| Zugriffsnummer | 23259 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Experimental determination of the 233U half-life |
| Autor(in); Institution |
Pommé, S.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Altzitzoglou, T.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Ammel, R. van; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Sibbens, G.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Eykens, R.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Richter, S.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Camps, J.; European Commission, Joint Research Centre, Institute of Reference Material and Measurements, Geel, BELGIUM
Kossert, Karsten; 6.1, Radioaktivität, PTB-Braunschweig
Janßen, Herbert; 6, Ionisierende Strahlung, PTB-Braunschweig
Garcia-Torano, E.; CIEMAT, Laboratorio de Metrología de Radiaciones Ionizantes, Madrid, SPAIN
Dur.aacute.n, T.; CIEMAT, Laboratorio de Metrología de Radiaciones Ionizantes, Madrid, SPAIN
Jaubert, F.; LNE-LNHB, Laboratoire National Henri Becquerel, CEA-Saclay, Gif-sur-Yvette Cedex, FRANCE
|
| Quelle/Jahr | Metrologia: 46 (2009), 5, 439 - 449 |
| ISSN | 0026-1394 |
| DOI | |
| URL | |
| Verlag | Bristol [u.a.]: IOP [u.a.] |
| Zusammenfassung | The half-life of 233U was determined by a specific activity method, in the frame of an international collaboration project of four metrology institutes. A purified, highly enriched 233U solution was prepared with certified concentration of uranium isotopes. the isotopic composition of the uranium material was determined by thermal ionization mass spectrometry. The ingrowth of daughter nuclides was calculated and confirmed by α-particle and γ-ray spectrometry measurements. Quantitative sources were prepared from aliquots of the 233U solution and their disintegration rate was determined by means of a α-particle counting at a defined small solid angle, liquid-scintillation counting and 4π counting in a pressurized porportional counter and in a CsI(TI) sandwich spectrometer. A half-life value of 1.5867 (14) x 105 a was obtained, in which the relative standard uncertainty amounts to 0.09 %. the result is lower thean the currently recommended value of 1.592 (2) x 105 a and a new best estimate of T1/2(233U) = 1.5903 (13) x 105 a was calculated from partially weighted mean of a set of published data. |
Zitierung
Pommé, S., Altzitzoglou, T., Ammel, R. V., Sibbens, G., Eykens, R., Richter, S., Camps, J., Kossert, K., Janßen, H., Garcia-Torano, E., Dur.aacute.n, T., & Jaubert, F. (2009). Experimental determination of the ²³³U half-life. Metrologia, 46(5), 439–449. https://doi.org/10.1088/0026-1394/46/5/007