# 2019 Symposium on Nuclear Data 2019年度核データ研究会

28-30 November 2019
C-CUBE, Kyushu University Chikushi Campus 九州大学筑紫キャンパス総合研究棟 (C-Cube)
Asia/Tokyo timezone
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# Production cross sections of $^{45}$Ti via deuteron-induced reaction on $^{45}$Sc

## Primary authors

• Mr. Zolbadral TSOODOL (1 Graduate School of Biomedical Science and Engineering, Hokkaido University, Sapporo 060-8638, Japan)

## Abstract

The nuclide $^{45}$Ti has a half-life of 184.8 min and is a positron emitter (E$_β^+$= 439 keV, I$_β^+$= 84.8%)suitable for positron emission tomography (PET). The deuteron-induced reaction on a scandium-45 target is a possible route to produce this radionuclide at cyclotrons. In this study, the cross sections of the $^{45}$Sc(d,2n)$^{45}$Ti reaction were measured using stacked foil activation method and γ-ray spectrometry up to 24 MeV.

The experiment was performed at the AVF cyclotron of the RIKEN RI Beam Factory. The stacked target consisted of pure metallic foils of $^{45}$Sc (7.71 and 76.0 mg/cm$^{2}$ thickness, 99.0% purity), $^{27}$Al (4.99 mg/cm$^{2}$, 99.6%) and $^{nat}$Ti (9.13 mg/cm$^{2}$, 99.6%). The stack was irradiated for 30 min by a 24-MeV deuteron beam of an average intensity of 180.3 nA. The incident beam energy was measured by time-of-flight method. The energy degradation in the stacked foils was calculated by the SRIM code$^1$.

The excitation function of the $^{45}$Sc(d,2n)$^{45}$Ti reaction is shown in Fig. 1 in comparison with the previous data$^2$ and the theoretical estimation of TENDL-2017$^3$. The derived excitation function of the $^{45}$Sc(d,2n)$^{45}$Ti reaction is almost consistent with the data reported by Hermanne et al.$^2$. The TENDL-2017 data show that the peak position is slightly shifted to the lower energy compared to the two experimental data sets. The experiment was carried out at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo, Japan. This work is supported by JSPS KAKENHI Grant Number 17K07004. Ts.Z was granted a scholarship by the Mongolian-Japan Engineering Education Development Program, M-JEED project J11B16.

References:

1. Ziegler JF, Ziegler MD, Biersack JP. SRIM - The stopping and range of ions in matter (2010). Nucl. Instruments Methods Phys. Res. Sect. B Beam Interact. with Mater. Atoms. 2010;268:1818–1823.
2. Hermanne A, Adam Rebeles R, Tarkanyi F, et al. Cross sections of deuteron induced reactions on 45Sc up to 50 MeV: Experiments and comparison with theoretical codes. Nucl. Instruments Methods Phys. Res. Sect. B Beam Interact. with Mater. Atoms [Internet]. 2012;270:106–115. Available from: http://dx.doi.org/10.1016/j.nimb.2011.09.002.
3. Koning AJ, Rochman D, Sublet JC, et al. TENDL: Complete Nuclear Data Library for Innovative Nuclear Science and Technology. Nucl. Data Sheets. 2019;155:1–55.