Production of Carrier-free ^197m,197Hg with a Cyclotron

Mercury. Short-term storage of natural waters

“…The samples were of typically estuarine water of salinity 5%o and 7 mg/1. suspended solids Carrier-free Hg197 (Wilkniss et al, 1972) was added to two 1-liter and two 19-liter samples, stored in polyethylene containers, and one of each pair was acidified to a pH of 1 with redistilled nitric acid. Five-milliliter aliquots were withdrawn during the following eight days and counted for total, filter (0.45 µ Millipore), and filtrate portions.…”

Pion photoproduction on197Au to ground and isomeric states in197Hg

“…Details are given in the Appendix. In order to compare our chemical separation procedure with that of Reference 5, we carried out a separation using the "cold finger" method [6] at an energy of 500 MeV. With this method it is not possible to perform absolute measurements since the chemical efficiency is not known.…”

Guidelines for the preparation and isolation of Radionuclides produced with In-house Cyclotrons Bombardments

“…A carrier free isotope or CFSR has been considered the only technique that needs no quantifi able masses of stable isotopic elements of the same component present [7]. Through charged particle radioactivity, the carrier free isotopic elements are generated where their atomic numbers (Z) (or the chemical identity) are different from Z-values of the original target substance/material (TM) [8].…”