E i is reported as 240 keV. b.…”

Section: Other Pf Devicesmentioning

confidence: 92%

Section: Figure 19mentioning

confidence: 99%

See 1 more Smart Citation

Update on the Scientific Status of the Plasma Focus

Auluck

Kubeš

Paduch

et al. 2021

Plasma

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“…This company claims it is possible to make direct conversion of plasma energy to electric power, resulting in a very compact power generator, fitting in a garage and such fusion generators are projected to cut the cost of electricity by over 90%. In 2017, it published a paper reporting a neutron yield per shot of 1.6 e11 neutrons per shot by plasmoids lasting about 40 nano seconds [25]. As the resulting fusion products are ejected in the direction of the axis of the plasmoid [26], it becomes relatively easy to convert the kinetic energy of ions to electric power using a coil.…”

Section: Discussionmentioning

confidence: 99%

Novel Technological Developments with Impacts on Perspectives for Mobile Nuclear Power Plants

Freire¹,

Andrade²

2021

WJNST

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New research developments suggest that nuclear reactors using fusion may enter the market sooner than imagined even for mobile applications, like merchant ship propulsion and remote power generation. This article aims at pointing such developments and how they could affect nuclear fusion. The method is enumerating the main nuclear reactors concepts, identifying new technological or theoretical developments useful to nuclear field, and analysing how new recombination could affect feasibility of nuclear fusion. New technologies or experimental results do not always work the way people imagine, being better or worse for intended effects or even bringing completely unforeseen effects. Results point the following designs could be successful, in descending order of potential: aneutronic nuclear reactions using lattice confinement, aneutronic nuclear reactions using inertial along magnetic confinement, hybrid fission-lattice confinement fusion, and fission reactions.

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“…Again, the energy of the ion beam produced can be harnessed directly into electricity. The company recently reported having achieved an ion temperature of nearly three billion degrees [19] so, like TAE, it is aiming for hydrogen-boron fusion.…”

Section: Other Approachesmentioning

confidence: 99%

Alternatives to tokamaks: a faster-better-cheaper route to fusion energy?

Clery¹

2019

Phil. Trans. R. Soc. A.

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The use of thermonuclear fusion as a source for energy generation has been a goal of plasma physics for more than six decades. Its advantages are many: easy access to fuel and virtually unlimited supply; no production of greenhouse gases; and little radioactive waste produced. But heating fuel to the high temperature necessary for fusion—at least 100 million degrees Celsius—and containing it at that level has proved to be a difficult challenge. The ring-shaped magnetic confinement of tokamaks, which emerged in the 1960s, was quickly identified as the most promising approach and remains so today although a practical commercial reactor remains decades away. While tokamaks have rightly won most fusion research funding, other approaches have also been pursued at a lower level. Some, such as inertial confinement fusion, have emerged from nuclear weapons programs and others from academic efforts. A few have been spun out into start-up companies funded by venture capital and wealthy individuals. Although alternative approaches are less well studied, their proponents argue that they could provide a smaller, cheaper, and faster route to fusion energy production. This article will survey some of the current efforts and where they stand. This article is part of a discussion meeting issue ‘Fusion energy using tokamaks: can development be accelerated?’.

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Confined ion energy >200 keV and increased fusion yield in a DPF with monolithic tungsten electrodes and pre-ionization

Cited by 15 publications

References 24 publications

Update on the Scientific Status of the Plasma Focus

Update on the Scientific Status of the Plasma Focus

Novel Technological Developments with Impacts on Perspectives for Mobile Nuclear Power Plants

Alternatives to tokamaks: a faster-better-cheaper route to fusion energy?

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