Home › Forum › Hardware › SI-22G Tube dead time?
I am looking for the SI-22G tube its dead time but can’t seem to find it.
From Radu’s personal site PocketMagic I can find it for the SMB-20 which is:
Minimum Dead Time (at U=400V, micro sec): 190
Wondering is someone might know this for the SI-22G, for the moment I’m using 190 to recalculate it for my DIY GM counter.
For those interested, the code is:
// Tube dead time in seconds
// SI-22G = 0.000xxx seconds
// SBM-20 = 0.000190 seconds
#define tubeDeadTime 0.000190
actual_cps_1 = (cps_1 / (1- (cps_1 * tubeDeadTime)));
where CPS is Counts Per Second. The _1 is used for my first tube (out of 2).
I did not find that info on the SI22G either.
But I found this document which explains on page 6 how to calculate the dead time by doing some easy measurements.
Thanks! I’ll check and try it out!