|colspan="2" | Pulse height spectrum at fixed pulser intensity and temperature 25°C, and increasing bias voltage V<sub>b</sub> = 69.5V (upper left), 70.0V (upper right), 70.2V (lower left), and 71.0V (lower right). | |colspan="2" | Pulse height spectrum at fixed pulser intensity and temperature 25°C, and increasing bias voltage V<sub>b</sub> = 69.5V (upper left), 70.0V (upper right), 70.2V (lower left), and 71.0V (lower right). |