Author/Authors :
J. G. Cowpe، نويسنده , , J.S. and Moorehead، نويسنده , , R.D. and Moser، نويسنده , , D. and Astin، نويسنده , , J.S. and Karthikeyan، نويسنده , , S. and Kilcoyne، نويسنده , , S.H. and Crofts، نويسنده , , G. and Pilkington، نويسنده , , R.D.، نويسنده ,
Abstract :
Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bio-ceramic samples. The relationship between sample hardness and LIBS plasma properties was investigated, with comparison to conventional Vickers hardness measurements. The plasma excitation temperature Te was determined using the line-to-continuum ratio for the Si (I) 288.16 nm emission line; we have demonstrated a linear relationship between sample surface hardness and plasma temperature. Results indicate that hardness determination based on measurements of Te offers greater reproducibility than Vickers hardness measurements, under the conditions considered here. The validity of spectroscopic diagnostics based on LTE was confirmed.
Keywords :
Hydroxyapatite , PLASMA , Laser ablation , Glass ceramic , LIBS
