Fusion reactivity characterization of a spherically convergent ion focus

Thorson, T.; Durst, R.; Fonck, R. J.; Sontag, A. C.

doi:10.1088/0029-5515/38/4/302

Cited by 56 publications

(32 citation statements)

References 28 publications

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“…It is noticed from the literature that almost all IECF experiments are operated at significant background neutral pressure so that most of the fusion reaction occurs between the ion beam and background neutrals [3,23]. Moreover, it is seen from the experiment [3] that NPR increases by increasing the background gas pressure upto a certain value and subsequently it decreases with further increase.…”

Section: Neutron Production Ratementioning

confidence: 99%

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Design of a linear neutron source

Buzarbaruah

Dutta

Bhardwaz

et al. 2015

Fusion Engineering and Design

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Section: Neutron Production Ratementioning

confidence: 99%

“…For improvement of fusion working conditions and the products obtained due to consequent reactions, additional arrangements such as electrostatic charged particle trap, ion guns, external magnetic field, etc. have been employed in some cases [2,3].…”

Section: Introductionmentioning

confidence: 99%

Design of a linear neutron source

Buzarbaruah

Dutta

Bhardwaz

et al. 2015

Fusion Engineering and Design

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“…However, this contribution only becomes effective at the low-gas-pressure region (P < 0:1 Pa), 6) so that the NPR by the beam-cathode collisions is ignored.…”

Section: Effect Of the Acceleration Voltage On The Nprmentioning

confidence: 99%

“…The fusion interaction results from various collisions including beam-background, fast neutral-background, beam-cathode, and beam-beam collsions. 6) Here, beam refers to ions accelerated by the potential well, background refers to gas molecules, fast neutral indicates fast neutral atoms or molecules produced by a charge exchange interaction between the ions and gas, and cathode indicates fuel atoms trapped near the cathode surface.…”

Section: Introductionmentioning

confidence: 99%

Effects of Grid Cathode Structure on a Low-Input-Power Inertial Electrostatic Confinement Fusion Device

Taniuchi

Matsumura

Taira

et al. 2010

Journal of Nuclear Science and Technology

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The effects of grid cathode structure on a low-input-power inertial electrostatic confinement fusion (IECF) device were studied to achieve a high neutron production rate (NPR). An increase in geometric transparency of the grid cathode by decreasing the number of wire rings is known to mean that the recirculation ion current is increased. We expected that this increase would contribute to an increase in the NPR. However, our experimental results showed that the NPR in the low-input-power IECF device (V ¼ 10:0{30:0 kV, I ¼ 40:0 mA) increased by decreasing the transparency. We clarified this tendency by analyzing the equipotential lines near the grid. As a result, we found that the distortion of these lines near the grid was lessened by decreasing the transparency. Lessening the distortion of these lines, rather than increasing the in recirculation ion current, was effective in increasing the NPR in the low-input-power IECF device. In addition, we find that the effect of mitigating these lines depended on the applied voltage.

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“…[1][2][3][4] Though this device has been known for over four decades, little was done after 1975 and until the early 1990s. [5][6][7] Several different versions of this concept are currently under investigation at various research institutes around the world. [8][9][10] This device has been investigated using several different diagnostics, 11,12 but is not yet completely understood.…”

Section: Introductionmentioning

confidence: 99%

Study of fusion regimes in an inertial electrostatic confinement device using the new eclipse disk diagnostic

et al. 2006

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New diagnostics are required to understand the physics operation of an inertial electrostatic confinement ͑IEC͒ device. In an attempt to understand the fusion source regimes within the IEC device, a new diagnostic called the eclipse disk has been introduced. This diagnostic was used to exploit the byproduct protons' energy difference between the deuterium-deuterium ͑D-D͒ and deuterium-an isotope of helium with two protons and one neutron ͑D-3 He͒ reactions to study the contributions of the protons generated from various source regimes. These source regimes are divided into five categories namely: converged core, embedded, beam background, volume, and wall-surface sources. The eclipse disk diagnostic has provided the first confirmed evidence that D-3 He reactions are predominantly embedded reactions. It has been observed that at the present operating power levels ͑6-10 kW͒ most of the D-D reactions occur in the volume of the chamber caused by the charge exchanged neutrals, and the converged core contribution is significant only for D-D reactions. Since the branching ratio for the proton and neutron generation in a D-D fusion reaction is ϳ50%, it is inferred that the proton to neutron count ratio is a better parameter to monitor than either proton or neutron counts measured alone while studying the source regimes. This parameter may also be used for studying the potential wells within the cathode grid.

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Fusion reactivity characterization of a spherically convergent ion focus

Cited by 56 publications

References 28 publications

Design of a linear neutron source

Design of a linear neutron source

Effects of Grid Cathode Structure on a Low-Input-Power Inertial Electrostatic Confinement Fusion Device

Study of fusion regimes in an inertial electrostatic confinement device using the new eclipse disk diagnostic

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