OPTIMIZATION OF THE HEAVY-NUCLEI TRACK ETCHING IN OLIVINE CRYSTALS FROM METEORITES

Citation
Ri. Petrova et al., OPTIMIZATION OF THE HEAVY-NUCLEI TRACK ETCHING IN OLIVINE CRYSTALS FROM METEORITES, Radiation measurements, 25(1-4), 1995, pp. 329-330
Citations number
5
Categorie Soggetti
Nuclear Sciences & Tecnology
Journal title
ISSN journal
13504487
Volume
25
Issue
1-4
Year of publication
1995
Pages
329 - 330
Database
ISI
SICI code
1350-4487(1995)25:1-4<329:OOTHTE>2.0.ZU;2-6
Abstract
The investigation of the track etching velocity dependence for nuclei with Z greater than or equal to 50 on pH of the etching solution in th e olivine crystals from Marjalahti and Eagle Station meteorites, conta ining galactic cosmic-ray nuclear tracks and also the crystals from Ma rjalahti meteorite, calibrated at the UNILAC (GSI, Darmstadt) with 14. 17 MeV/N Pb-208 nuclei, were performed. The pH of the etching solution were changed from 7.8 to 9.4. It is shown that the optimal track etch condition were realised at pH of etching solution in the interval fro m 8.4 to 8.8. The results of the Galactic cosmic-ray nuclei tracks wit h Z greater than or equal to 83 revealed in olivine crystals are prese nted. They were additionally irradiated at 90% to the surface with acc elerated 14 MeV/N Xe-132 nuclei.