title: Preliminary beta spectrum measurements using a magnetic spectrometer.
abstract: We report the performances of a double focusing magnetic beta spectrometer. The energy resolution was measured using conversion peaks of Cs-137 and Ba-133 at 0.73% for 624 keV, and 1.33% for 124 keV. The counting efficiency as a function of the energy was estimated using a P-32 source and was used to correct the measured spectra of Cs-137. The result was compared with the theoretical spectrum and we found a good agreement.
authors.affiliation: Institute of Radiation Physics, Grand Pré 1, 1007 Lausanne, Switzerland. Electronic address: Frederic.juget@chuv.ch.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Juget
authors.affiliation: Institute of Radiation Physics, Grand Pré 1, 1007 Lausanne, Switzerland.
authors.forename: Claude
authors.initials: C
authors.lastname: Bailat
authors.affiliation: Institute of Radiation Physics, Grand Pré 1, 1007 Lausanne, Switzerland.
authors.forename: François
authors.initials: F
authors.lastname: Bochud
keywords: Beta decay; Efficiency correction; Energy calibration; Magnetic spectrometer