Is LPPX trying decaborane right now?

[MTd2]

I saw this tweet yesterday:

http://twitter.com/LPPX/status/7546099644497920

This is a pun on Back to the Future, but that is also the magnetic field, in gauss, necessary to suppress the Bremsstrahlung radiation of a pinch of Boron so that positive net energy can be achieved.

[Rezwan]

MTd2 wrote:
This is a pun on Back to the Future, but that is also the magnetic field, in gauss, necessary to suppress the Bremsstrahlung radiation of a pinch of Boron so that positive net energy can be achieved.

Can you find an article about that? I’d like to link to such a thing, but am unable to find anything. Thanks!

[MTd2]

OOPS! Sorry! 😀

“For Ei =300keV, this implies B>14GG for p, B>3.5GG for α , and B>1.3GG for 11B.”

http://arxiv.org/ftp/physics/papers/0401/0401126.pdf (page 18)

14GG is what is necessary for protons! For borons is 1.3GG!

I got my hopes too high!

[MTd2]

Anyway, according to Lerner, on that article, Boron can make the pinch values of up to 24GG. So, both will be strongly suppressed. So, anyway, talking about 14.4GG actually is about talking about the use of decaborane!!!! :O

You know what`s fun? According to the table given by Lerner, 17GG is achieved with 1.1MA. Lerner could very well start using boron now and expect a nice demonstration of Boron with just 1.8MA fired by the cathode.

[Aeronaut]

MTd2 wrote: Anyway, according to Lerner, on that article, Boron can make the pinch values of up to 24GG. So, both will be strongly suppressed. So, anyway, talking about 14.4GG actually is about talking about the use of decaborane!!!! :O

You know what`s fun? According to the table given by Lerner, 17GG is achieved with 1.1MA. Lerner could very well start using boron now and expect a nice demonstration of Boron with just 1.8MA fired by the cathode.

The tables I’ve seen from Lerner tend to show ranges of input variables, which result in several break-even scenarios. There is one scenario based entirely on producing slightly positive net energy entirely from the ion conversion coils. Numbers in these papers tend to be calculated values to prove or disprove by series of disciplined experiments to scientifically build the case(s).

[MTd2]

Several break – even scenarios? Really? Would you give me an example?

[Aeronaut]

MTd2 wrote: Several break – even scenarios? Really? Would you give me an example?

http://arxiv.org/ftp/arxiv/papers/0710/0710.3149.pdf comes close, but still relies on some X-ray conversion as well. Table 3 lists 5 over-unity scenarios based on differing input currents. The rest of the key specs are also included. If you scroll down the http://lawrencevilleplasmaphysics.com about us page, it’s the top article listed.

[MTd2]

It seems the boron is a totally different beast. The tests with deuterium allows to know how much current arrives is available to the pinch and with how much energy. But everything is more confusing now to me. Reading Lerner`s objectives seems totally non sense now when it comes to multiply power. It doesn`t make sense. For example, giving 1.1 MA at 45KJ to the pinch with deuterium yields about 1Joule, whereas on table 3, it can be made roughly equivalent, to something above 2KJ, a 2000X enhancement.

[Lerner]

You have to read the text as well as the table. That says the table refers to a cathode radius of 1.25 cm, not the 5 cm we are running with. We calculated that our existing elctrodes are the smallest that can safely take the mechanical pinch forces. Also we calculated on other grounds that we would need 2.8 MA for best efficiency.

[MTd2]

Regarding the 2.8MA, I don`t know if you read on the other thread but for deuterium, according to Sing Lee, independently of the configuration used, you cannot achieve a high fusion rate with less than, say 75KV. Sing Lee has been publishing on the saturation effect and he does insist that it begins with 1.5MA for lower voltages, that is, below 50KV. I am sorry to insist about this point, but I cannot find a breach for this rule one his latest papers…

[Aeronaut]

I suspect Lee is finding what he expects to find, and testing other theory (not to mention fuels) could possibly disprove this remake of the ‘sound barrier’.

[MTd2]

Aeronaut wrote: I suspect Lee is finding what he expects to find, and testing other theory (not to mention fuels) could possibly disprove this remake of the ‘sound barrier’.

It seems Lee`s measurements were confirmed by all kinds of DPF so far, so I cannot see a reason why it should be different. As for fuels, I agree with you. Boron was not tested yet and I think the compression rates for Boron follows closely Lerner`s theory since there is suppression of the Bremsstrahlung since the relative beginning of the plasmoid compression.

[Aeronaut]

It could be different because Lerner has a vested interest in achieving 3MA current pulses in the 300hz to 1kz PRF range. Seems to me that we have a purpose-built machine with a number of inter-related technical challenges which few other DPFs share. How many of Lee’s testbeds are either capable of or interested in disproving Lee’s Limitation?

[DerekShannon]

The gigalux units were in reference to calibrations of the ICCD camera.

[vansig]

does it yet stand to be disproved?

parameters: gas, anode diameter, length, fill pressure, in FoFu-1 differ from that of the paper;
i expect lee’s calculator to quantify a prediction for them, though.

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