A new technique for elucidating $\beta$-decay schemes which involve daughter nuclei with very low energy excited states

Autor: Venhart, M., Wood, J. L., Boston, A. J., Cocolios, T. E., Harkness-Brennan, L. J., Herzberg, R. -D., Joss, D. T., Judson, D. S., Kliman, J., Matousek, V., Motycak, S., Page, R. D., Patel, A., Petrik, K., Sedlak, M., Veselsky, M.
Rok vydání: 2016
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1016/j.nima.2016.12.048
Popis: A new technique of elucidating $\beta$-decay schemes of isotopes with large density of states at low excitation energies has been developed, in which a Broad Energy Germanium (BEGe) detector is used in conjunction with coaxial hyper-pure germanium detectors. The power of this technique has been demonstrated on the example of 183Hg decay. Mass-separated samples of 183Hg were produced by a deposition of the low-energy radioactive-ion beam delivered by the ISOLDE facility at CERN. The excellent energy resolution of the BEGe detector allowed $\gamma$ rays energies to be determined with a precision of a few tens of electronvolts, which was sufficient for the analysis of the Rydberg-Ritz combinations in the level scheme. The timestamped structure of the data was used for unambiguous separation of $\gamma$ rays arising from the decay of 183Hg from those due to the daughter decays.
Databáze: arXiv