Dense Plasma Focus
The machine behind the MH370 orb claim: what it is, what it has actually measured, and what would have to be true for an orb to be one.
In Plain English
A dense plasma focus is roughly the size of a filing cabinet. Two nested metal electrodes sit in a vacuum chamber, wired to a bank of capacitors. Fire the capacitors and a sheet of current sweeps down the electrodes in a few microseconds, collapses onto the axis, and squeezes a knot of plasma smaller than a grain of sand to temperatures that no other fusion experiment has matched.
Physicists have been building these since the early 1960s. The parts are off the shelf.
That matters for this site because 4Orbs argues the MH370 orbs are compact fusion devices, and "compact fusion device" names a category rather than a design. Ask a sceptic to check a category and there's nothing for them to take hold of. The dense plasma focus is the specific machine the argument leans on, and it comes with a six-decade published record, a peer-reviewed performance paper with real numbers in it, and a company in New Jersey firing one this month.
So this guide does three things. It explains how the machine works, it reports what has genuinely been measured versus what has been forecast, and it sets out what would have to be true for one of these to be flying alongside an aircraft. The third part is where the claim becomes testable, which is the whole reason for naming a device instead of a category.
The Pinch, Start to Finish
The whole shot lasts a few microseconds. The current sheet is drawn here at successive positions rather than in separate frames, because the point is that one continuous thing is happening: the sheet generates the field that then drives it inward onto itself. The phase names underneath are one decomposition among several, which is a caveat the literature earns.
Two Electrodes and a Capacitor Bank
Discovered Twice, Independently
The effect was discovered twice, independently. N.V. Filippov found it in the Soviet Union in 1961, and J.W. Mather in the United States in 1964. The two geometries still carry their names. A Mather-type device uses a long, narrow coaxial electrode pair; a Filippov-type uses a short, wide one, close to a plane. Both do the same job by the same physics.
The Arrangement
Here's the arrangement. A central rod (the anode) sits inside a cage or cylinder of outer conductors (the cathode), with an insulator at the base separating them. The chamber holds a low-pressure fill gas: deuterium in most machines, decaborane in the ones chasing aneutronic fuel. A capacitor bank dumps tens or hundreds of kilojoules across the electrodes in under a microsecond.
It Does Its Own Compression
What makes the device interesting is that it does its own compression. There's no external confinement magnet doing the work, as there would be in a tokamak or a field-reversed configuration. The current sheet generates the magnetic field, and that field then pushes the current sheet inward onto itself. Physicists call this a pinch, and it's the cheapest route to extreme plasma conditions anyone has found. That self-compression is also why the device fits in a room rather than a building.
One Common Way to Break Up the Discharge
Most descriptions split the few microseconds of a shot into stages. Bennett and colleagues, writing in Physics of Plasmas in 2017 (volume 24, article 062705), name four:
- Breakdown (they also call it insulator flashover). The voltage arcs across the insulator at the base and a current sheet forms.
- Axial run-down. The sheet accelerates along the electrodes, sweeping gas ahead of it like a snowplough.
- Run-in. The sheet rounds the end of the anode and travels inward toward the axis.
- Pinch. The plasma compresses into a dense column a millimetre or so across, where the extreme conditions occur.
Nobody Agrees on the Stage Count
Even that paper doesn't hold its own count steady: its text says four phases while the caption to its first figure illustrates five, adding the post-pinch expansion where the plasma blows out radially and axially toward the outer cathode. That extra phase matters, because the neutrons, hard X-rays and ion beams emerge as the pinch comes apart.
So treat any stage list as one decomposition among several rather than the canonical one. Mahadevan Krishnan's 2012 review in IEEE Transactions on Plasma Science (volume 40, issue 12, pages 3189 to 3221) works in three phases. Bernard and colleagues in 1998 also give three, then subdivide into six in one of their figures. The Lee model code, probably the most widely used simulation tool in the field, runs five and has no breakdown phase at all, because breakdown is handled separately by particle-in-cell codes.
What Happens Inside the Collapse
Stages describe the geometry of the discharge. A second description, running in parallel across the same few microseconds, covers what the plasma does to itself along the way: it goes unstable, repeatedly, and each instability concentrates the energy further.
Instabilities, One After Another
The current sheet doesn't stay a smooth sheet. It breaks into filaments, thin current-carrying threads that twist around each other, and this happens early, during breakdown and run-down, well before the pinch. Kink instabilities in a pinched column are standard Z-pinch physics: a corkscrew buckling that squeezes a short section far harder than the rest. So are plasmoids, self-contained magnetically bound knots of plasma.
Chaining those into one causal sequence, filaments merging on the axis, then kinking, then pinching off a plasmoid perhaps 100 microns across that carries the highest densities and energies in the device, is specifically LPPFusion's account of how their machine reaches its results. Each ingredient is real and observed. The chain is the company's, and it should be read as their model rather than as settled description.
