FR2366689A1 - NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS - Google Patents

NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS

Info

Publication number
FR2366689A1
FR2366689A1 FR7540299A FR7540299A FR2366689A1 FR 2366689 A1 FR2366689 A1 FR 2366689A1 FR 7540299 A FR7540299 A FR 7540299A FR 7540299 A FR7540299 A FR 7540299A FR 2366689 A1 FR2366689 A1 FR 2366689A1
Authority
FR
France
Prior art keywords
chains
electron
photon
electrons
new pulse
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.)
Withdrawn
Application number
FR7540299A
Other languages
French (fr)
Inventor
Guy Roziere
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7540299A priority Critical patent/FR2366689A1/en
Priority to JP16094376A priority patent/JPS5285873A/en
Priority to GB5420476A priority patent/GB1570221A/en
Priority to DE19762659619 priority patent/DE2659619C3/en
Publication of FR2366689A1 publication Critical patent/FR2366689A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1645—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using electron optical imaging means, e.g. image intensifier tubes, coordinate photomultiplier tubes, image converter

Abstract

L'invention concerne les chaînes de visualisation fonctionnant en impulsions, à conversion photons-électrons. Au lieu des photomultiplicateurs utilisés pour observer l'écran cathodoluminescent terminal des étages intensificateurs des chaînes de l'art antérieur, l'invention prévoit, pour la conversion des électrons rapides de ce dernier étage en électrons lents, une cible à émission secondaire, placée à peu près à l'endroit où se trouvait cet écran dans ces chaînes, associée à deux grilles extractrice et de freinage (ensemble 7), assurant une multiplication électrons lents/électrons rapides élevée. Quatre plaques 13 recueillent les électrons secondaires. Mêmes applications que les chaînes de l'art antérieur, scintigraphie en particulier.The invention relates to display chains operating in pulses, with photon-electron conversion. Instead of the photomultipliers used to observe the terminal cathodoluminescent screen of the intensifier stages of the chains of the prior art, the invention provides, for the conversion of the fast electrons of this last stage into slow electrons, a secondary emission target, placed at roughly where this screen was located in these chains, associated with two extractor and brake grids (set 7), ensuring a high slow electron / fast electron multiplication. Four plates 13 collect the secondary electrons. Same applications as the chains of the prior art, in particular scintigraphy.

FR7540299A 1975-12-31 1975-12-31 NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS Withdrawn FR2366689A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7540299A FR2366689A1 (en) 1975-12-31 1975-12-31 NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS
JP16094376A JPS5285873A (en) 1975-12-31 1976-12-27 Pulse image formation array
GB5420476A GB1570221A (en) 1975-12-31 1976-12-29 Visualization device of an object emitting radioactive pulses
DE19762659619 DE2659619C3 (en) 1975-12-31 1976-12-30 Scintillation camera with a photocathode, from which electrons emanate according to a distribution and are imaged onto an impact disk under acceleration, as well as with four electrodes that deliver signals corresponding to the location of each electron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7540299A FR2366689A1 (en) 1975-12-31 1975-12-31 NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS

Publications (1)

Publication Number Publication Date
FR2366689A1 true FR2366689A1 (en) 1978-04-28

Family

ID=9164385

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7540299A Withdrawn FR2366689A1 (en) 1975-12-31 1975-12-31 NEW PULSE VISUALIZATION CHAIN USING PHOTON AND ELECTRON CONVERSIONS

Country Status (4)

Country Link
JP (1) JPS5285873A (en)
DE (1) DE2659619C3 (en)
FR (1) FR2366689A1 (en)
GB (1) GB1570221A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4221967A (en) * 1978-03-10 1980-09-09 Diagnostic Information, Inc. Gamma ray camera
US4602282A (en) * 1982-06-29 1986-07-22 Hamamatsu Photonics Kabushiki Kaisha Measuring devices for two-dimensional photon-caused or corpuscular-ray-caused image signals
GB9122348D0 (en) * 1991-10-22 1991-12-04 Nat Res Dev Radiation detectors

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727183A (en) * 1948-12-22 1955-12-13 Westinghouse Electric Corp Radiation detector of the scanning type
US3209201A (en) * 1960-06-17 1965-09-28 Hal O Anger Beam position identification means
GB1159347A (en) * 1967-07-12 1969-07-23 Mullard Ltd Improvements in or relating to Image Intensifiers and the like
FR1586904A (en) * 1968-08-01 1970-03-06

Also Published As

Publication number Publication date
DE2659619B2 (en) 1981-04-16
DE2659619A1 (en) 1977-07-07
GB1570221A (en) 1980-06-25
DE2659619C3 (en) 1981-12-17
JPS5285873A (en) 1977-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse