$^{80m}$Br/$^{80}$Br: a new electron-$\gamma$ - PAC Probe

Conversion electron-$\gamma$ PAC measurements of the 49 keV - 37 keV cascade in $^{80}$Br through the intermediate 2$^{-}$ state with T$_{1/2}$=7.4 ns were performed with a system of two magnetic lens spectrometers and two BaF$_{2}$ scintillation detectors. The parent $^{80m}$Br activity with half-l...

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Detalles Bibliográficos
Autores principales: Correia, J G, Haas, H, Araújo, J P, Marques, J G, Soares, J C, Melo, A A
Lenguaje:eng
Publicado: 2001
Materias:
Condensed Matter
Acceso en línea:http://cds.cern.ch/record/591675
Descripción
Sumario:Conversion electron-$\gamma$ PAC measurements of the 49 keV - 37 keV cascade in $^{80}$Br through the intermediate 2$^{-}$ state with T$_{1/2}$=7.4 ns were performed with a system of two magnetic lens spectrometers and two BaF$_{2}$ scintillation detectors. The parent $^{80m}$Br activity with half-life of 4.4 hrs was implanted into Ni, Zn and graphite at the ISOLDE separator at CERN. The observed interaction frequency in the nickel matrix is in good agreement with the known value of the hyperfine field for Br in Ni and the magnetic moment of the 2$^{-}$ state. From the measured quadrupole interaction in Zn and graphite the electric field gradients at Br were obtained.

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