Migration processes in thermally fragile samples have been investigated using non-contact photopyroelectric (NCPPE) detection configurations. The evolutions of the NCPPE signal during migration phenomena were evidenced. Depth penetration of migrating agents were estimated in the range of few microns to several hundred microns using a one-dimensional (1D) modelling of heat transfer.

Topics
Phase transitions, Surface collisions, Thermodynamic states and processes
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© 1999 American Institute of Physics.
1999
American Institute of Physics
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