1 research outputs found
Radiochemical Determination of Long-Lived Radionuclides in Proton-Irradiated Heavy-Metal Targets: Part ITantalum
In
this study, distillation, precipitation, and ion-exchange methods
were chosen for the separation of the long-lived β-emitters <sup>129</sup>I, <sup>36</sup>Cl and the α-emitters <sup>154</sup>Dy, <sup>148</sup>Gd, <sup>150</sup>Gd, and <sup>146</sup>Sm from
Ta targets irradiated with protons up to 2.6 GeV to determine their
production cross sections. Measurements of <sup>129</sup>I/<sup>127</sup>I and <sup>36</sup>Cl/<sup>35</sup>Cl ratios were performed with
accelerator mass spectrometry. After separation of the lanthanides,
the molecular plating technique was applied to prepare thin samples
to obtain highly resolved α-spectra. Autoradiography and focused
ion beam/scanning electron microscopy techniques were used to characterize
the lanthanide deposited layer. Experimental cross-section data are
compared with theoretical predictions obtained with INCL++ and ABLA07
code, and a satisfactory agreement is observed