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Dash, J., J. Freeman, and B. Zimmermann, Cold Fusion Research - Low Energy Nuclear Reactions. 2003, Portland State University: Porland, OR.
Slide 1
Cold Fusion ResearchLow Energy Nuclear ReactionsDr. John Dash, MentorPortland State University
Jeremy FreemanMountain View High School
Ben ZimmermanWilson High School
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Slide 2
IntroductionMarch 23, 1989. Electrochemists B. Stanley Pons and Martin Fleischmann shock the world by announcing their discovery of cold fusion.
Pons (left) and Fleischmann
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Slide 3
PossibilitiesThe original idea, that Deuterium could fuse in a small cell at room temperature, went against common knowledge.The D-D fusion process was only theoretically possible in stars and large Tokamakreactors.The startling results reported provided hope for a new source of energy.
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Slide 4
The Skeptical Revolution
Many, but not all, attempts to replicate the Fleischmann/Pons experiment return null results.Severe criticism of the topic appears in the scientific community soon after the 1989 announcement, often referring to the entire field as a “Pathological Science.”Cold fusion falls from the media spotlight.
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Slide 5
A Decade of ResearchDespite the poor reproducibility of the effect and the opposition of cold fusion skeptics, many researchers continue to pursue their interest in the subject.As a result of continuing research, a very large amount of evidence in support of cold fusion has been collected. This evidence includes excess heat, nuclear by-products, and nuclear transmutation.
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Slide 6
Our Apprenticeship
From Left:
Ben, Conrado Salas Cano, Dr. Dash and Jeremy
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Slide 7
Specific Aims Reproducibility – Construction of two identical experimental cells, with the goal of achieving positive experimental results for bothTo create a working demonstration of the cold fusion phenomenonTo reach approximately one Watt of excess heat energyTo examine electrodes for evidence of micro-chemical changes.
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Slide 8
Materials and Methods
The three cells, midway through the experiments
CB JC
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Slide 9
Cell Design
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Slide 10
The Purpose of Palladium
Palladium is known to absorb up to 900 times its volume of hydrogen.
Deuterium ions are attracted to the palladium cathode and occupy interstitial positions in the crystal lattice.
Palladium atomDeuterium atom
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Slide 11
Electrical Circuit Diagram
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Slide 12
First Experimental Setup
All three cells are placed in insulating cups within the box
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Slide 13
J Cell Polarity Reversal
On the 17th of July, midway through the experiments, the J experimental cell’s polarity was reversed, then restored, causing the formation of a greater surface area on the Palladium cathode.
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Slide 14
First Setup Results22 July Power Inputs
4.8
5
5.2
5.4
5.6
5.8
6
0 50 100 150 200 250 300 350 400Accumulated Run Time (minutes)
Control J Cell B Cell
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Slide 15
First Setup Results22 July Average Temperatures
50
51
52
53
54
55
56
57
58
59
60
300 320 340 360 380 400
Accumulated Run T ime (minutes)
Control J Cell B Cell
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Slide 16
* This term is only applicable during early experiments
Power In Power Out
Steady State
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Slide 17
Excess Heat Equation
The amount of excess heat produced by the experimental cells was found by comparison with our control cell, which was designed and assumed to produce none.
dHdt
dHdt
V I T TT T
V IdH
dtexcess D O
DD ambient
H ambientH
H O= − ⋅ +−−
⋅ −2 2( )
Power In Power OutExcess Heat Power Out Power In
== −
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Slide 18
First Setup Results22 July Excess Heat
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
300 320 340 360 380 400Accumulated Run Time (minutes)
J Cell B Cell
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Slide 19
Second Experimental SetupA SEEBECK Envelope Calorimeter was utilized for a second set of experimental data on the same three cells.
This machine (lower green box) contains 100 thermocouples per square inch, which provide a total box output data set.
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Slide 20
Second Setup ResultsJuly 28 (C) - 29 (J) - 30 (B) Power Inputs
4.5
5
5.5
6
6.5
7
0 50 100 150 200 250 300
Accumulated Run Time (Minutes)
Pow
er In
put (
Wat
ts)
Control J Cell B Cell
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Slide 21
Second Setup ResultsJuly 28 (C) - 29 (J) - 30 (B) Temperature Evolution
2527293133353739414345
0 50 100 150 200 250 300
Accumulated Run Time (Minutes)
Tem
pera
ture
(C)
Control J Cell B Cell
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Slide 22
Second Setup ResultsSteady State Excess heat
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
270 275 280 285 290 295 300
Accumulated Run Time (minutes)
Hea
t Ene
rgy
(wat
ts)
J Cell B Cell
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Slide 23
Third Experimental Setup
Our mobile, open-air demonstration cart
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Slide 24
B Cell Polarity Reversal
On the 7th of August the B Cell’s polarity was reversed and then restored, resulting in the formation of a larger surface area on the palladium cathode.
