EPJ Web Conf.
Volume 123, 2016Heavy Ion Accelerator Symposium 2015: International Nuclear Structure Conference in Remembrance of George Dracoulis
|Number of page(s)||5|
|Section||New Facilities and Techniques|
|Published online||05 September 2016|
Decay spectroscopy with Solenogam at the ANU Heavy Ion Accelerator Facility
Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia
a e-mail: firstname.lastname@example.org
Published online: 5 September 2016
Solenogam is a recoil spectrometer designed and constructed for use at the Australian National University (ANU) Heavy-Ion Accelerator Facility (HIAF). The design enables the study of nuclear excitations populated by the decay of long-lived states such as isomers and radioactive ground states. Solenogam is comprised of high-sensitivity γ-ray and electron detector arrays coupled to a new 8-T solenoid. While the installation of the 8-T solenoid proceeds, off-line measurements have been made to characterise Solenogam’s performance. Gamma-electron coincidences in the electron capture decay of 182Re into 182W were used to investigate conversion coeffcients and γ-e– angular correlations. The measured conversion coeffcients show good agreement with theoretical calculations and have been used to extract E0/E2 mixing ratios for a number of J → J transitions. The angular correlations measured by the array are in qualitative agreement with theoretical calculations. However, the magnitudes of the correlations are attenuated by approximately 40% for reasons unknown at present. These results are the first full use of the Solenogam system for γ-e– coincidence measurements and have proven that the system is capable of highly-sensitive internal conversion analysis of complex decays.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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