A 14.5 GHz ECRIS has been designed and fabricated at KAERI (Korea Atomic Energy Research Institute) to produce multi-charged ion beam (especially for C ion beam) for medical application. The magnet system has cupper conductor solenoid coils and a permanent magnet hexapole. A welded tube with aluminium and stainless steel is used for an ECR plasma chamber to improve the production of secondary e...

To analyze mutation in tomato genomic DNA by RAPD technology, certain factors influencing RAPD amplification, such as, DNA template, Taq DNA polymerase, Mg, dNTPs and primer, were studied to optimize RAPD amplification reaction system. RAPD amplification of tomato genomic DNA after low energy ion implantation along with soybean DNA was successfully performed. Compared to the control, genomic DN...

A neutron radiography facility utilizing a 28 GHz superconducting electron cyclotron resonance (ECR) ion source and a heavy ion accelerator is now under construction at Korea Basic Science Institute (KSBI). In order to generate a proper energy distribution of neutron, a lithium ion beam is considered. It will be accelerated up to the energy of 2.7 MeV/u by using a radio frequency quadrupole (RF...

The ion-hose instability is a transverse electrostatic instability which occurs on electron beams in the presence of a low-density ion channel. In the DARHT-2 accelerator, the 2 kA, 2 microsecond beam pulse produces an ion channel through impact ionization of the residual background gas ( 1:5 10 7 torr average). A calculation of the linear growth by R. J. Briggs indicated that the instability c...

Background: In radiation therapy with ion beams, lateral distributions of absorbed dose in the tissue are important. Heavy ion therapy, such as carbon-ion therapy, is a novel technique of high-precision external radiotherapy which has advantages over proton therapy in terms of dose locality and biological effectiveness.Methods: In this study, we used Monte Carlo method-based Geant4 toolkit to s...

With the rapid advances being made in novel high-energy ion-beam techniques such as proton beam writing, single-ion-event effects, ion-beam-radiation therapy, ion-induced fluorescence imaging, proton/ion microscopy, and ion-induced electron imaging, it is becoming increasingly important to understand the spatial energydeposition profiles of energetic ions as they penetrate matter. In this work ...