Transmuted isotopes doped in neutron-irradiated ZnO thin films were first identified on the basis of nuclear reactions of ZnO with thermal neutrons, and their existence in the ZnO thin films was then confirmed by photoluminescence (PL). ZnO thin films were irradiated by neutron beams at room temperature. The ZnO films consist of eight constituent (Zn and O) isotopes, of which four isotopes are transmutable by neutron-irradiation; 64Zn, 68Zn, 70Zn and 18O were expected to be transmuted into 65Cu, 69Ga, 71Ga and 19F, respectively. The concentrations of these transmuted isotopes were estimated in this study. The neutron-irradiated ZnO thin films were characterized by PL. In the PL spectra, the Cu-related PL peaks were observed, but the Ga- or F-associated PL peaks were absent. This observation confirms the existence of 65Cu in the ZnO and does not the formation of the other three. The reason for the absence of the Ga- or F-associated PL peaks is discussed in this paper.
|Number of pages||6|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|Publication status||Published - 2004 May|
- Capture cross section
ASJC Scopus subject areas
- Nuclear and High Energy Physics