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Gamma-ray irradiation effects to the laser-induced breakdown spectroscopy system using a ceramic and a single crystal micro-laser

Tamura, Koji; Nakanishi, Ryuzo; Oba, Hironori; Saeki, Morihisa; Taguchi, Tomitsugu*; Lim, H. H.*; Taira, Takunori*; Wakaida, Ikuo 

For the remote inspection in harsh radiation environment, laser induce breakdown spectroscopy (LIBS) system has been developed, where micro-chip laser (MCL) using a Nd:YAG/Cr:YAG composite was utilized. A ceramics composite is considered effective as a laser medium for the system because ceramics has many advantageous features (machinable, scalable, etc). In this study, for the development of the remote LIBS system, radiation effects to the optical properties of Nd:YAG ceramics and single crystal (SC) were measured and compared. Transmission spectra were measured and effects by gamma ray irradiation and temperature change were examined.

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