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EP 1 523 751 A1

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(43) Date of publication: 20.04.2005 Bulletin 2005/16 (21) Application number: 02756381.6 (22) Date of filing: 18.07.2002

(51) International Patent Classification (IPC)7: H01J 1/304, H01J 9/02, H01J 23/04 (86) International application number: PCT/US2002/021283 (87) International publication number: WO 2004/010450 (29.01.2004 Gazette 2004/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR (71) Applicant: United States Of America as presented by The Secretary of The Air Force Kirtland Air Force Base, NM 97117-5773 (US)	(72) Inventor: SHIFFLER, Donald, A., Jr. Albuquerque, NM 87109 (US) (74) Representative: Müller, Karl-Ernst et al Turmstrasse 22 40878 Ratingen 40878 Ratingen (DE)