title: Determination of gamma-ray emission probabilities per decay of Ga-68.
abstract: The measurement of the gamma-ray emission probabilities per decay of 1077 keV of (68)Ga is presented. The standardization system consists of a gas-flow proportional counter in 4π geometry coupled to an HPGe detector for the gamma-ray detection. The gamma-ray emission probabilities per decay were measured in an HPGe gamma-ray spectrometer. The weaker gamma-ray intensities of (68)Ga were measured in a relative way, making use of an uncalibrated ampoule of (68)Ge-(68)Ga in radioactive equilibrium, and considering the absolute result from the 1077 keV gamma-ray.
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil. Electronic address: koskinas@ipen.br.
authors.forename: Marina F
authors.initials: MF
authors.lastname: Koskinas
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Flavio W
authors.initials: FW
authors.lastname: Lacerda
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Izabela T
authors.initials: IT
authors.lastname: Matos
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Tatiane S
authors.initials: TS
authors.lastname: Nascimento
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Ione M
authors.initials: IM
authors.lastname: Yamazaki
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Mauro N
authors.initials: MN
authors.lastname: Takeda
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil.
authors.forename: Mauro S
authors.initials: MS
authors.lastname: Dias
keywords: Ga-68; Gamma-ray emission; Software coincidence; Standardization