chelsea l. harris 1 rand watson 2 1.texas southern university; houston, texas 77047 2.texas a&m...
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![Page 1: Chelsea L. Harris 1 Rand Watson 2 1.Texas Southern University; Houston, Texas 77047 2.Texas A&M Cyclotron Institute; College Station, Texas 77843 (Summer](https://reader036.vdocument.in/reader036/viewer/2022062320/56649d4b5503460f94a27f5d/html5/thumbnails/1.jpg)
Chelsea L. HarrisChelsea L. Harris11
Rand WatsonRand Watson22
1. Texas Southern University; Houston, Texas 770472. Texas A&M Cyclotron Institute; College Station, Texas 77843
(Summer III)(Summer III)
A Pyro-Electric Crystal A Pyro-Electric Crystal
Particle AcceleratorParticle Accelerator
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PurposePurpose
To continue modifications to the pyro-electric To continue modifications to the pyro-electric crystal particle accelerator to increase the neutron crystal particle accelerator to increase the neutron counting rate above background.counting rate above background.
To optimize a pyro-electric crystal particle To optimize a pyro-electric crystal particle accelerator to accelerate deuterons to sufficient accelerator to accelerate deuterons to sufficient energies to initiate d + d fusion reactions. energies to initiate d + d fusion reactions.
OverallOverall
ImmediateImmediate
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MechanismsMechanismsD +D D +D 33He + n He + n (Q = 3.3 (Q = 3.3 MeV)MeV)
D + D D + D T + p T + p (Q = 4.0 (Q = 4.0 MeV) MeV)
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Tunneling EffectTunneling Effect
From R. Dunlap, The Phy. Of Nuc. And Part. (2004) 179.
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ApplicationsApplications
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Pyro-Electric CrystalsPyro-Electric Crystals
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The Particle AcceleratorThe Particle Accelerator
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The Detector SystemsThe Detector Systems
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The Particle AcceleratorThe Particle Accelerator
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The Crystal and MountThe Crystal and Mount
LiTa0LiTa033
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The Inner ChamberThe Inner Chamber
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The Inner ChamberThe Inner Chamber
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X-Ray SpectrumX-Ray Spectrum
Energy in keV
0 20 40 60 80 100
Co
un
ts
1e+0
1e+1
1e+2
1e+3
1e+4
1e+5
1e+6Run 10 H @ 1 m Torr D2 – 7/10/07
Cu K-alpha
Cu K-beta
“Pile-up Peaks”
Ca Ti Cr
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Energy in keV
0 20 40 60 80
Co
un
ts
1
10
100
1000
10000
X-Ray SpectrumX-Ray Spectrum
Zn kβ
Fe kα
Cd kαCd kβ
Run 10 C @ 1 m Torr D2 – 7/10/07
Fe kβZn kαS kα/kβ
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Time (s)
0 300 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600
Ne
utr
on
Co
un
ts p
er
10
se
cs
0
2x101
4x101
6x101
8x101
102Te
mp
era
ture
(oC
)
20
40
60
80
100
120
140
160
<------------------Cooling------------------>
Co
un
ts p
er
ten
se
co
nd
s
100
101
102
103
104
105
Run 10 -D2 +C Target-7/10/07
CountCountss
76 Counts
49 Counts
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CountCountss
~80 keV / 2 millitorr
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What Now?What Now?•Vary current and pressure…Vary current and pressure…
•Attach a larger, more efficient Attach a larger, more efficient neutron detector…neutron detector…
•Use two pyro-electric crystals…Use two pyro-electric crystals…
•Reproduce results …Reproduce results …
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AcknowledgmentsAcknowledgments
Dr. Rand Watson Dr. Rand Watson
National Science FoundationNational Science Foundation
Texas A&M Cyclotron Texas A&M Cyclotron InstituteInstitute
Texas Southern UniversityTexas Southern University
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