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Journal Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

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M. Autzen, N.R.J. Poolton, A.S. Murray, M. Kook, J.-P Buylaert
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 443, pp 90-99; doi:10.1016/j.nimb.2019.01.030

Abstract:The measurement of OSL/TL relies on the initial trapping and subsequent release and recombination of charge in a suitable crystal structure. These measurements allow us to estimate the dose which the crystal has been subjected to and its age. During such processes, however, electrons can be emitted from the sample surface; the ability to measure such exo-electrons can provide information regarding the trapping process, as well as an alternative method of measuring trapped charge. Ideally, TL/OSL can be measured alongside exo-electrons. We will present a new design for an exo-electron detector compatible with the classic Risø reader stimulation head featuring multiple anode configurations and the option for high-voltage modulation to reduce the UV component during TL/OSL measurements.
P. Horodek, M. Kulik
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 443, pp 84-89; doi:10.1016/j.nimb.2019.02.003

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Y.J. Zhang, N. Guo, C.C. Rong, H.L. Zhang, W. Zhang, D.Z. Gao, Q. Wang, X.J. Ma, H. Shen
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms; doi:10.1016/j.nimb.2018.10.008

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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 443; doi:10.1016/s0168-583x(19)30086-2

Joshua M. Young, Satyabrata Singh, Todd A. Byers, Daniel C. Jones, Bibhudutta Rout
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 443, pp 79-83; doi:10.1016/j.nimb.2019.01.052

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Tara Mastren, Christiaan Vermeulen, Mark Brugh, Eva R. Birnbaum, Meiring F. Nortier, Michael E. Fassbender
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 443, pp 1-4; doi:10.1016/j.nimb.2019.01.038

Abstract:The degradation of proton beam energy within a target stack was monitored via product nuclide ratios at the Los Alamos Isotope Production Facility (LANL-IPF). Nuclear reaction channels employed as energy monitors included NatNi(p,x)57Co and NatNi(p,x)57Ni. Natural nickel foils (thicknesses 0.025 mm) were used to determine proton beam energies ranging from 15 to 30 MeV. Energy values were estimated from a fitted 57Ni/57Co production activity ratio curve, which, in turn, was calculated from formation cross section data. Isotope production yields in the low energy “C” slot at LANL-IPF are very sensitive to beam energy, and differences of several MeV can translate into a drastic effect on overall production yields and radiochemical purity. Proton energies determined in this target stack position using nickel foils will serve as a basis to optimize radionuclide production in terms of product yield maximization and by-product minimization.
C.M. Abreu, M.J. Cristóbal, R. Figueroa, X.R. Nóvoa, G. Pena
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 442, pp 1-12; doi:10.1016/j.nimb.2019.01.013

Duan Zeming, Liu Jun, Jiang Qili, Pan Qiuli, Cheng Lin
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 442, pp 13-18; doi:10.1016/j.nimb.2019.01.010

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P.-L. Debarsy, G. Terwagne
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 442, pp 47-52; doi:10.1016/j.nimb.2018.12.047

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T.T. Thabethe, T. Nstoane, S. Biira, E.G. Njoroge, T.T. Hlatshwayo, V.A. Skuratov, J.B. Malherbe
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 442, pp 19-23; doi:10.1016/j.nimb.2019.01.017

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