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Nanosecond Time Resolved Reflectivity Measurements At The Surface of Pulsed Laser Irradiated Graphite

Published online by Cambridge University Press:  26 February 2011

T. Venkatesan ,
J. Steinbeck ,
G. Braunstein ,
M. S. Dresselhaus ,
G. Dresselhaus ,
D. C. Jacobson  and
B. S. Elman
T. Venkatesan
Affiliation:
Bell Communications Research, Murray Hill, New Jersey 07974
J. Steinbeck
Affiliation:
MIT, Cambridge, MA 02139
G. Braunstein
Affiliation:
MIT, Cambridge, MA 02139
M. S. Dresselhaus
Affiliation:
MIT, Cambridge, MA 02139
G. Dresselhaus
Affiliation:
MIT, Cambridge, MA 02139
D. C. Jacobson
Affiliation:
AT&T Bell Laboratories, Murray Hill, New Jersey 07974
B. S. Elman
Affiliation:
GTE Laboratories, Waltham, MA 02254
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Abstract

Time resolved reflectivity measurements at the surface of pulsed laser irradiated graphite are found to be complicated by the evolution of carbon atoms from the surface which attenuates the probe beam. The evolution of the species occurs concomitant with the observation of the melt on a time scale of <2 nsec. Further, the emitted species have velocities of:≤ 2 x 105 cm/s. The experimental results suggest the formation of large clusters at the molten surface though more experiments are required to clearly distinguish the effect of clusters from those due to the formation of a randomly reflecting plasma.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 51: Symposium A – Beam-Solid Interactions and Phase Transformations , 1985 , 251
Copyright
Copyright © Materials Research Society 1985

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References

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