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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!asuvax!ennews!telesys!isus!hoyt
- From: hoyt@isus.UUCP (Hoyt A. Stearns jr.)
- Subject: Re: List
- Message-ID: <1993Jan7.181458.5320@isus.UUCP>
- Followup-To: sci.physics.fusion
- Summary: Sealed "cold fusion" cell.
- Keywords: P&F, recombiner, sealed cell
- Organization: International Society of Unified Science
- References: <930105144432.20a07695@FNALD.FNAL.GOV>
- Date: Thu, 7 Jan 1993 18:14:58 GMT
- Lines: 109
-
- In article <930105144432.20a07695@FNALD.FNAL.GOV> DROEGE@fnald.fnal.gov writes:
- >Hoyt A Stearns writes:
- >
- >"I think you forgot one: My Pd Pt cell has a hydrocap recombiner, and was
- >evacuated after Pd charging. The head pressure is very low."
- >
- >Does it stay low? Under these conditions, either outgassing or new absorption
-
- Yes. It has been "low" for a year.
-
- The hydrocap is quite efficient, I guess.
-
- DISCLAIMER: I don't have any where near the equipment, time, or money
- available to me as you have. This is a "back burner" project. If something
- is convenient to try, I'll do it, without necessarily having any
- hypothesis.
-
- The electrolyte is 100g 99.9% D20, 1 pellet of Li metal, and a trace of CS2.
-
- The cell was evacutated to prevent the Li0D from absorbing C02 to form
- LiCO3; to prevent H20 exchange with D20, and, of course, the cell is sealed
- because I can't afford to keep buying D20.
-
- Because of previous experiments with very high voltages and currents,
- I definitely don't want very much combustible gas in the head space,
- and the hydrocap obliges.
-
- The cell consists of 2 in^2 of platinum ribbon wrapped on a polyethylene
- semi-permeable membrane 1" dia. In the center is a 5g Pd rod.
- At the top fluid surface is a 10 g Pd disk, half immersed, flat side down.
- All electrodes are wired with Pt wire mechanically connected (no brazing).
-
- The cell is sealed with parafilm around a 2" rubber stopper.
-
- Normally I have the two Pd pieces connected together electrically, but
- I have varied the currents to change the current distribution in the
- electrolyte.
-
- >
- >Note anything kills the vacuum. If there is D2 absorption then the excess O2
- >kills the vacuum. If the cathode outgasses D2 then that kills the vacuum
- >since there is no O2 to combine it on the catalyst.
- >
-
- I wouldn't say my "low pressure" is a vacuum. It is, of course, higher than
- the vapor pressure of D20 at room temperature, but substantially lower than
- atmospheric (but I don't have calibrated guage).
-
- A bit of history: This cell has been sealed for >2YR, and been through
- many different experimental conditions. It has been operating with 5 volts,
- 42 ma for a year. It gets warm to the touch every couple of weeks
- for a day or so (There is no calorimeter, so this counts for nothing).
-
- Previously (>1 year ago):
-
- The cell has been run with 10 amps in a water cooled jacket, which
- boils the electrolyte and expels vapor out a check valve through a bubbler,
- due to thermal expansion, boiling etc. (this leaves low pressure when the steam
- condenses);
-
- It has been pulsed with 1000V high current pulses once a second for a while
- (interesting and spectacular display of red plasma--this probably creates
- ultrasonic shock waves. It was violent enough I was worried about shattering
- the container. It also created a black sediment of unknown composition);
-
- It has been run with an immersed ultrasonic generator
- (the only effect I saw was the electrolysis bubbles changed in size,
- as I recall there were fewer of them, but larger, making it easier to
- see inside).
-
- It has been run surrounded with a wire solenoid, with pulsed high current
- applied, constant DC current, and sinuosoidal AC.(The idea here was
- to induce large circulating currents in the Pd) (A previous cell had
- electrical connections on both ends of the Pd rod, and various combinations
- of currents through the rod and currents to the electrolyte were tried,
- including AC and DC).
-
-
- It has been run raised to + and - 40KV (the whole apparatus).;
-
- It has been run with DC offset AC electrolysis current, the AC varying from
- 60 HZ to several MHz.
- ____
-
- Things I'd like to try but haven't yet:
-
- Mount a Pd rod in two bearings to make an axle, then angularly misalign
- one bearing, and rotate the Pd to create alternating compression and
- rarefaction at the perimeter of the rod.
-
- Rotate the Pd rod at high speed to create a boundary layer of electrolyte.
-
- Rotate the whole apparatus about the Pd rod (this will cause the bubbles
- to migrate toward the rod).
-
- Put the whole apparatus in an ultra-centrifuge (this will cause the bubbles
- to be of much higher pressure, and probably rise faster.
-
- Fire a high power pulse laser to a spot on the Pd.
-
- Ultrasonically excite the Pd rod itself.
-
- Explosively compress a D charged Pd sphere.
-
- --
- Hoyt A. Stearns jr.|hoyt@ | International Society of Unified Science|
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