Publication
Physical Review Letters
Paper

Laser ablation of YBa2Cu3O7- as probed by laser-induced fluorescence spectroscopy

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Abstract

Ground-state populations of cationic and neutral Y, Ba, Cu, and neutral YO, BaO, and CuO are monitored by laser-induced fluorescence during laser ablation of YBa2Cu3O7-. 193-nm photons completely dissociate CuO allowing the observation of a subsequent reaction of the Cu atom with O2 to form CuO. As a function of O2 pressure, the CuO signal increases to a maximum at approximately 120 mTorr of O2, presumably minimizing , and then falls to negligible levels by 400 mTorr. Ablation at 248 and 351 nm dissociates a smaller fraction of the CuO, i.e., nascent CuO is observed in the absence of O2. © 1991 The American Physical Society.

Date

01 Jan 1991

Publication

Physical Review Letters

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