ATOMIC-FORCE-MICROSCOPIC OBSERVATIONS OF DISSOLUTION OF MICA AT SITES PENETRATED BY KEV/NUCLEON IONS

被引：23

作者：

SNOWDENIFFT, D ^{[1
]}

PRICE, PB ^{[1
]}

NAGAHARA, LA ^{[1
]}

FUJISHIMA, A ^{[1
]}

机构：

[1] UNIV TOKYO,FAC ENGN,DEPT SYNTHET CHEM,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.70.2348

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

With atomic-force microscopy we studied etch pits in muscovite mica that was irradiated with 200-keV Ag ions and with recoiling daughter atoms emitted in alpha decay. Etching occurs by initiation of 1-nm-high steps at the point of intersection of an ion's trajectory with the basal plane and by their subsequent spreading. Along some crystallographic directions in the basal plane, steps are observed to be paired, with a height of 2 nm; in other directions they remain separate. Possible future applications include alpha-recoil geochronology and searches for hypothetical dark-matter particles.

引用

页码：2348 / 2351

页数：4

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