Author(s)
| Saifulin, Maxim (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Boutachkov, Plamen (Darmstadt, GSI) ; Gorokhova, Elena (St. Petersburg State U.) ; Rodnyi, Piotr (St. Petersburg Polytechnic Inst.) ; Simon, Pascal (CERN) ; Trautmann, Christina (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Venevtsev, Ivan (St. Petersburg Polytechnic Inst.) ; Walasek-Höhne, Beata (Darmstadt, GSI) |
Abstract
| Indium doped zinc oxide, ZnO(In), is a promising scintillation material for nanosecond-fast beam monitoring and counting heavy ions of MeV energy and above. We investigated the ionoluminescence and UV/Vis light transmission spectra that occur in ZnO(In) ceramic exposed to 4.8 MeV/u $^{48}$Ca and $^{197}$Au ions up to $5 \times 10^{12}$ and $2 \times 10^{11}$ ions/cm$^{2}$, respectively. Ionoluminescence and UV/Vis light transmission spectra were measured online as a function of fluence. Ionoluminescence is characterized by an intensive single emission band at 387 nm due to near-band-edge emission. We observed that the loss of the ionoluminescence intensity is more sensitive to the ion-beam-induced radiation damage than the loss of the optical transmission. The ionoluminescence intensity reduction as a function of ion fluence is described within the Birks–Black model. ZnO(In) exhibits higher radiation hardness and, thus, a longer lifetime than plastic scintillators used so far for fast-counting applications. |