Friction change induced by single MeV ion impact measured by scanning probe microscope
- National Inst. for Advanced Interdisciplinary Research, Tsukuba, Ibaraki (Japan). Joint Research Center for Atom Technology
- Mechanical Engineering Lab., Tsukuba, Ibaraki (Japan)
In order to evaluate the damage caused by a single MeV ion impact, the authors prepared highly oriented pyrolytic graphite specimens, each implanted with 3.1 MeV Au, Ag, Cu and Si ions at a dose of 2.3 {times} 10{sup 11} cm{sup {minus}2} (2,300 {micro}m{sup {minus}2}). They then observed specimens by using friction force microscope, and found round regions caused by single-ion impacts on the implanted surface. The frictional force between the surface and the silicon-nitride tip increased in disordered regions. The number density of the regions differed at individual ion-implanted surface, 372 {micro}m{sup {minus}2} at the Cu-implanted surface, and 44 {micro}m{sup {minus}2} at the Si-implanted surface. They calculated the electronic stopping power and the probability of knock-on atom generation by the nuclear collision to determine which process affected the density. They found that the difference in the number density was closely related to that of nuclear collisions.
- Sponsoring Organization:
- New Energy and Industrial Technology Development Organization, Tokyo (Japan)
- OSTI ID:
- 477434
- Report Number(s):
- CONF-951155-; ISBN 1-55899-299-5; TRN: 97:009432
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 27 Nov - 1 Dec 1995; Other Information: PBD: 1996; Related Information: Is Part Of Ion-solid interactions for materials modification and processing; Poker, D.B. [ed.] [Oak Ridge National Lab., TN (United States)]; Ila, D. [ed.] [Alabama A and M Univ., Normal, AL (United States)]; Cheng, Y.T. [ed.] [General Motors Corp., Warren, MI (United States)]; Harriott, L.R. [ed.] [AT and T Bell Labs., Murray Hill, NJ (United States)]; Sigmon, T.W. [ed.] [Arizona State Univ., Tempe, AZ (United States)]; PB: 923 p.; Materials Research Society symposium proceedings, Volume 396
- Country of Publication:
- United States
- Language:
- English
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