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Slide 25
Third Setup Results6 August Excess Heat
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0 50 100 150 200 250 300 350
Accumulated Run Time (min)
Hea
t Ene
rgy
(wat
ts)
J Cell B Cell
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Slide 26
Third Setup Results8 August I.R. Excess Heat
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0 50 100 150 200 250 300 350 400
Accumulated Run Time (Minutes)
J Cell B Cell
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Slide 27
Scanning Electron Microscope
SEM and EDX Characterization
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Slide 28
Palladium Before Electrolysis
A
B
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Slide 29
Palladium Before EDX Spectra
A
B
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Slide 30
Palladium ImpuritiesExisting impurities on the palladium sample consisted mostly of carbon and oxygen. There were small amounts of other elements, but no significant contamination. No silver or cadmium was present.
Characterization data from a nearly identical experiment* is presented to show micro-chemical changes in composition after electrolysis.
*Conrado Salas Cano’s Master’s thesis
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Slide 31
Conrado Salas Cano’s D2O Palladium Cathode
Before
After
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Slide 32
Before Electrolysis ComparisonIn numberof atoms
In mass σin mass
41.93% 10.56% 0.20%
20.69% 6.94% 0.48%
0.07% 0.04% 0.06%
1.09% 1.45% 0.24%
36.09% 80.51% 0.85%
0.00% 0.00% 0.70%
0.00% 0.00% 0.42%
0.13% 0.51% 0.20%
C
O
S
Cu
Pd
Ag
Cd
Pt
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Slide 33
Pd Cathode After Electrolysis
In number of atoms In mass σin mass
12.87% 3.21% 0.07%
47.04% 15.59% 0.20%
4.55% 3.02% 0.04%
0.71% 0.94% 0.09%
33.14% 73.04% 0.31%
1.43% 3.19% 0.25%
0.00% 0.00% 0.19%
0.26% 1.03% 0.08%
C
O
S
Cu
Pd
Ag
Cd
Pt
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Slide 34
In numberof atoms
In mass
σin
mass
0.00% 0.00% 0.30%
12.68% 2.29% 0.41%
2.03% 0.73% 0.07%
11.50% 8.22% 1.02%
57.23% 68.5% 1.33%
16.43% 19.9% 0.81%
0.00% 0.00% 0.65%
0.13% 0.29% 0.13%
Spectrum and SEMQuant from spot #2
C
O
S
Cu
Pd
Ag
Cd
Pt
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Slide 35
Theoretical ExplanationThe Trapped Neutron Catalyzed Fusion Model can
provide an explanation for excess heat and nuclear transmutation based on the capture of thermal neutrons.
An explanation for the presence of silver after electrolysis is shown below:
Obtained from H. Kozima’s Discovery of the Cold Fusion Phenomenon, 1998 Ohtake Shuppan, Inc.
The natural abundance of Pd 108 is 27% and Pd 109 has a decay time of 13.6 hours.
n+ = +46108
46109 615Pd Pd MeV.
46109
47109 1166Pd Ag MeV= + + +−e eν .
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Slide 36
Summary & ConclusionsConsistently produced excess heat exists for reproducible cell types
Possible formation of unexpected elements after electrolysis points to nuclear reactions
Although several theories have been put forth, the driving mechanism responsible for cold fusion still remains largely a mystery.
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Slide 37
Key Apprenticeship Learning
Advanced, analytical laboratory skills developmentIntroductory familiarity with SEM, EDS, Calorimeters, and computer programsInstant immersion into a higher academic settingA fuller understanding of the scientific community
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Slide 38
AcknowledgementsDr. John Dash, MentorProfessor Hideo Kozima, Co-mentorDr. Jon Warner, Co-mentorConrado Salas Cano, Co-mentorApprenticeships in Science and Engineering program, with funding provided by the Academy of Applied Science’s REAP Program and the Engineering and Technology Industry CouncilBen and Jeremy’s Parents
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Slide 39
Questions and Comments