Repulsive potentials and nuclear stopping in ionic insulators
作者:
JP Biersack,
M Städele,
期刊:
Radiation Effects
(Taylor Available online 1982)
卷期:
Volume 64,
issue 1-4
页码: 51-60
ISSN:0033-7579
年代: 1982
DOI:10.1080/00337578208222987
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In ionic crystals or other insulators with partial ionic binding, the ion-target interaction differs from that of neutral atoms due to different electronic distributions and overall electrical charges Consequently, the nuclear stopping power and defect production by recoiling atoms will deviate from standard values, obtained from e g Moliere-potentials In the present paper, realistic potentials between projectile ion and target ion are determined by the free electron gas model of overlapping Hartree-Fock-Slater or Lenz-Jensen ions (and neutral atoms for comparison) With the new potentials, the transferred energies T and the range of interaction is determined for either damage production (T>Ed) and for nuclear stopping (T>hω> for bound ions) In addition the excitation of optical phonons is taken into account which are excited by the transient electrical field of the charged projectile
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