Whose Account This Is
Attribution matters here, and secondary summaries routinely get it wrong. This picture is not one company's idea. Winston Bostick, Vittorio Nardi and their coworkers took the lead from the 1960s onward in arguing that the fine structure of the current sheath matters to plasma focus physics: filaments forming during the axial phase, and hot spots in the pinch. That much is the established lineage, and Auluck's review credits them with it directly. Eric Lerner sits in the same tradition of filamentation theorists, credited there with proposing a minimum energy dissipation principle to explain why filaments form at all. His broader line of work on magnetic self-compression goes back to 1986, in Laser and Particle Beams, applied then to quasars and radio galaxies rather than to laboratory devices (volume 4, issue 2, pages 193 to 213).
Established vs Contested
The individual phenomena are mainstream plasma physics. Auluck and colleagues, surveying the field in Plasma in 2021 ("Update on the Scientific Status of the Plasma Focus", 4(3):450), describe filamentation as "a popular theme in plasma focus literature from its early days till today".
What's contested is the causal story built on top. The claim that this specific cascade is the route to net fusion energy belongs to LPPFusion, and the same Auluck review notes that filament-based explanations "are not supported by any complete experimental report". A reader should hold those two facts together: the phenomena are real and observed, and the mechanism connecting them to a working power source is one lab's interpretation that the wider field has not accepted.
What Has Actually Been Measured
The reference point is a 2023 paper in the Journal of Fusion Energy: "Focus Fusion: Overview of Progress Towards p-B11 Fusion with the Dense Plasma Focus", by Eric J. Lerner, Syed M. Hassan, Ivana Karamitsos-Zivkovic and Rudolph Fritsch, volume 42 issue 1, article 7, published 9 March 2023 (DOI 10.1007/s10894-023-00345-z). Four authors, and worth naming all four, because most secondary write-ups list only the first two.
Three numbers from that paper carry the weight. The device reached confined ion energies above 200 keV, which the authors state are the highest of any fusion experiment. It ran with the lowest impurities of any fusion plasma. And it reached a triple product, the density multiplied by confinement time multiplied by temperature that determines whether a fusion plasma can sustain itself, of 3.4 × 1020 keV-s/m3.
Those figures are peer reviewed. They're also self-reported by the organisation building the device, which is the normal situation in small-scale fusion research and doesn't invalidate them. Both things belong in the same sentence whenever the numbers are quoted, and this site quotes them as the paper's claims rather than laundering them into bare fact.
So does a record ion energy mean the machine is close to producing power?
Read the ion energy figure carefully, because it's the one most easily oversold. High confined ion energy is a genuine record and it's necessary for proton-boron fusion, which needs far higher energies than deuterium-tritium does. It's not the same as net energy output. A device can hit record ion energies in a plasmoid a tenth of a millimetre across and still produce far less energy than it consumed, because the reacting volume is tiny and the confinement lasts nanoseconds.
The same 2023 paper projected that "with adequate, but still modest, financial resources" the authors "anticipate working prototype generators could be ready for production by 2026 to 2030". Keep the conditional attached: the forecast was never unconditional, and whether the resources arrived is part of judging it. This page reports it as a 2023 projection, with the position as of August 2026 in the next section.
One more piece of context, and it bears directly on that conditional. A review committee of four senior scientists chaired by Robert Hirsch, who once ran the United States government fusion programme, has assessed the work as impressive for its scale while stating that the programme "is vastly underfunded and merits a much higher funding level". So by the reviewers' own account the modest resources the forecast assumed did not arrive. That's a serious name giving a serious endorsement of the research, and it is not a claim that the device works as a power source.
Where the Programme Stands, August 2026
LPPFusion's machine is called FF-2B and it's in Middlesex, New Jersey. Reassembly finished on 20 May 2026 and the bake-out started straight after it, running about a month; the device was back to firing on 19 June. On the boron campaign, their own words are that they "ran out of time to actually fire with boron" and will do it in August.
There has been experimental progress since the 2023 paper, and it's the unglamorous kind that matters. In the shots that followed they report that "the oxygen line disappeared and the silicon line was reduced 20-fold, exceeding our goal of tenfold reduction". They also report perfecting a filter circuit that cut oscillations on the axial field coil, which controls the spin of the plasmoid, by a hundred-fold. To keep hydrogen and boron from separating they slowed the current sheath by adding more decaborane to the gas fill.
What hasn't happened is a new set of headline performance numbers. The ion energy, triple product and yield figures still trace back to the 2023 paper. The company claims no net energy anywhere on its site, and no working prototype. Development is funded partly through an open crowdfunding campaign, which tells you something honest about the scale of the resources involved.
So the 2023 forecast has not landed on its early bound. Sixty years of published physics and a real peer-reviewed record sit alongside a commercial timeline that hasn't been met, and both are part of an accurate picture of this device in 2026. Anyone citing the 2026 to 2030 window should date-stamp it as a 2023 projection.
What Would Have to Be True for an Orb to Be One
Ashton Forbes names the device directly in his 2026 analysis of the orb formation footage: "Okay, now the secret word of the day. Actually, three words. DPF, dense plasma focus." His reading is that each orb is a pulsed dense plasma focus, and that the visible structure of the objects reflects the filament-and-plasmoid sequence described above.
