Production of no-carrier-added radiobromine: new nickel selenide target and optimized separation by dry distillation
-
Katharina Breunig
,
Stefan Spellerberg
Abstract
Nickel(II) selenide (NiSe) was investigated as a new high-current target material for cyclotron production of radiobromine, as it contains a higher amount of selenium and has a lower melting point than the widely used Cu2Se. Using a slanted target system, NiSe was successfully tested up to beam currents of 16 μA so far. With regard to the isolation of no-carrier-added (n.c.a.) radiobromide from the target material, an improved dry distillation device with high yields of 76% – 86% was developed. The implementation of a special custom-made quartz funnel decreased the dead volume of the apparatus and a quartz capillary for trapping the radiobromine allowed to concentrate the radioactivity in a small volume of less than 100 μL of 0.1 M NaOH, ready for immediate subsequent radiosyntheses. Thus, the new apparatus improves the handling of the isolation procedure and the radioactive product. The radiochemical purity of the resulting solution of n.c.a. [*Br]bromide was verified by radio-IC where no other species were detected.
Acknowledgement
The authors would like to thank Prof. Dr. Dr. h.c. mult. S. M. Qaim for very helpful discussions and his constant constructive advice. Sincere thanks also go to the staff of the glass blowing workshop for manufacturing and helpful expert advice and as well to the operator-team of the BC1710 cyclotron, both of the Forschungszentrum Jülich.
©2015 Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Integral cross section measurements of a few threshold reactions induced by Am/Be neutrons
- Effect of irradiation on some actinide and fission product ions' extraction using several tetraalkyl diglycolamides
- Extraction studies of actinides and lanthanides by bifunctional H-phosphonates
- Demonstration of trivalent actinide partitioning from simulated high-level liquid waste using modifier-free unsymmetrical diglycolamide in n-dodecane
- Preparation, characterization and thermodynamic properties of Zr-containing Cl-bearing layered double hydroxides (LDHs)
- Box-Behnken design in modeling of solid-phase tea waste extraction for the removal of uranium from water samples
- Sequestering of thorium ions from aqueous media on rice husk: Equilibrium, kinetic and thermodynamic studies
- Rapid Communication
- Production of no-carrier-added radiobromine: new nickel selenide target and optimized separation by dry distillation
Artikel in diesem Heft
- Frontmatter
- Integral cross section measurements of a few threshold reactions induced by Am/Be neutrons
- Effect of irradiation on some actinide and fission product ions' extraction using several tetraalkyl diglycolamides
- Extraction studies of actinides and lanthanides by bifunctional H-phosphonates
- Demonstration of trivalent actinide partitioning from simulated high-level liquid waste using modifier-free unsymmetrical diglycolamide in n-dodecane
- Preparation, characterization and thermodynamic properties of Zr-containing Cl-bearing layered double hydroxides (LDHs)
- Box-Behnken design in modeling of solid-phase tea waste extraction for the removal of uranium from water samples
- Sequestering of thorium ions from aqueous media on rice husk: Equilibrium, kinetic and thermodynamic studies
- Rapid Communication
- Production of no-carrier-added radiobromine: new nickel selenide target and optimized separation by dry distillation
