Betekenis van:
photocathode

photocathode
Zelfstandig naamwoord
    • a cathode that emits electrons when illuminated

    Hyperoniemen


    Voorbeeldzinnen

    1. Television camera tubes; image converters and intensifiers; other photocathode tubes:
    2. Gate silicon intensifier target (SIT) videcon tubes, where a fast system allows gating the photoelectrons from the photocathode before they impinge on the SIT plate; c. Kerr or Pockels cell electro-optical shuttering;
    3. Thermionic, cold cathode or photocathode valves and tubes (for example, vacuum or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode ray tubes, television camera tubes)
    4. Thermionic, cold cathode or photocathode valves and tubes (for example, vacuum or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode ray tubes, television camera tubes):
    5. Photomultiplier tubes having both of the following characteristics: a. Photocathode area of greater than 20 cm2; and b. Anode pulse rise time of less than 1 ns. 6A203 Cameras and components, other than those specified in 6A003, as follows:
    6. Photomultiplier consisting of a photocathode tube with 9 dynodes, for light of a wavelength of 160 nm or more but not exceeding 930 nm, of a diameter not exceeding 14 mm and a height not exceeding 94 mm
    7. Photomultiplier consisting of a photocathode tube with 9 or 10 dyodes, for light of a wavelength of 160 nm or more but not exceeding 930 nm, of a diameter not exceeding 14 mm and a height not exceeding 94 mm
    8. Photomultiplier consisting of a photocathode tube with 9 or 10 dyodes, for light of a wavelength of 160 nm or more but not more than 930 nm, of a diameter of not more than 14 mm and a height of not more than 94 mm