Influence of Krypton Seeding on DD Fusion Neutron Production: Evaluation Methodology for Plasma Focus Optimization
A sub-kilo-Joule plasma focus device (FMPF- 3, 14 kV/235 J) was operated with deuterium–krypton admixtures (of 1, 2 and 5 % Kr by volume) to study the influence of admixture ratio on neutron yield (Yn). Experiments were performed for different insulator sleeve lengths and cathode geometries. Th...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer US
2015
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| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/227/7/Influence%20of%20Krypton%20Seeding%20on%20DD%20Fusion%20Neutron%20Production.pdf http://eprints.intimal.edu.my/227/ |
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| Summary: | A sub-kilo-Joule plasma focus device (FMPF-
3, 14 kV/235 J) was operated with deuterium–krypton
admixtures (of 1, 2 and 5 % Kr by volume) to study the
influence of admixture ratio on neutron yield (Yn). Experiments
were performed for different insulator sleeve
lengths and cathode geometries. The results reveal that for
a carefully optimized electrode geometry the highest
average neutron yield is obtained with pure deuterium as
the operating gas, whereas krypton seeding leads to a
reduction in Yn. We argue that the electrode geometry and
electrical coupling play critical roles in determining the
influence of gas admixtures; and that for an optimized
plasma focus device D2-Kr admixtures may give little or no
neutron yield enhancement relative to pure D2 operation
and so the admixture operation is an evaluation methodology
to determine the level of optimization of device
geometry. |
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