High concentration of deuterium in palladium from plasma ion implantation

Journal Article · Thu Oct 31 23:00:00 EST 1991 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859799· OSTI ID:5217100

Uhm, H S; Lee, W M ^[1]

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1. Naval Surface Warfare Center, White Oak, Silver Spring, Maryland (USA)

Based on a theoretical calculation, a new scheme to increase deuterium density in palladium over its initial value is presented. This deuterium enrichment scheme makes use of plasma ion implantation. A cylindrical palladium rod (target) preloaded with deuterium atoms, coated with a diffusion-barrier material, is immersed in a deuterium plasma. The palladium rod is connected to a high-power modulator which provides a series of negative-voltage pulses. During these negative pulses, deuterium ions fall into the target, penetrate the diffusion barrier, and are implanted inside the palladium. For reasonable system parameters allowed by present technology, it is found from theoretical calculations that the saturation deuterium density after prolonged ion implantation can be several times the palladium atomic number density. Assuming an initial deuterium density, {ital n}{sub 0}=4{times}10{sup 22} cm{sup {minus}3}, it is also found that the deuterium density in palladium can triple its original value within a few days of the ion implantation for a reasonable target size. Because of the small diffusion coefficient in palladium, the incoming ions do not diffuse quickly inward, thereby accumulating near the target surface at the beginning of the implantation.

• OSTI ID: 5217100
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 3:11; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CHARGED PARTICLES
CHEMISTRY
CONCENTRATION RATIO
DEUTERIUM
DEUTERIUM IONS
DIFFUSION BARRIERS
ELECTROCHEMISTRY
ELEMENTS
ENRICHMENT
HYDROGEN ISOTOPES
ION IMPLANTATION
IONS
ISOTOPES
LIGHT NUCLEI
METALS
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
ODD-ODD NUCLEI
PALLADIUM
PENETRATION DEPTH
PLATINUM METALS
STABLE ISOTOPES
SYNTHESIS
THERMONUCLEAR REACTIONS
TRANSITION ELEMENTS