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Photoacoustic Studies on Neutron-Irradiated Rare Earth Oxide Powers

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Abstract:

The effect of neutron irradiation on the photoacoustic spectra of Er2O3 and Nd2O3 in powder form has been studied. The irradiation shows a quenching effect on the photoacoustic signal which regains its intensity after a lapse of some time. It is believed that the irradiation changes the oxidation state of the rare-earth ions from M3+ to M2+. The half-life of the recovery process Er2+ to Er3+ in the case of irradiated Er2O3 is found to be 46 h.

Keywords: Defects; Neutron irradiation; Photoacoustic spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702864507738

Affiliations: 1: Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221005, India; present address: Plasma Physics Program, Physical Research Laboratory, Navrangpura, Ahmedabad-380009, India 2: Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221005, India

Publication date: November 1, 1986

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