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
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.