- Paul NordJohn, Working to get better timestamped data. It looks like I can easily get 20 second bins.
- /snip/
- Tom Van BaakThere's been mention of timestamping in this thread
- /snip/
...
On the other end of the performance spectrum you can do timestamping
using any old laptop and just a serial port. A win32 example is here:
It has its limitations but it shows that a lowly serial port pin can be
used as a trigger for time stamp recording. I use this for quick 'n
dirty low rate Geiger measurements. For more precision and no dead time
I use dedicated hardware for the counting & timing and the PC just for
data logging.
/tvb^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Where students are provided with a GM tube like the LND712 with a dead time longer than 90 microseconds and recovery time on top, and a timer which may resolve 50 millisecond increments, the mention of time stamp devices with resolutions in the picosecond range does not seen specially helpful.The LND 712 (or equivalent) tube in the VernierRadiation Monitor (VRM‐BTD) is a popular choice.It contains an inert gas, typically neon, at a low pressure on the order of0.1 atm. The tube, itself, is a metal cylinder, has a thin wire along its axis, and a thin mica end window. https://www.vernier.com/files/innovate/determining_the_resolving_time_of_a_geiger-mueller_tube.pdf ;