Target detection portal

Patent · Mon Dec 31 23:00:00 EST 2001

OSTI ID:874191

Linker, Kevin L ^[1]; Brusseau, Charles A ^[2]

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1. Albuquerque, NM
2. Tijeras, NM

A portal apparatus for screening persons or objects for the presence of trace amounts of target substances such as explosives, narcotics, radioactive materials, and certain chemical materials. The portal apparatus can have a one-sided exhaust for an exhaust stream, an interior wall configuration with a concave-shape across a horizontal cross-section for each of two facing sides to result in improved airflow and reduced washout relative to a configuration with substantially flat parallel sides; air curtains to reduce washout; ionizing sprays to collect particles bound by static forces, as well as gas jet nozzles to dislodge particles bound by adhesion to the screened person or object. The portal apparatus can be included in a detection system with a preconcentrator and a detector.

• Research Organization: SANDIA CORP
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 6334365
• OSTI ID: 874191
• Country of Publication: United States
• Language: English

Related Subjects

/73/
adhesion
air
airflow
amounts
apparatus
bound
chemical
chemical material
collect
concave-shape
configuration
cross-section
curtains
detection
detector
dislodge
exhaust
exhaust stream
explosives
facing
flat
forces
gas
horizontal
improved
included
interior
ionizing
jet
materials
narcotics
nozzles
one-sided
parallel
particles
person
persons
portal
preconcentrator
presence
radioactive
reduce
reduced
result
screened
screening
sprays
static
stream
substances
substantially
target
trace
trace amount
wall
washout