title: An active drop counting device using condenser microphone for superheated emulsion detector.
abstract: An active device for superheated emulsion detector is described. A capacitive diaphragm sensor or condenser microphone is used to convert the acoustic pulse of drop nucleation to electrical signal. An active peak detector is included in the circuit to avoid multiple triggering of the counter. The counts are finally recorded by a microprocessor based data acquisition system. Genuine triggers, missed by the sensor, were studied using a simulated clock pulse. The neutron energy spectrum of (252)Cf fission neutron source was measured using the device with R114 as the sensitive liquid and compared with the calculated fission neutron energy spectrum of (252)Cf. Frequency analysis of the detected signals was also carried out.
authors.affiliation: Nuclear and Atomic Physics Division, Saha Institute of Nuclear Physics, Kolkata, India. mala.das@saha.ac.in
authors.forename: Mala
authors.initials: M
authors.lastname: Das
authors.forename: A S
authors.initials: AS
authors.lastname: Arya
authors.forename: C
authors.initials: C
authors.lastname: Marick
authors.forename: D
authors.initials: D
authors.lastname: Kanjilal
authors.forename: S
authors.initials: S
authors.lastname: Saha