FR985831A - Device for the production of weakly divergent corpuscular rays - Google Patents

Device for the production of weakly divergent corpuscular rays

Info

Publication number
FR985831A
FR985831A FR985831DA FR985831A FR 985831 A FR985831 A FR 985831A FR 985831D A FR985831D A FR 985831DA FR 985831 A FR985831 A FR 985831A
Authority
FR
France
Prior art keywords
production
weakly divergent
corpuscular rays
corpuscular
rays
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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
Application filed by BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Application granted granted Critical
Publication of FR985831A publication Critical patent/FR985831A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
    • H01J37/06—Electron sources; Electron guns
    • H01J37/063—Geometrical arrangement of electrodes for beam-forming

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Beam Exposure (AREA)
FR985831D 1948-05-10 1949-05-10 Device for the production of weakly divergent corpuscular rays Expired FR985831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH985831X 1948-05-10

Publications (1)

Publication Number Publication Date
FR985831A true FR985831A (en) 1951-07-24

Family

ID=4551548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR985831D Expired FR985831A (en) 1948-05-10 1949-05-10 Device for the production of weakly divergent corpuscular rays

Country Status (4)

Country Link
CH (1) CH265972A (en)
DE (1) DE809221C (en)
FR (1) FR985831A (en)
NL (1) NL74193C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466096A1 (en) * 1979-09-19 1981-03-27 Philips Nv ELECTRON SOURCE WITH A PROFILE THREAD

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466096A1 (en) * 1979-09-19 1981-03-27 Philips Nv ELECTRON SOURCE WITH A PROFILE THREAD
WO1981000929A1 (en) * 1979-09-19 1981-04-02 Philips Nv Electron beam apparatus and electron beam source therefor

Also Published As

Publication number Publication date
DE809221C (en) 1951-07-26
NL74193C (en)
CH265972A (en) 1949-12-31

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