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arXiv · 1907.04431

Measurement of $^{139}$La(p,x) Cross Sections from 35-60 MeV by Stacked-Target Activation

Jonathan T. Morrell·Andrew S. Voyles·M. S. Basunia·Jon C. Batchelder·Eric F. Matthews·Lee A. Bernstein
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Abstract

A stacked-target of natural lanthanum foils (99.9119% $^{139}$La) was irradiated using a 60 MeV proton beam at the LBNL 88-Inch Cyclotron. $^{139}$La(p,x) cross sections are reported between 35-60 MeV for nine radionuclides. The primary motivation for this measurement was the need to quantify the production of $^{134}$Ce. As a positron-emitting analogue of the promising medical radionuclide $^{225}$Ac, $^{134}$Ce is desirable for in vivo applications of bio-distribution assays for this emerging radio-pharmaceutical. The results of this measurement were compared to the nuclear model codes TALYS, EMPIRE and ALICE (using default parameters), which showed significant deviation from the measured values.

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Jonathan T. Morrell, Andrew S. Voyles, M. S. Basunia, Jon C. Batchelder, Eric F. Matthews, Lee A. Bernstein. 2019-07-09. Measurement of $^{139}$La(p,x) Cross Sections from 35-60 MeV by Stacked-Target Activation. https://doi.org/10.1140/epja/s10050-019-00010-0

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