New cross section data and review of production routes of medically used $^{110m}$In

TL;DR

This paper reports new experimental cross section data for the production of medically relevant $^{110m}$In isotope, reviews existing data, and proposes optimal production parameters for medical applications.

Contribution

It provides new experimental cross section measurements for $^{110m}$In production routes and critically reviews previous data to optimize production methods.

Findings

New cross section data for $^{110m}$In production routes.

Critical review of existing experimental data.

Recommended production parameters for medical use.

Abstract

Evaluation of nuclear data for production routes of $^{110m}$In is in progress in the frame of an IAEA Coordinated Research Project (CRP). New experimental cross section data for the indirect $^{nat}$In(p,x)$^{110}$Sn $\longrightarrow$ $^{110m}$In and for the direct $^{107}$Ag($\alpha$,n)$^{110m}$In and $^{109}$Ag($^{3}$He,2n)$^{110m}$In production routes and for the satellite impurity reactions $^{107}$Ag($\alpha$,xn)$^{110g,109}$In and $^{109}$Ag($^{3}$He,xn)$^{110g,111,109}$In have been measured by using the activation method, stacked foil irradiation technique and gamma-ray spectrometry. Additional data are reported for production of the $^{111}$In diagnostic gamma-emitter via the $^{109}$Ag($\alpha$,2n)$^{111}$In reaction. The earlier experimental data were critically reviewed in order to prepare recommended data and optimal production parameters for the different routes.