| 摘要 |
A method for controlling electrical conductivity of a work piece by emitting pulse light from a light source onto the work piece, the method comprising a step of controlling the light emission index S of the pulse light in a 400<=S<=900 range, wherein light energy, pulse width and light emission index are represented by E J/cm<2>, tau sec, and S, and the S is defined as E/tau<1/2>.
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