title: Preliminary results on bubble detector as personal neutron dosemeter.
abstract: The bubble detector is demonstrated as one of the best suitable neutron detectors for neutron dose rate measurements in the presence of high-intense gamma fields. Immobilisation of a volatile liquid in a superheated state and achieving uniform distribution of tiny superheated droplets were a practical challenge. A compact and reusable bubble detector with high neutron sensitivity has been developed at the Indira Gandhi Centre for Atomic Research by immobilising the superheated droplets in a suitable polymer matrix. Two types of bubble detectors have been successfully developed, one by incorporating isobutane for measuring fast neutron and another by incorporating Freon-12 for both fast and thermal neutron. The performance of the detector has been tested using 5 Ci Am-Be neutron source and the results are described.
authors.affiliation: Radiological Safety Division, Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India. pon@igcar.gov.in
authors.forename: D
authors.initials: D
authors.lastname: Ponraju
authors.forename: H
authors.initials: H
authors.lastname: Krishnan
authors.forename: S
authors.initials: S
authors.lastname: Viswanathan
authors.forename: R
authors.initials: R
authors.lastname: Indira
mesh_terms: D000576:Americium / Q000032:analysis; D001608:Beryllium / Q000032:analysis; D002138:Calibration; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D005720:Gamma Rays; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D009502:Neutrons; D055848:Nuclear Power Plants; D016273:Occupational Exposure; D011108:Polymers / Q000737:chemistry; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000379:methods; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods
chemical_list: D011108:Polymers; D001608:Beryllium; D000576:Americium