Beam-based scenario for Am242m isomer depletion via nuclear excitation by electron capture

J. Rzadkiewicz, M. Polasik, K. Słabkowska, Ł. Syrocki, E. Wȩder, J. J. Carroll, and C. J. Chiara
Phys. Rev. C 99, 044309 – Published 18 April 2019

Abstract

Following the first experimental observation of Mo93m isomer depletion via nuclear excitation by electron capture (NEEC), we consider another experimental scenario related to the Am242m isomer for which the probability of the NEEC process is expected to be even higher than for the Mo93m isomer. The optimum experimental conditions for the production and depletion of the Am242m isomer in a beam-based scenario are discussed. The relevant beam-target reaction cross sections have been calculated striving to ensure effective production of the Am242m isomer. Kinetic energies required for the NEEC process to occur have been predicted for the n=5, 6, and 7 subshells of Am242m ions and combined with available ion charge states at subsequent stages of the ion stopping process. The NEEC resonance strengths have been estimated for the partial contributions of individual subshells to the whole NEEC process.

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  • Received 1 March 2019

DOI:https://doi.org/10.1103/PhysRevC.99.044309

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsAtomic, Molecular & Optical

Authors & Affiliations

J. Rzadkiewicz

  • National Centre for Nuclear Research, 05-400 Otwock, Poland

M. Polasik*, K. Słabkowska, Ł. Syrocki, and E. Wȩder

  • Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

J. J. Carroll

  • U.S. Army Research Laboratory, Adelphi, Maryland 20783, USA

C. J. Chiara

  • Oak Ridge Associated Universities, U.S. Army Research Laboratory, Adelphi, Maryland 20783, USA

  • *Corresponding author: mpolasik@uni.torun.pl

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Issue

Vol. 99, Iss. 4 — April 2019

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