2000 Volume 50 Issue 2 Pages 71-80
The electrical molten marks (EMMs) are often found in the fire site. Therefore, when the fire causes are investigated, EMMs can be clue for the elucidation of fire cause. The technique to discriminate between the primary molten marks which are the cause of a fire and the secondary ones which are formed by the flame of a fire, has not been confirmed yet.
We studied the crystal structure of the carbon which was caught in primary and secondary molten marks prepared artificially, and examined the difference in crystal structure between the primary and the secondary molten marks.
We found that both graphitized carbon and amorphous carbon were found in the primary molten marks. However, only amorphous carbon could be found in the secondary molten marks. This result shows that graphitized carbon can be used as an indicator of the primary molten marks.
