caa a22 4500 397504578 CHVBK 20180308164541.0 cr unu---uuuuu 161202e19950201xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082615 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082615 Wide-Range Neutron Dose Determination with CR-39 [Elektronische Daten] [A.R. Arneja, A.J. Waker] Optical density measurements of CR-39 irradiated with 252Cf neutrons and chemically etched with 6.5 N KOH solution have been used to determine neutron absorbed doses between 0.1 and 10 Gy. Optimum etching conditions will depend upon the absorbed dose. Since it is not always possible to know the range of absorbed dose on a CR-39 dosemeter collected from personnel and area monitor stations in a criticality accident situation, a three-step two-hour chemical etch at 60 oC has been found to be appropriate. If after a total of six hours of chemical etching the optical density is found to be below 0.04 for 500 nm light (transmission>90%) then further treatment in the form of electrochemical etching can be carried out to determine the lower absorbed dose. In this manner, absorbed doses below 0.1 Gy can be determined by counting tracks over a unit area. Radiation Protection Dosimetry Arneja A.R. aut Waker A.J. aut Radiation Protection Dosimetry Oxford University Press 58/3(1995-02-01), 201-204 0144-8420 58:3<201 1995 58 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082615 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082615 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arneja A.R. aut NATIONALLICENCE 700 1- Waker A.J. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 58/3(1995-02-01), 201-204 0144-8420 58:3<201 1995 58 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