US4544520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser target fabrication, structure and method for its fabrication
Assignee: United States Department of Energy
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Filing: 1978-07-25
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Granted: 1985-10-01
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Expires: 1998-07-25
Abstract
Abstract The disclosure is directed to a laser target structure and its method of fabrication. The target structure comprises a target plate containing an orifice across which a pair of crosshairs are affixed. A microsphere is affixed to the crosshairs and enclosed by at least one hollow shell comprising two hemispheres attached together and to the crosshairs so that the microsphere is juxtapositioned at the center of the shell.
Inventors
- 👤 Eugene H. Farnum
- 👤 R. Jay Fries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:39
CPC Classifications
G; G21; G21B; G21B1/00; G21B1/11; G21B1/19; Y; Y02; Y02E; Y02E30/00; Y02E30/10; Y10; Y10S; Y10S376/00; Y10S376/916
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
A neutron producing laser target comprising: a pair of crossed glass fibers disposed across an orifice on a target supporting plate; a microsphere disposed in a quadrant formed by said crossed fibers glued at an equator tangentially to each of said fibers; and at least one shell enclosing said microsphere comprising two hemispheres glued to said fibers with said microsphere disposed essentially at the center thereof.
Claim 2
Dependent Claim
66 words
A neutron producing laser target comprising: a pair of crossed glass fibers disposed across an orifice on a target supporting plate; a microsphere disposed in a quadrant formed by said crossed fibers glued at an equator tangentially to each of said fibers; and at least one shell enclosing said microsphere comprising two hemispheres glued to said fibers with said microsphere disposed essentially at the center thereof.
Claim 3
Dependent Claim
19 words
The invention of claim 1 wherein said fibers are at most about 5 to about 10 μm in diameter.
Claim 4
Dependent Claim
18 words
The invention of claim 1 wherein said glass fibers are juxtapositioned essentially at right angles to one another.
Claim 5
Dependent Claim
15 words
The invention of claim 1 wherein said shell is about 100 μm in outside diameter.
Claim 6
Dependent Claim
23 words
The invention of claim 1 further comprising at least a second shell enclosing said first shell comprising two hemispheres glued to said fibers.
Claim 7
Dependent Claim
16 words
The invention of claim 5 wherein said second shell is essentially 500 μm in outside diameter.
References Cited (Backward Citations)
US4323420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |