title: Absolute determination of activity per mass and half-life measurements of 152Eu.
abstract: A solution of 152Eu was absolutely standardized by the 4pi beta (PPC)-gamma (HPGe) coincidence counting method as part of an intercomparison program coordinated by Bureau International des Poids et Mesures. The measured activity has been used to determine the calibration factor of the LNMRI reference ionization chamber for 152Eu. The half-life of 152Eu was also determined by means of a 4pi gamma ionization chamber to be (4963.6+/-15.3) days, and compared with others published values.
authors.affiliation: LNMRI/IRD/CNEN, Rio de Janeiro, Brazil. carlos@ird.gov.br
authors.forename: SilvaCarlosJ
authors.initials: S
authors.lastname: da
authors.forename: José U
authors.initials: JU
authors.lastname: Delgado
authors.forename: Akira
authors.initials: A
authors.lastname: Iwahara
authors.forename: Luiz
authors.initials: L
authors.lastname: Tauhata
authors.forename: Roberto
authors.initials: R
authors.lastname: Poledna
authors.forename: Rex N
authors.initials: RN
authors.lastname: Alves