中国物理B ›› 1997, Vol. 6 ›› Issue (10): 746-751.doi: 10.1088/1004-423X/6/10/005

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HEAVY ION TRACK DIAMETERS IN MICA STUDIED WITH SCANNING FORCE MICROSCOPE

J.ACKERMANN1, A.MLLER1, R.NEUMANN1, 王宇钢2, 赵渭江2   

  1. (1)Gesellschaft für Schwerionenforschung, (GSI) Planckstr. 1, D 64291 Darmstadt, Germany; (2)Institute of Heavy Ion Physics, Peking University, Beijing 100871, China
  • 收稿日期:1997-02-25 出版日期:1997-10-20 发布日期:1997-10-20

HEAVY ION TRACK DIAMETERS IN MICA STUDIED WITH SCANNING FORCE MICROSCOPE

WANG YU-GANG (王宇钢)a, ZHAO WEI-JIANG (赵渭江)a, J.ACKERMANNb, A.MLLERb, R.NEUMANNb   

  1. a Institute of Heavy Ion Physics, Peking University, Beijing 100871, China; b Gesellschaft für Schwerionenforschung, (GSI) Planckstr. 1, D 64291 Darmstadt, Germany
  • Received:1997-02-25 Online:1997-10-20 Published:1997-10-20

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摘要： In the present study, the scanning force microscope (SFM) was employed to measure the heavy ion track diameters in mica and was operated in the lateral-force mode with different loading forces. The mica samples were irradiated with Se, Au, Pb and Zn ions with a kinetic energy of 11.4 MeV/u at the UNILAC of GSI. The measured average track diameter increased slowly with increasing loading force between the SFM tip and sample. The experimental data pointed out that the track diameter versus loading force could be fitted by a linear function both for Se and Au ion species and the slopes of the fitted lines were nearly the same. By extrapolating to zero loading force, the intrinsic diameters of the ion tracks were obtained. A possible mechanism for the observations was discussed.

Abstract: In the present study, the scanning force microscope (SFM) was employed to measure the heavy ion track diameters in mica and was operated in the lateral-force mode with different loading forces. The mica samples were irradiated with Se, Au, Pb and Zn ions with a kinetic energy of 11.4 MeV/u at the UNILAC of GSI. The measured average track diameter increased slowly with increasing loading force between the SFM tip and sample. The experimental data pointed out that the track diameter versus loading force could be fitted by a linear function both for Se and Au ion species and the slopes of the fitted lines were nearly the same. By extrapolating to zero loading force, the intrinsic diameters of the ion tracks were obtained. A possible mechanism for the observations was discussed.

中图分类号:  (Ion radiation effects)

  • 61.80.Jh
68.37.Ps (Atomic force microscopy (AFM)) 61.82.Ms (Insulators)