Structure of heavy ion tracks in Ag-Cl detectors
| Autor: | E. Schopper, B. Baican, H.-G. Baumgardt |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Atmospheric Science
Solid-state physics Aerospace Engineering Image processing Optical density Particle detector Effective nuclear charge Monocrystalline silicon Lattice (order) Radiation Ionizing Image Processing Computer-Assisted Linear Energy Transfer Radiometry Nuclear Physics Physics Ions Microscopy Detector Radiobiology Silver Compounds Astronomy and Astrophysics Nuclear Energy Geophysics Space and Planetary Science General Earth and Planetary Sciences Atomic physics Crystallization Elementary Particles |
| Zdroj: | Advances in space research : the official journal of the Committee on Space Research (COSPAR). 12(2-3) |
| ISSN: | 0273-1177 |
| Popis: | The microdosimetric lateral structure of tracks of charged nuclear particles in monocrystalline layers of AgCl-detectors has been measured by means of a videoelectronic computer-controlled image analysing system. The lateral optical density profiles, recorded along the track in sequential steps of 0.2 micrometer show compact tracks with a density maximum around the track axis as well as "coreless" tracks with a density minimum towards the axis. This minimum is more pronounced for particles of high effective charge mean q exceeding approximately 25. The effect of fading of the core depends on the charge state mean q of the particle rather than on its (high) LET. This finding points towards an increased atomic displacement by Coulomb-repulsion into the lattice of the detector of Ag(+)-atoms which are needed for the formation of the track. Examples of measurements and of tracks are presented. |
| Databáze: | OpenAIRE |
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