# I Count rate

1. May 15, 2017

### Silviu

Hello! How is the count rate of a detector defined (I need for a scintillator)? It is just the number of particle hitting the detector per second times the efficiency of the detector at that energy?

2. May 15, 2017

### Staff: Mentor

It is just the rate of detections, the number of detections per time. If you don't have relevant dead times, it is the number of particles hitting the detector times the efficiency.

3. May 15, 2017

### ChrisVer

The words speak for themselves sometimes, it is the number of counts (count) per unit of <something> (rate)...

Now how would you go about to model this for a detector?
If you have $N$ incident particles per <something> and you measure $N'$, how is $N'$ and $N$ related?
$N' = \frac{N'}{N} N$
the fraction is nothing else than the total efficiency (it can be affected by several sources).

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted