Betekenis van:
photocathode
photocathode
Zelfstandig naamwoord
- a cathode that emits electrons when illuminated
Hyperoniemen
Voorbeeldzinnen
- photocathode area of greater than 20 cm2; and
- Television camera tubes; image converters and intensifiers; other photocathode tubes
- Photocathode area of greater than 20 cm2; and
- Photocathode area of greater than 20 cm2; and
- Television camera tubes; image converters and intensifiers; other photocathode tubes:
- Proximity focused image intensifier tubes having the photocathode deposited on a transparent conductive coating to decrease photocathode sheet resistance;
- 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;
- 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;
- 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)
- 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):
- 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:
- 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
- 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
- Electronic streak cameras, electronic framing cameras, tubes and devices, as follows: 1. Electronic streak cameras capable of 50 ns or less time resolution; 2. Streak tubes for cameras specified in 6A203.b.1.; 3. Electronic (or electronically shuttered) framing cameras capable of 50 ns or less frame exposure time; 4. Framing tubes and solid-state imaging devices for use with cameras specified in 6A203.b.3., as follows: a. Proximity focused image intensifier tubes having the photocathode deposited on a transparent conductive coating to decrease photocathode sheet resistance;
- 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