Low-energy Auger and conversion electron spectroscopy of 99Mo β--decay

B P E Tee; M P Roberts; Paul A Pellegrini; Flora Mansour; Leena Burgess; M Vos; T Kibédi

doi:10.1016/j.apradiso.2024.111405

Low-energy Auger and conversion electron spectroscopy of ⁹⁹Mo β^--decay

Appl Radiat Isot. 2024 Sep:211:111405. doi: 10.1016/j.apradiso.2024.111405. Epub 2024 Jun 15.

Authors

B P E Tee¹, M P Roberts², Paul A Pellegrini², Flora Mansour², Leena Burgess², M Vos³, T Kibédi⁴

Affiliations

¹ Department of Nuclear Physics and Accelerator Applications, Australian National University, Canberra, Australia. Electronic address: [email protected].
² Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia.
³ Department of Materials Physics, Research School of Physics, Australian National University, Canberra, Australia.
⁴ Department of Nuclear Physics and Accelerator Applications, Australian National University, Canberra, Australia.

PMID: 38917620
DOI: 10.1016/j.apradiso.2024.111405

Abstract

The preparation of nanometer-thick molybdenum-99 (⁹⁹Mo) sources using the droplet deposition method was investigated. The quality of these prepared sources was analyzed using scanning electron microscopy (SEM), electron Rutherford backscattering (ERBS) techniques, and Geant4 simulations. The emitted electrons resulting from the β^--decay of the prepared ⁹⁹Mo sources, with energies below 2.2 keV, were measured and compared with existing literature data as well as the results obtained from our in-house Monte-Carlo model, BrIccEmis.

Keywords: Auger electrons; Conversion electrons; Electron spectroscopy; Radiation.