Fusor Forums

recently Prof. Holmlid reported about d-d-fusion:
http://ocs.ciemat.es/EPSICPP2012ABS/pdf/P1.105.pdf
with a 1J,80 ps laser
any comments?

steinbock wrote:
> recently Prof. Holmlid reported about d-d-fusion:
> http://ocs.ciemat.es/EPSICPP2012ABS/pdf/P1.105.pdf
> with a 1J,80 ps laser
> any comments?

Why don't you start with an introduction of yourself,
according to the rules you checked "I agree" to.

Then please have the courtesy of introducing Prof. Holmlid's report
using more of your own words, and offer some comments of your own,
before asking for those from others.

You have put so little into your first post,
many readers will suspect that you have come as a troll.
This isn't Twitter.

[edit] Look, you've got me as peevish as certain other regulars!

At 300,000 g/cc I presume we're talking about a few hundred atoms hanging together in some seriously exotic manner, rather than some 'significant amount of stuff' that might be 'conventional matter' to experiment with?

I'd say based on the very short pdf that this is not fusion but laser induced fission in a high density fissile material (i.e. Deuterium).

Just my two cents.

I think the possibility of fusion in Rydberg matter is interesting, but the means of production, identification, and study of this state of deuterium seems far beyond the reach of amateur science at this point. From what little I've read in the last few minutes, it appears that to produce a few dozen atoms of D(-1), some kind of special potassium-coated iron oxide catalyst is required. Despite breezing through a handful of papers, I wasn't able to dig deep enough in the chain of references to find a truly useful explanation of how the catalyst surfaces are prepared.

-Carl

Looks like more putt-putt boat fusion to me, ala NIF etc., but on a kinder, gentler, microscopic scale using special materials.

Richard Hull

This seems more along the lines of the crystal plasma I mentioned here; viewtopic.php?f=15&t=7190#p49062 .

Not sure if anyone could yet contemplate how such things might ever work in practice when the substance involved is so 'exotic', let alone how it might ever be approached by amateur means.

I have a pdf of "Laser-driven nuclear fusion D+D in ultra-dense deuterium: MeV particles formed without ignition" by Holmlid if anyone is interested.

Same stuff....
"A Nd:YAG (neodymium doped yttrium aluminum garnet) pumped dye laser with a power of ,100 mJ per 5 ns long pulse at 10 Hz is used at 564 nm. The laser beam is focused at the center of the ultra-high vacuum chamber by an f 1⁄4 400 mm lens, giving an intensity of ,5 × 1011 W cm22 at the approximately 100 mm beam waist located in the center of the chamber. Close to the center of the appar- atus (Fig. 1), a K doped iron oxide catalyst sample (Meima & Menon, 2001; Holmlid, 2002; Muhler et al., 1992) is used as the emitter to produce D(-1) from deuterium gas at a pressure up to 1 × 1025 mbar."

sorry for the short post and lack of background.
My personal background: physicist with 35 years in nuclear saftey research.
more background (in german) on the site www.dd-fusion.de.
Prof. Holmlid informed the public in april 2009, that he has produced rydberg matter deuterium (RM-D) with a density of 140000 gram/cm^3.
Since then he published a dozen articles claiming that RM-D is
superconducting, superfluid, showing the Meissner effect and
can be ignited with a Nd-YAG-laser of his own lab (see his personal site http://www.cmb.gu.se/english/staff/holmlid-leif/)
His last publication describes the ignition of RM-D with a bigger Nd-YAG
in a lab at Lund university.
When reading all his publications and believing his findings,
it seems to me that inertial confinement fusion of RM-D is no longer a field
for large labs like NIF/LLNL or Rochester-Plasmalab but for people like here in the fusor community.

We should send Holmlid a bubble detector to see if they're really producing neutrons. Some new form of matter and overly complicated diagnostics are making me doubt their claims. They should detail the magic iron oxide catalyst or just send some loaded samples to the other laser scientist folks to shoot.

Holmlid reported that the D(-1) RM-D drops down from the catalyst surface and
gathered in a capillary tube shows the fountain effect like superfluid He,
disintegrate on target plates with a magnetic field--> Meissner effect,
shows Coulomb explosions when illuminated with a Nd-YAG-laser
and the exploding deuterons fly away with 630 eV kinetic energy.