Distribution of the 83Rb/83mKr activity on vacuum evaporated samples examined with the Timepix position sensitive detector

2007/12/22 by D. Venos, D. Vénos, J. Jakubek +8
Physics and Astronomy · #Nuclear Physics and Applications #Particle Detector Development and Performance #Radiation Detection and Scintillator Technologies #nucl-ex

paper · pdf · doi:10.48550/arxiv.0712.3860

8 pages, 3 figures, 2 tables

arxiv created 2007/12/22 · arxiv updated 2009/12/01

Abstract

Properties of vacuum evaporated 83Rb/83mKr sources of low-energy conversion electrons, which are under development for monitoring the energy scale stability of the Karlsruhe Tritium Neutrino experiment KATRIN, were examined by the Timepix pixel detector exhibiting the position resolution of at least 55 microm. No distinct local inhomogeneities in the surface distribution of 83Rb/83mKr were observed. The source diameter derived from the recorded image agrees within 5 % with that expected from evaporation geometry. More precise determination of the actual source diameter is complicated by Compton scattered electrons caused by 83Rb gamma-rays.

Related

• Long term stability of the energy of conversion electrons emitted from solid 83Rb/83mKr source
• Test of potential homogeneity in the KATRIN gaseous tritium source
• Measurement of the inhomogeneity of the KATRIN tritium source electric potential by high-resolution spectroscopy of conversion electrons from ^83mKr
• Conversion electrons used to monitor the energy scale of electron spectrometer near tritium endpoint - a simulation study
• Using krypton-83m to determine the neutrino-mass bias caused by a non-constant electric potential of the KATRIN source