Question:
Specimen heating The fraction of the energy in the incident
Last updated: 3/25/2024
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Specimen heating The fraction of the energy in the incident electron beam which reappears in the form of X rays light etc is small most being converted into heat in the target The temperature rise AT is expressed as AT 4 8Egl kd Eo is the incident electron energy keV the current A k the thermal conductivity Wcm K1 and d the beam diameter m Metals k 1 4 AT is negligible Mica k 6x103 Eo 20 keV 10 nA d 1 m T 160K