| Zugriffsnummer | 24577 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Determination of photon emission probabilities of radionuclides using a Si(Li) detector calibrated by the primary standard source, BESSY |
| Autor(in); Institution |
Arnold, Dirk; 6.301, Radionuklidanalysen, PTB-Braunschweig
Ulm, Gerhard; 9.23, Vakuum-UV-Strahlungsmeßtechnik, PTB-Berlin
|
| Quelle/Jahr | Nuclear Instruments and Methods in Physics Research A: 339 (1994), 1/2, 43 - 48 |
| ISSN | 0168-9002 |
| DOI | |
| Verlag | Amsterdam: Elsevier, North-Holland |
| Zusammenfassung | BESSY is an electron storage ring BESSY which is optimized for use as a primary standard source for the infrared to X-ray region. The relative uncertainty of the spectral photon fluxΦE is less than 0.45% (1 σ) in the spectral range 5 < E < 15 keV. Measurements in undispersed synchrotron radiation produced a quantum detection efficiency for a Si(Li) detector with relativeuncertainties of less than 0.5%. The calibrated detector was used to measure the photon flux of radioactive standards of known activity (57C0, 65Zn, and 88Y) in the photon energy range from 5 to 15 keV. From these measurements, the kα X-ray lines of 57Co p(6.4 keV) = 0.501(5) und 65Zn, p(8.0 keV) = 0.346(3) and for the ratio p (57Co; 14,4 keV) / p (88Y; 14,1 keV) = 0.179(4) have small uncertainties and are not affected by uncertainties in fluorescence yields. They confirm recommended data. |
Zitierung
Arnold, D. & Ulm, G. (1994). Determination of photon emission probabilities of radionuclides using a Si(Li) detector calibrated by the primary standard source, BESSY. Nuclear Instruments and Methods in Physics Research A, 339(1/2), 43–48. https://doi.org/10.1016/0168-9002(94)91776-0