| Channel | Rise Time | Fall Time | Undershoot | Picture |
| 1 (Red) | 120 +/- 60 ns | 85 +/- 15 mue s | 2 +/- 1 % |
|
| 2 (Blue) | 120 +/- 60 ns | 80 +/- 10 mue s | 3 +/- 1.5 % |
|
| 3 (Green) | 130 +/- 70 ns | 80 +/- 10 mue s | 1.5 +/- 0.5 % |
|
| 4 (Black) | 120 +/- 60 ns | 80 +/- 10 mue s | 2 +/- 1 % |
|
Polarity of the pulses is negative. The picture files are grouped in 4, each group corresponds
Please note the following:
of one channel, described by the second digit in the file name; sc1_2_3 means ch.2. pic.3.
The four pictures of each channel are acquired at identical conditions and show different pulses.
The source used is 22-Na.
- Since the rise time of the pulse (for the negative pulses this is fall time) is defined as the
time between 10% and 90% of the amplitude of the pulse, the different amplitude pulses
have different rise times. Therefore, the variations in the table are in the order of 50%.
- The rise time depends strongly on the physics of the interactions inside and those effects
affect the rise time and its variations.
- The fall time is fixed by circuitry of the preamplifier; however, noise contribution also
affects its determination.
- The pulses are aquired 'in situ', thus some reasonable ambient noise is also included.
Ivan Kojouharov