Patent US3229419A successfully refreshed from Google Patents.
Patent US3899681A successfully refreshed from Google Patents.
US3899681A
Expired / Lapsed
US
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Electron beam device
Assignee: United States Department of Energy
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Filing: 1974-04-01
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Granted: 1975-08-12
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Expires: 1994-04-01
Abstract
Abstract An electron beam device in which a hollow target is symmetrically irradiated by a high energy, pulsed electron beam about its periphery and wherein the outer portion of the target has a thickness slightly greater than required to absorb the electron beam pulse energy.
Inventors
- 👤 Everet H Beckner
- 👤 Milton J Clauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:27
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/02; H05H1/22; Y; Y02; Y02E; Y02E30/00; Y02E30/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
An electron beam device comprising a target consisting essentially of a hollow shell of an electron absorbing material, said shell having a thickness to diameter ratio of from about 1 to 5 to about 1 to 50, a thickness of from about 0.1 to 1.0 mm sufficient to absorb in outer portions of said shell substantially all electrons impinging on the shell, and hydrogen isotope disposed in the interior thereof; and means adjacent and generally encircling said shell for producing a high energy pulse beam of electrons circumferentially encompassing and focused on and substantially encircling said target for accelerating inner portions of said shell inwardly against said hydrogen isotope.
Claim 2
Dependent Claim
109 words
An electron beam device comprising a target consisting essentially of a hollow shell of an electron absorbing material, said shell having a thickness to diameter ratio of from about 1 to 5 to about 1 to 50, a thickness of from about 0.1 to 1.0 mm sufficient to absorb in outer portions of said shell substantially all electrons impinging on the shell, and hydrogen isotope disposed in the interior thereof; and means adjacent and generally encircling said shell for producing a high energy pulse beam of electrons circumferentially encompassing and focused on and substantially encircling said target for accelerating inner portions of said shell inwardly against said hydrogen isotope.
Claim 3
Dependent Claim
40 words
The device of claim 1 wherein said electron beam producing means includes a diode discharge means for generating a pulsed electron beam having voltage of from about 0.5 to 5 megavolts of from about 5 to 20 nanoseconds in duration.
Claim 4
Dependent Claim
31 words
The device of claim 1 wherein said hydrogen isotope is selected from the group consisting of deuterium and tritium and mixtures thereof with from about 10 to 1,000 micrograms of isotope.
Claim 5
Dependent Claim
17 words
The device of claim 3 wherein said deuterium and tritium are present in about equal atomic concentrations.
Claim 6
Dependent Claim
23 words
The device of claim 1 wherein said shell is of sufficient thickness to block substantially all of said electrons from said hydrogen isotope.
Claim 7
Dependent Claim
28 words
The device of claim 5 wherein said shell includes an outer layer for absorption of said electron beam and an inner layer for acceleration against said hydrogen isotope.
Claim 8
Dependent Claim
12 words
The device of claim 1 wherein said target is spherical in shape.
Claim 9
Dependent Claim
70 words
A target for use in an electron beam device consisting essentially of a hollow spherical shell of an electron absorbing material, said shell having a thickness to diameter ratio of from about 1 to 5 to about 1 to 50, a thickness of from about 0.1 to 1.0 mm sufficient to absorb substantially all electrons impinging on the shell from said device, and hydrogen isotope disposed in the interior thereof.
Claim 10
Dependent Claim
70 words
A target for use in an electron beam device consisting essentially of a hollow spherical shell of an electron absorbing material, said shell having a thickness to diameter ratio of from about 1 to 5 to about 1 to 50, a thickness of from about 0.1 to 1.0 mm sufficient to absorb substantially all electrons impinging on the shell from said device, and hydrogen isotope disposed in the interior thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |