| Zugriffsnummer | 11049 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | A telescope-design directional neutron spectrometer |
| Autor(in); Institution |
d'Errico, F.; Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, USA; Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione, Università degli Studi di Pisa, Pisa, ITALY
Giusti, V.; Università degli Studi di Pisa, Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione, Pisa, ITALY
Reginatto, Marcel; 6.5, Neutronenstrahlung, PTB-Braunschweig
Wiegel, Burkhard; 6.5, Neutronenstrahlung, PTB-Braunschweig
|
| Quelle/Jahr | Advances in nuclear particle dosimetry for radiation protection and medicine : Ninth Symposium on Neutron Dosimetry, Aula Conference Centre, Delft University of Technology, Delft, The Netherlands 28 September to 3 October 2003. Radiation Protection Dosimetry: 110 (2004), 1/4, 533 - 537 |
| ISSN | 0144-8420 |
| ISBN | 0-19-856713-8 |
| Verlag | Oxford [u.a.]: Oxford University Press |
| Konferenzangaben | Ninth Symposium on Neutron Dosimetry, Delft, 28, September - 3, October 2003, Niederlande |
| Freie Schlagworte | Neutron ; directional spectrometer ; superheated drop detectors |
| Zusammenfassung | A directional spectrometer that uses a superheated emulsion of dichlorotetrafluoroethane at the centre of a 30 cm diameter moderating-sphere of nylon-6. The system has a telescope-design wherein the detector views a narrow solid angle of about 1/6 steradians. The hydrogenous sphere effectively attenuates laterally incident neutrons, thus providing a strong angular dependence of the response. The central detector is sequentially operated at seven temperatures between 25 and 55 °C inorder to generate a matrix of nested response functions suitable for few-channel spectrometry. The response matrix of the system has been determined by calibrations with monoenergetic neutrons and by Monte Carlo neutron transport calculations.The double-differential unfolding method developed for this system applies the principle of maximum entropy and allows for the rigorous use of all a priori information. The spectrometer is intended for use in the mixed neutron/photon fields encountered in the nuclear power industry, being suitable for spatially distributed radiation sources with maximum neutron energies up to 10 MeV. |
