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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!darwin.sura.net!mips!pacbell.com!tandem!zorch!fusion
- From: ames!FNALD.FNAL.GOV!DROEGE
- Subject: Latest News
- Message-ID: <920727160559.2080117d@FNALD.FNAL.GOV>
- Sender: scott@zorch.SF-Bay.ORG (Scott Hazen Mueller)
- Reply-To: ames!FNALD.FNAL.GOV!DROEGE
- Organization: Sci.physics.fusion/Mail Gateway
- Date: Tue, 28 Jul 1992 03:35:25 GMT
- Lines: 84
-
- We are running a pseudo Ying experiment - this is the present status.
-
- It looks like it will be at least a week until I have some sources. The
- weekend was spent trying to speed up the data collection process by making
- faster source switches. At the end of this data we made up a dummy of the
- source so that the in - out is as much alike as possible. With the speed up,
- the signal went down into the noise. If there is a signal.
-
- This lead to an experiment to try to determine the relative intensity of the
- source and the background. Two of us (my visiting brother in law is a solid
- state physicist) counted by ear as long as we could stand to hear the geiger
- counter ping. A five minute background count gave 69 counts, a five minute
- count with the source at the same distance (but without any simulation of the
- calorimeter materials) gave 76 counts. I conclude from this that an upper
- limit on the increase in radiation at the cell due to the source is 50%. More
- probable it is of order 10% and so it is a fair match to the data.
-
- By the time one considers what might be happening in the cell, and what the
- statistics might be, it does not look so good for short periods and I wish I
- had not changed. One reason for the short periods is to better remove drift,
- like weather and relative humidity effects. However, I am more or less
- committed to roughly eight hour periods now until the better source arrives.
- I do not want to run 12 hour periods because there is a hint in all my data
- that there is a day/night effect in the calorimeter balance that is there with
- heavy water but not there calorimeter empty.(No good light water data for
- this.) It is only a few milliwatts, and enough of a puzzle that if "cold
- fusion" does not work out, I will go after the day/night effect. The more I
- think about it, it would seem better to go back to 24 hour measurement and
- simply put in the stronger source on the next in period after it arrives.
-
- At the end of the data below, I made a small program change. Before, the down
- sweep of the saw tooth was initiated when the command value exceeded a
- particular value. Since the current is stepped every 10 seconds and the data
- is measured every minute there was a beat between the saw tooth down time and
- the data collection time. The program change synchronized the down sweep with
- data taking. The idea was to reduce the beat "noise" so that shorter data
- collection periods would be possible. Note that I do *not* think that this
- effects the power computation over long periods either way. (And there is a
- lot of data at a wide range of saw tooth period to argue my point!)
-
- There is a 1000 hours or so of data where there is no "anomalous heat"
- indicated which can be compared to the data below. This will be an
- interesting exercise if it is not possible to find a "knock your socks off"
- experiment.
-
- Pt Gamma Duration Duration Accumulated Estimated Average
- # Status Seconds Hours Net Joules Error-J Power - watts
-
- 1 On 17760 4.9 532.8 49 0.0300 +/- 0.0027
- 2 Off 48060 13.4 1268.8 50 0.0264 +/- 0.0010
- 3 On 87300 24.3 2715.0 100 0.0311 +/- 0.0011
- 4 Off 77220 21.5 1621.6 50 0.0210 +/- 0.0006
- 5 On 82740 23.0 3607.5 50 0.0436 +/- 0.0006
- 6 Off 79980 22.2 2709.7 50 0.0339 +/- 0.0010
- 7 On 83640 23.2 3284.3 50 0.0393 +/- 0.0010
- 8 Off 57300 15.9 1201.0 50 0.0210 +/- 0.0010
- 9 On 25440 7.1 897.0 50 0.0353 +/- 0.0010
- 10 Off 20940 5.8 1365.4 50 0.0652 +/- 0.0010
- 11 On 34500 9.6 1663.3 50 0.0483 +/- 0.0010
- 12 Off 25500 7.1 1398.8 50 0.0548 +/- 0.0010
- 13 On 11760 3.3 685.5 33 0.0560 +/- 0.0028
-
- The promising thing about this data is that it is made up of 5150 individual
- power measurements with the source out which average to 0.0310 watts of excess
- heat. There are 5719 source in power measurements which average to 0.0389
- watts. Because of the saw tooth current, and the lag of the servo in
- response, the calorimeter power input measurements vary from 7 to 12 watts and
- are more or less evenly distributed over that range, with a mean refrigerator
- power of 10 watts. Thus we are comparing two "box car" distributions with
- mean values that vary by 0.0089 watts source out to in but with widths of 5
- watts. I really do think the calorimeter is good enough to make this
- measurement. If there is anyone who thinks it can't, I offer to bet you $1000
- a crack that given wires and a resistor into my calorimeter, I can tell when
- you are putting in 10 mw.(some restrictions apply - write for details).
-
- The discouraging information is that the effect seems to have gone away or
- reversed with the shorter interval. Perhaps there is a time lag. But one as
- long as indicated boggles the synapses.
-
- Looks like I am where I always seem to be with "anomalous heat". There is
- just enough to keep me looking for a better experiment.
-
- Tom Droege
-
-