Filter for isotopic alteration of mercury vapor

Patent · Sun Jan 01 04:00:00 EST 1989

OSTI ID:867003

Grossman, Mark W ^[1]; George, William A ^[2]

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1. Belmont, MA
2. Gloucestor, MA

A filter for enriching the .sup.196 Hg content of mercury, including a reactor, a low pressure electric discharge lamp containing a fill of mercury and an inert gas. A filter is arranged concentrically around the lamp. The reactor is arranged around said filter, whereby radiation from said lamp passes through the filter and into said reactor. The lamp, the filter and the reactor are formed of quartz, and are transparent to ultraviolet light. The .sup.196 Hg concentration in the mercury fill is less than that which is present in naturally occurring mercury, that is less than about 0.146 atomic weight percent. Hydrogen is also included in the fill and serves as a quenching gas in the filter, the hydrogen also serving to prevent disposition of a dark coating on the interior of the filter.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
• DOE Contract Number: AC03-76SF00098
• Assignee: GTE Products Corporation (Danvers, MA)
• Patent Number(s): US 4839524
• OSTI ID: 867003
• Country of Publication: United States
• Language: English

Related Subjects

/250/204/359/422/
146
196
alteration
arranged
arranged concentrically
atomic
atomic weight
coating
concentration
concentrically
containing
content
dark
discharge
discharge lamp
disposition
electric
electric discharge
enriching
fill
filter
formed
gas
hg
hg content
hydrogen
included
including
inert
inert gas
interior
isotopic
isotopic alteration
lamp
lamp containing
light
mercury
mercury vapor
naturally
naturally occurring
occurring
passes
percent
pressure
pressure electric
prevent
quartz
quenching
quenching gas
radiation
reactor
serves
serving
transparent
ultraviolet
ultraviolet light
vapor
violet light
weight
weight percent
whereby
whereby radiation