Enhancement of soft X-ray lasing action with thin blade radiators

Patent · Fri Jan 01 00:00:00 EST 1988

OSTI ID:866720

Suckewer, Szymon ^[1]; Skinner, Charles H ^[2]; Voorhees, David R ^[3]

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1. Princeton Junction, NJ
2. Kingston, NJ
3. Hopewell, NJ

An enhancement of approximately 100 of stimulated emission over spontaneous emission of the CVI 182 Angstrom line was obtained in a recombining magnetically confined plasma column. The plasma was formed by focusing a CO.sub.2 laser beam on a carbon disc. A magnetic solenoid produced a strong magnetic field which confined the plasma to the shape of a column. A single thin carbon blade extended parallel to the plasma column and served to make the column axially more uniform and also acted as a heat sink. Axial and transverse measurements of the soft X-ray lasing action were made from locations off-set from the central axis of the plasma column. Multiple carbon blades located at equal intervals around the plasma column were also found to produce acceptable results. According to another embodiment 10 a thin coating of aluminum or magnesium was placed on the carbon disc and blade. The Z of the coating should preferably be at least 5 greater than the Z of the target. Measurements of the soft X-rays generated at 182 Angstroms showed a significant increase in intensity enhancement.

• DOE Contract Number: KC-05-01
• Assignee: Princeton University (Princeton, NJ)
• Patent Number(s): US 4771430
• OSTI ID: 866720
• Country of Publication: United States
• Language: English

Related Subjects

enhancement
soft
x-ray
lasing
action
blade
radiators
approximately
100
stimulated
emission
spontaneous
cvi
182
angstrom
line
obtained
recombining
magnetically
confined
plasma
column
formed
focusing
laser
beam
carbon
disc
magnetic
solenoid
produced
strong
field
shape
single
extended
parallel
served
axially
uniform
acted
heat
sink
axial
transverse
measurements
locations
off-set
central
axis
multiple
blades
located
equal
intervals
found
produce
acceptable
results
according
embodiment
10
coating
aluminum
magnesium
placed
z
preferably
target
x-rays
generated
angstroms
significant
increase
intensity
lasing action
significant increase
confined plasma
plasma column
central axis
heat sink
magnetic field
laser beam
soft x-ray
stimulated emission
magnetically confined
strong magnetic
spontaneous emission
soft x-rays
equal intervals
x-rays generated
/372/