Abstract
Effect of Sample Preparation Route on the Thermal Diffusivity of Nd2O3 - A Laser Induced Photoacoustic Study
Highlights
The photoacoustic (PA) effect has been revived as a very useful technique for measuring the optical [1,2,3,4,5,6,7] and thermal [8,9,10] properties of materials because of its high sensitivity and non destructive nature
The thermal diffusivity of these differently Nd2O3 samples are determined by laser induced photoacoustic technique
The basic principle of photoacoustic effect is that a sample illuminated by periodically modulated light undergoes optical absorption and gets heated by nonradiative transitions
Summary
The photoacoustic (PA) effect has been revived as a very useful technique for measuring the optical [1,2,3,4,5,6,7] and thermal [8,9,10] properties of materials because of its high sensitivity and non destructive nature. Heat which is periodically deposited in the sample is transferred to the coupling medium by thermal conduction and this causes pressure oscillations in the coupling medium at the modulation frequency. These pressure variations are detected by a microphone and constitute the photoacoustic signal. In this energy conversion process (optical to acoustical) the thermal properties of the sample play a significant role. In the present paper the effect of method of preparation on thermal diffusivity of Nd2O3 has been determined by photoacoustic technique
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