Set out as conditions, the claim needs four things to hold.
It would have to run repetitively rather than in single shots, since laboratory machines fire once and then recharge.
It would have to survive its own electrode erosion, the practical limit on shot count in every DPF ever built.
It would have to carry its own power supply, because the capacitor bank is most of the mass and volume.
The plasmoid, which lasts nanoseconds in the lab, would have to persist long enough to be seen.
The device would have to run repetitively rather than in single shots, since laboratory machines fire once and then recharge. It would have to survive its own electrode erosion, which is the practical limit on shot count in every DPF ever built. It would have to carry its own power supply, because the capacitor bank is most of the mass and volume. And the plasmoid, which lasts nanoseconds in the lab, would have to persist long enough to be seen.
Every one of those is a hard engineering problem and none of them is a physics impossibility. That's a meaningful distinction, and it's the reason this device is worth naming: the gap between a laboratory DPF and a flying orb is measured in engineering, not in new physics. Whether anyone has closed that gap is a separate question, and this page doesn't answer it.
What naming the machine does is make the argument falsifiable. "Compact fusion device" can absorb any objection. "A repetitively pulsed dense plasma focus with a self-contained power supply" can't, because each of those four conditions is something a reader with the right background can attack. Handing critics a specific target is the point.
One note on sourcing, since this site holds itself to it. Forbes does name Eric Lerner and LPPFusion directly, five times in that video, though YouTube's auto-captions render the surname as "Learner", which is enough to defeat a naive transcript search. Anyone checking this page against the transcript should search both spellings. The papers remain the citable sources for the physics itself. For where this fits in the wider orb argument, see the MH370 orb physics guide and the Miley 2016 reactor paper, which reaches similar conditions by a different route.
George Miley has his own dense plasma focus work, and it's public. At STAIF-2006 he co-authored a parametric study of a p-11B DPF sized for military aerospace vehicles with Franklin Mead of the Air Force Research Laboratory (AIP Conference Proceedings 813, DOI 10.1063/1.2169306). Forbes reads a later anonymous schematic as proof Miley built a classified version of that machine; tracing the drawing's own annotations lands somewhere more checkable, and the anonymous schematic section sets out where they actually come from.
Mainstream vs. Speculative
This site covers both established science and unproven claims. Here's where the line falls for this topic.
The device is sixty years of published physics, discovered independently by Filippov in 1961 and Mather in 1964, and it really does compress its own plasma with no external confinement magnet. Filamentation, kink instabilities and plasmoids are all real and observed, with the lineage running back to Bostick and Nardi in the 1960s. The 2023 ion energy, impurity and triple product figures are peer reviewed.
That the filament-to-plasmoid cascade is the route to net fusion energy: that causal chain is LPPFusion's model, and Auluck's review notes filament-based explanations "are not supported by any complete experimental report". No net energy has been claimed anywhere, and the 2023 projection of prototypes by 2026 to 2030 has not landed on its early bound. That an MH370 orb is a flying DPF remains four hard engineering problems away, none of them a physics impossibility.
Key Terms
Dense Plasma Focus
Two coaxial electrodes, a low-pressure fill gas and a capacitor bank that dumps tens or hundreds of kilojoules in under a microsecond. The discharge compresses itself. Discovered independently in the USSR (1961) and the USA (1964).
Pinch
Self-compression: the current sheet generates a magnetic field, and that field pushes the sheet inward onto itself. The cheapest route to extreme plasma conditions anyone has found, and the reason the device fits in a room.
Current Sheet
The thin conducting layer that carries the discharge. It does not stay smooth: it breaks into filaments early, during breakdown and run-down, well before the pinch.
Filamentation
The break-up of the sheet into thin current-carrying threads that twist around each other. Described in one 2021 review as a popular theme in plasma focus literature from its early days until today.
Triple Product
Density multiplied by confinement time multiplied by temperature: the figure that determines whether a fusion plasma can sustain itself. The 2023 paper reports 3.4 × 1020 keV-s/m³.
Aneutronic Fuel
Proton-boron fusion, which releases its energy as charged particles rather than neutrons. It needs far higher ion energies than deuterium-tritium, which is why a record ion energy matters here and still isn't the same as net output.
Key Takeaways
The machine compresses its own plasma. No external confinement magnet does the work, which is why it fits in a room rather than a building.
Don't treat any stage list as canonical. Published accounts run to three, four, five or six phases, and the most widely used simulation code has no breakdown phase at all.
The phenomena are mainstream; the causal chain is one lab's model. Filaments, kinks and plasmoids are all observed. Chaining them into a route to net energy is LPPFusion's account, and the wider field has not accepted it.
A record ion energy is not net output. You can hit record energies in a plasmoid a tenth of a millimetre across and still produce far less than you consumed.
Naming the machine is what makes the orb claim falsifiable. "Compact fusion device" absorbs any objection; a repetitively pulsed DPF with its own power supply hands a critic four specific things to attack.