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Performance Impact of Ion Sources in Inertial Electrostatic Confinement Devices

2020
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Release : 2020
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Book Synopsis Performance Impact of Ion Sources in Inertial Electrostatic Confinement Devices by : Alexandru D. Calburean

Download or read book Performance Impact of Ion Sources in Inertial Electrostatic Confinement Devices written by Alexandru D. Calburean. This book was released on 2020. Available in PDF, EPUB and Kindle. Book excerpt: In order to improve the performance of Inertial Electrostatic Confinement (IEC) based fusion devices, so as to improve their effectiveness as low cost, portable neutron sources, a novel use of ion sources is proposed as a means of increasing fusion reaction rate at similar power levels. This paper aims to determine the success and practicality of the proposed use type for ion sources and characterize the IEC device in question, in terms of performance, and neutron emission. The application outlined aims to improve upon the performance of IEC devices with an anode layer ion source. The above-mentioned approach was evaluated by first conditioning the IEC fusion device in question. Then a neutron flux baseline was recorded as a metric for performance, and to evaluate the assumption of neutron emission isotropy in the device. Then an ion source was installed in the chamber, and the system was once again conditioned in the same manner. A similar baseline reading and analysis was done to ensure a correct comparison could be made between performance with the ion source turned on and off. Next the system was run with the ion source at full power to allow for further characterization of the performance and stability of the device. Finally, a last run was carried out with the ion source properly tuned, and results were compared to both baseline runs. It has been shown that there is a potential performance gain from operation with an ion source, both in terms of system stability and improved neutron emission. Across all run campaigns, the assumption of isotropic emission was shown to be a poor representation of the actual emission. With a higher degree of certainty, it has been shown that operation with an ion source serves to reliably exaggerate the anisotropy found in baseline campaigns.

Inertial Electrostatic Confinement (IEC) Fusion

2013-12-12 Technology & Engineering
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Release : 2013-12-12
Genre : Technology & Engineering
Kind : eBook
Book Rating : 382/5 ( reviews)

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Book Synopsis Inertial Electrostatic Confinement (IEC) Fusion by : George H. Miley

Download or read book Inertial Electrostatic Confinement (IEC) Fusion written by George H. Miley. This book was released on 2013-12-12. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with an introductory understanding of Inertial Electrostatic Confinement (IEC), a type of fusion meant to retain plasma using an electrostatic field. IEC provides a unique approach for plasma confinement, as it offers a number of spin-off applications, such as a small neutron source for Neutron Activity Analysis (NAA), that all work towards creating fusion power. The IEC has been identified in recent times as an ideal fusion power unit because of its ability to burn aneutronic fuels like p-B11 as a result of its non-Maxwellian plasma dominated by beam-like ions. This type of fusion also takes place in a simple mechanical structure small in size, which also contributes to its viability as a source of power. This book posits that the ability to study the physics of IEC in very small volume plasmas makes it possible to rapidly investigate a design to create a power-producing device on a much larger scale. Along with this hypothesis the book also includes a conceptual experiment proposed for demonstrating breakeven conditions for using p-B11 in a hydrogen plasma simulation. This book also: Offers an in-depth look, from introductory basics to experimental simulation, of Inertial Electrostatic Confinement, an emerging method for generating fusion power Discusses how the Inertial Electrostatic Confinement method can be applied to other applications besides fusion through theoretical experiments in the text Details the study of the physics of Inertial Electrostatic Confinement in small-volume plasmas and suggests that their rapid reproduction could lead to the creation of a large-scale power-producing device Perfect for researchers and students working with nuclear fusion, Inertial Electrostatic Confinement (IEC) Fusion: Fundamentals and Applications also offers the current experimental status of IEC research, details supporting theories in the field and introduces other potential applications that stem from IEC.

Atomic Processes in Inertial Electrostatic Confinement (IEC) Devices

1993
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Release : 1993
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Book Synopsis Atomic Processes in Inertial Electrostatic Confinement (IEC) Devices by :

Download or read book Atomic Processes in Inertial Electrostatic Confinement (IEC) Devices written by . This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt: Inertial Electrostatic Confinement (IEC) is one of the earliest plasma confinement concepts, having first been suggested by P.T. Farnsworth in the 1950s. The concept involves a simple apparatus of concentric spherical electrostatic grids or a combination of grids and magnetic fields. An electrostatic structure is formed from the confluence of electron or ion beams. Gridded IEC systems have demonstrated neutron yields as high as 2*101° neutrons/sec. These systems have considerable potential as small, inexpensive, portable neutron sources for assaying applications. Neutron tomography is also a potential application. Atomic physics effects strongly influence the performance of all of these systems. Important atomic effects include elastic scattering, ionization, excitation, and charge exchange. This paper discusses how an IEC system is influenced by these effects and how to design around them. Theoretical modeling and experimental results are presented.

Inertial Electrostatic Confinement

2007 Electronic dissertations
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Release : 2007
Genre : Electronic dissertations
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Book Synopsis Inertial Electrostatic Confinement by : Ryan Meyer

Download or read book Inertial Electrostatic Confinement written by Ryan Meyer. This book was released on 2007. Available in PDF, EPUB and Kindle. Book excerpt: Inertial Electrostatic Confinement (IEC) is a means to confine ions for fusion purposes with electrostatic fields in a converging geometry. Its engineering simplicity makes it appealing when compared to magnetic confinement devices. It is hoped that such a device may one day be a net energy producer, but it has near term applications as a neutron generator. We study spherical IECs (SIECs), both theoretically and experimentally. Theoretically, we compute solutions in the free molecular limit and map out regions in control parameter space conducive to the formation of double potential wells. In addition, several other observables are mapped in the control parameter space. Such studies predict the threshold for the phenomena of "core splitting" to occur when the fractional well depth (FWD) is ~70%-80%. With respect to double potential wells, it is shown that an optimal population of electrons exists for double well formation. In addition, double well depth is relatively insensitive to space charge spreading of ion beams. Glow discharge devices are studied experimentally with double and single Langmuir probes. The postulated micro-channeling phenomenon is verified with density measurements along a micro-channel and along the radius where micro-channels are absent. In addition, the measurements allow an evaluation of the neutrality of micro-channels and the heterogeneous structure of "Star Mode". It is shown that, despite visual evidence, micro-channeling persists well into "Jet" mode. In addition, the threshold for the "Star" mode to "Jet" mode transition is obtained experimentally. The studies have revealed new techniques for estimating tangential electric field components and studying the focusing of ion flow.

Effect of Large Ion Angular Momentum Spread and High Current on Inertial Electrostatic Confinement Potential Structures

1996
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Release : 1996
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Book Synopsis Effect of Large Ion Angular Momentum Spread and High Current on Inertial Electrostatic Confinement Potential Structures by : Ivon Virgilova Tzonev

Download or read book Effect of Large Ion Angular Momentum Spread and High Current on Inertial Electrostatic Confinement Potential Structures written by Ivon Virgilova Tzonev. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt:

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