Study of XK and gamma photon emission following decay of 154Eu.
A joint project has been established between VNIIM (D.I. Mendeleyev Institute for Metrology) and LNHB (Laboratoire National Henri Becquerel) to determine as accurately as possible the X- and gamma-ray emission probabilities of 154Eu. Point sources were prepared by VNIIM, and absolute measurements of activity per unit mass were undertaken by both laboratories using coincidence, anti-coincidence and 4pi-gamma counting methods. Other point sources and one aliquot were also prepared for precise gamma-ray spectrometry measurements. Absolute photon emission probabilities were determined with a maximum uncertainty of 0.5% for the most intense lines, supporting the development of this nuclide as a multigamma standard.
Terechtchenko
E
E
D.I. Mendeleyev Institute for Metrology (VNIIM), 19 Moskovsky Prospect, St. Petersburg 198005, Russia. tee@vniim.ru
Rasko
M
M
Sepman
S
S
Zanevsky
A
A
Tuan
A Tran
AT
Amiot
M N
MN
Bobin
C
C
Morel
J
J
D000465:Algorithms; D005063:Europium / Q000032:analysis* / Q000592:standards*; D005720:Gamma Rays; D006207:Half-Life; D017785:Photons; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013051:Spectrometry, Gamma / Q000379:methods* / Q000592:standards; D014965:X-Rays
D005063:Europium