caa a22 4500 39750392X CHVBK 20180308164539.0 cr unu---uuuuu 161202e19950801xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082759 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082759 Airborne Alpha Emitters Monitored by a Glass Fibre Scintillator Bundle [Elektronische Daten] [I.S. Kim, I.J. Lee, A. Appleby, E.A. Christman, M.J. Liepmann, G.H. Sigel Jr.] A trivalent cerium doped oxide glass scintillator possessing good thermal characteristics for fibre drawing was developed and drawn into 50 µm fibres. These fibres were close-packed to form a fibre bundle with pores between them. Air containing radon was allowed to flow through these pores. The strategy was to increase the mean residence time of radon atoms (222Rn) in the sensor and to give the alphas an immediate access to scintillators by providing a large detector surface area. A prototype radon gas sensor with a pore volume of 0.865 cm3 was built and tested with radon gas. The mean residence time of radon atoms at the sensor was found to be 113.2 s in contrast to the residence time of 0.12s calculated from the bulk flow rate. This increased residence time should provide a sensitivity enhancement of a factor of this magnitude per unit volume compared with a conventional scintillation detector. Radiation Protection Dosimetry Kim I.S. aut Lee I.J. aut Appleby A. aut Christman E.A. aut Liepmann M.J. aut Sigel Jr. G.H. aut Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 77-80 0144-8420 61:1-3<77 1995 61 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082759 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082759 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim I.S. aut NATIONALLICENCE 700 1- Lee I.J. aut NATIONALLICENCE 700 1- Appleby A. aut NATIONALLICENCE 700 1- Christman E.A. aut NATIONALLICENCE 700 1- Liepmann M.J. aut NATIONALLICENCE 700 1- Sigel Jr G.H. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 77-80 0144-8420 61:1-3<77 1995 61 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford