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- Title
On Scaling of DD Fusion Power in a Nanosecond Vacuum Discharge.
- Authors
Kurilenkov, Yu. K.; Tarakanov, V. P.; Oginov, A. V.
- Abstract
Earlier, in a nanosecond vacuum discharge (NVD) with a deuterated Pd anode, the appearance of DD neutrons was observed not only at the well-studied quasi-stationary stage, where a virtual cathode (VC) appears in the interelectrode space, but also at the initial stage of the discharge. An analysis of the experiment shows that the autoelectron beam can play the role of a kind of trigger for starting DD fusion processes on the surface or in the volume of the Pd anode, but its mechanism at the initial stage of the discharge remained unclear. In this work, PIC modeling of the possible partial penetration of a beam of autoelectrons into hollow anode Pd tubes is carried out. This leads to the formation of very small short-lived VCs inside individual Pd tubes, where, starting from a current of 100 A, DD microfusion is possible. It is shown that in devices with oscillating ions, the favorable scaling of the DD fusion power, which increases with decreasing VC radius, can be retained up to rVC ≈ 0.02 cm.
- Subjects
CATHODES; NEUTRONS; ANODES
- Publication
Plasma Physics Reports, 2022, Vol 48, Issue 4, p443
- ISSN
1063-780X
- Publication type
Article
- DOI
10.1134/S1063780X22040080