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Type ( Colour) | Peak Wavelength (nm) | Photons / Electron @ 5 kV | Decay Characteristic |
P11 (Blue) | 446 | 120 | Fast initial decay with long decay at low level. 50 s to 1% |
P20 (Green) Fast | 540 | 320 | Fast initial decay with long decay at low level. 1 ms to 1% |
P24 (Blue) | 500 | 120 | 10 s to 10%(1) |
P31 (Green) | 550 | - | 1 ms, good exponential |
P43 (Green) | 548 | 240 | 1.2 ms/decade, true exponential |
P46 (Green) | 530 | 55 | 300 ns |
P47 (Blue) | 410 | 64 | 80 ns |
FS | 513,668,768 | 96 | 12 ms to 10 % |
GOS* | 420 | - | 50 ns to 10 % 110 ns to 1 % |
GM10-50 | GM150-20 | GM15-4 | Dual GM1KV |
Gate module with :- 50 ns minimum pulse width. + 50 V / -200 V Gate output | Gate module with :- 20 ns minimum pulse width. + 50 V / -200 V Gate output | Gate module with :- 3 ns minimum pulse width. + 50 V / -200 V Gate output | Gate module with :- 100 ns minimum pulse width. 400 V Gate output Isolated up to 2 kV |
Type | ST-Y | ST-X | Photochron 2 DRS Ultranac EEV P855 EEV P8307 | Photochron 3 EMI 9898 | Photochron 5 |
Photocathode Size | 35 x 35 | 18 x 18 | 8 x 9 mm maximum | 12 mm Slit | 12 mm Slit |
Synchroscan | Limited | Limited | 88 MHz | - | 125 MHz plus |
Time Resolution | 5 ps | 3 ps | ~ 3 ps | 1 ps | < 1 ps |
Magnification | 0.7 – 1.5 | 0.7 – 1.5 | 2 | - | 2 - 4 |
Framing Option | Cathode – Mesh | Cathode - Mesh | Deflector Plate Lock | No | Deflector Plate Lock |
Overall Length | 250 mm | 147 mm | 321.5 mm | - | 322 mm |
Diameter | 10mm | 13mm | 25mm | 40mm |
Rise Time | 70ps | 100ps | 250ps | 500ps |
FWHM | 150ps | 250ps | 500ps | 1000ps |
3dB frequency Response | 1600MHz | 750MHz | 500MHz | 250MHz |
Transit Time Jitter | ~15ps | ~15ps | ~50ps | ~100ps |