Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DES72657Aexternal-prioritypatent/DE1291022B/de
Application filed by Siemens and Halske AG, Siemens AGfiledCriticalSiemens and Halske AG
Priority to FR888725ApriorityCriticalpatent/FR1315580A/fr
Application grantedgrantedCritical
Publication of FR1315580ApublicationCriticalpatent/FR1315580A/fr
H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
H01J23/02—Electrodes; Magnetic control means; Screens
H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
H01J23/087—Magnetic focusing arrangements
H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
FR888725A1961-02-221962-02-21Système d'aimants permanents pour créer un champ magnétique destiné à guider unfaisceau d'électrons
ExpiredFR1315580A
(fr)
Permanentmagnetsystem zur Erzeugung eines Magnetfeldes fuer die gebuendelte Fuehrung eines Elektronenstrahls ueber eine groessere Wegstrecke, insbesondere fuer Laufzeitroehren
Système d'aimants permanents pour produire un champ magnétique longitudinal, destiné à guider, en le concentrant, le faisceau électronique d'un tube à temps de transit