A new type of picosecond streak image tube has been developed. The electron optical system of this tube consists of a curved photocathode, a curved mesh, a spherecal focous electrode and an anode cone. The deflector with ultroshort parallel plate construction is adopted. S20 photocathode is made on the Cu-Ni mesh substrate having surface resistivity Qf 300*Cland with transmissivity of 30% for white light. The measured photosensitivity is up to,140,11A/1m. The curved mesh of 50 lines/mm is fabricated by using special technique. P11 phosphor screen is deposited on a fibre faceplate having working area of P50 mm. The obtained static optimum spatial resolution is 40 1μm. The deflection sensitivity of the deflector is 4.2 cm/kv. The magnification of the tube is 2 and it is spatial distortion free. The dynamic measurements show that at present the temporal resolution reaches 2 ps and the useful dynamic range is greater than 256 for the temporal resolution of 10 ps. The slit streak image curvature phenomena has been eliminated.
"A Picosecond Streak Image Tube", Proc. SPIE 0491, 16th Intl Congress on High Speed Photography and Photonics, (1 February 1985); doi: 10.1117/12.967994; https://doi.org/10.1117/12.967994