| Zugriffsnummer | 31396 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | New PTB thermal neutron calibration facility: first results |
| Autor(in); Institution |
Luszik-Bhadra, Marlies; 6.4, Ionen- und Neutronenstrahlung, PTB-Braunschweig
Reginatto, Marcel; 6.4, Ionen- und Neutronenstrahlung, PTB-Braunschweig
Wershofen, Herbert; 6.1, Radioaktivität, PTB-Braunschweig
Wiegel, Burkhard; 6.4, Ionen- und Neutronenstrahlung, PTB-Braunschweig
Zimbal, Andreas; 6.4, Ionen- und Neutronenstrahlung, PTB-Braunschweig
|
| Quelle/Jahr | Radiation Protection Dosimetry: 161 (2014), 1/4, 352 - 356 |
| ISSN | 0144-8420 (PRINT) ; 1742-3406 (ONLINE) |
| DOI | |
| Verlag | Oxford: Oxford Univ. Press |
| Konferenzangaben | NEUDOS12, 12th Neutron and Ion Dosimetry Symposium, Aix-en-Provence, 03-07, June, 2013, France |
| Zusammenfassung | A new thermal neutron calibration facility based on a moderator assembly has been set up at PTB. It consists of 16 241Am-Be radionuclide sources mounted in a graphite block, 1.5 m wide, 1.5 m high and 1.8 m deep. The sources are distributed to eight different positions, at a mean distance of ∼1.25 m from the front face of the moderator. The neutron field at the reference position, 30 cm in front of the moderator device and 75 cm above the floor, has been characterised using calculations, Bonner sphere measurements and gold foil activation. First results are shown. The field is highly thermalised: 99 % in terms of fluence. It is quite homogenous within a 20 cm×20 cm area, but the absolute value of the thermal neutron fluence rate is small and yields an ambient dose equivalent rate of 3 μSv h-1. |
