Suprathermal hard X-rays and energetic particles
from plasmas "dust"

Kurilenkov, Yu. K.; Skowronek, M.; Louvet, G.; Rukhadze, A. A.; Dufty, James W.

doi:10.1051/jp4:2000579

Cited by 4 publications

(18 citation statements)

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“…The energetic ions and DD neutrons from microfusion at the interelectrode space of a low energy nanosecond vacuum discharge has been demonstrated recently [8,9]. The efficiency of hard X-rays and fast ions generation by nanosecond vacuum discharge, as well as the neutron generation, is at least two orders of magnitude higher than for experiments on DD fusion driven by Coulomb explosion of laser irradiated deuterium clusters [3].…”

Section: Introductionmentioning

confidence: 98%

“…(Online colour: www.cpp-journal.org). The complex physics of nanosecond discharge processes and the mechanisms of microfusion were poorly understood at first [8], and motivated the interest in complementary PIC (particlein-cell) KARAT simulations [10,24,29]. In addition to representing the key points of general physical picture, computer modelling allows clarification of the details of the experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…Neutron generation in x-ray ensembles (like in Fig.2a and Fig.3a below) due to DD reactions of nuclear synthesis has been registered using a slightly modified experimental set-up in comparison with earlier x-ray and fast ions studies [8]. The new cylindrical Cu anodes (∅ = 0.6 CM) have a set (3 or 12) of thin hollow Pd deuterated tubes (∅ =0.1 CM) attached to anode end-on, and the hollow cathode with conical part was constructed from Al.…”

Section: Introductionmentioning

confidence: 99%

“…The source (Fig.1) is based on an electrical discharge having a rise time of about 10 nsec [8,9]. Set-up consists of a cylindrical vacuum chamber (diameter 50 mm) having three windows closed by Mylar films 70 μm thick.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, head-on collisions of D + ions with energies of a few tens of keV is followed by DD nuclear fusion, transforming the interelectrode space into something like a reactor chamber. PIC modeling allows the identification of the small-scale experiment [8][9][10] with a rather old branch of plasma physics, as inertial electrostatic confinement fusion (IECF) system (see [11][12][13][14] and refs therein). Pioneers of IECF were O. Lavrent'ev in the USSR and F. Farnsworth in the USA, but due to different reasons, including a rather low value for Q = E fusion / E input ∼ 10 −6 or even less, this concept for fusion was almost forgotten.…”

Section: Introductionmentioning

confidence: 99%

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Warm Dense Matter Generation and DD Synthesis at Vacuum Discharge with Deuterium‐Loaded Pd Anode

Kurilenkov

Тараканов

Gus’kov

et al. 2011

Contrib. Plasma Phys.

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The energetic ions and DD neutrons from microfusion at the interelectrode space of a low energy nanosecond vacuum discharge with deuterium-loaded Pd anode has been demonstrated recently. To understand better the physics of fusion processes the detailed PIC simulation of the discharge experimental conditions have been developed using a fully electrodynamic code KARAT. The dynamics of main charge particle species was reconstructed in time and interelectrode space. The principal role of a virtual cathode (VC) and the corresponding single and double potential well formed in the interelectrode space are recognised. The calculated depth ϕ of the quasistationary potential well (PW) of the VC is about 50-60 kV, and the D + ions being trapped by this well accelerate up to energy values needed to provide collisional DD nuclear synthesis. Both experiment and PIC simulations illustrate very favourable scaling of the fusion power density at decreasing of VC radius ( ∼ ϕ 2 /r 4 V C ) for the chosen inertial electrostatic confinement fusion scheme based on miniature nanosecond vacuum discharge. Meanwhile, the initial stage of discharge is understood still poorly. When voltage is applied, the electron beam extracted from cathode starts to interact with the surface of deuterium-loaded Pd anode. This early stage of discharge manifests sometime the peaks registered by photomultipliers which are similar to neutron ones from time-of-flight measure under the study of collisional DD synthesis at the further stages of discharge. The detailed study of Pd anode surface morphology have been performed and recognized, in particular, the number of various pores and craters of different sizes. We remark that besides of rather usual craters (due to electron beams -anode interaction) some of the craters on the Pd anode surface may correspond to anode ectons (explosive centres) and consider their possible nature. Specifics of warm dense matter (WDM) generated at different stage of discharge is discussed. The data obtained are compared with recent results on initiation of DD reactions by electron beams at deuterium -loaded Pd foils and correspondent data on their surface morphology.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Warm Dense Matter Generation and DD Synthesis at Vacuum Discharge with Deuterium‐Loaded Pd Anode

Kurilenkov

Тараканов

Gus’kov

et al. 2011

Contrib. Plasma Phys.

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Recent experimental study of DD fusion in the potential well of a virtual cathode at nanosecond vacuum discharge

Огинов

Kurilenkov

Samoylov

et al. 2016

J. Phys.: Conf. Ser.

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Inertial electrostatic confinement and DD fusion at interelectrode media of nanosecond vacuum discharge. PIC simulations and experiment

Kurilenkov

Тараканов

Skowronek³

et al. 2009

J. Phys. A: Math. Theor.

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The generation of energetic ions and DD neutrons from microfusion at the interelectrode space of a low-energy nanosecond vacuum discharge has been demonstrated recently [1, 2]. However, the physics of fusion processes and some results regarding the neutron yield from the database accumulated were poorly understood. The present work presents a detailed particle-in-cell (PIC) simulation of the discharge experimental conditions using a fully electrodynamic code. The dynamics of all charge particles was reconstructed in time and anode–cathode (AC) space. The principal role of a virtual cathode (VC) and the corresponding single and double potential wells formed in the interelectrode space are recognized. The calculated depth of the quasistationary potential well (PW) of the VC is about 50–60 keV, and the D+ ions being trapped by this well accelerate up to energy values needed to provide collisional DD nuclear synthesis. The correlation between the calculated potential well structures (and dynamics) and the neutron yield observed is discussed. In particular, ions in the potential well undergo high-frequency (∼80 MHz) harmonic oscillations accompanied by a corresponding regime of oscillatory neutron yield. Both experiment and PIC simulations illustrate favorable scaling of the fusion power density for the chosen IECF scheme based on nanosecond vacuum discharge.

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Suprathermal hard X-rays and energetic particles from plasmas "dust"

Cited by 4 publications

References 0 publications

Warm Dense Matter Generation and DD Synthesis at Vacuum Discharge with Deuterium‐Loaded Pd Anode

Warm Dense Matter Generation and DD Synthesis at Vacuum Discharge with Deuterium‐Loaded Pd Anode

Recent experimental study of DD fusion in the potential well of a virtual cathode at nanosecond vacuum discharge

Inertial electrostatic confinement and DD fusion at interelectrode media of nanosecond vacuum discharge. PIC simulations and experiment

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