Technique for charged particle track detection in bubble chambers

Technique for charged particle track detection in bubble chambers, including the chamber irradiation by particles from accelerator during the chamber sensibility time, two illuminations of the volume and the operation of the first image subtraction from the second one in the course of the picture scanning to separate the desired event from the background events, is proposed. To increase the method technologic effectiveness, the both chamber volume illuminations are performed within separated chromatic intervals, and images are recorded to colour or two-region film. The operation of the first image subtraction from the second one in the course of the picture scanning is performed using two photodetectors with scanning ray separation into two ones and transmitting these rays through corresponding light filters in front of the photodetectors