Author: Ra, S.J.
Paper Title Page
THOAB02 Metal Nano-particle Synthesis by using Proton Beam 2871
 
  • M.H. Jung, K. R. Kim, S.J. Ra
    KAERI, Daejon, Republic of Korea
 
  Funding: This work was conducted as a part of the Proton Engineering Frontier Project supported by the Ministry of Education Science & Technology of Korea Government.
Many scientists have studied metal nano-particles for newly known optical, electronic and chemical properties. The unique properties of nano-particles have a tendency to relate the particle size and shape. Electron beam have been used for the nano-particle synthesizing and many results were published. Study of nano-particles synthesize by using proton beam is still in the early stages however study for gold, silver, platinum and cobalt nano-particle was in progress. 100 MeV proton linear accelerator, which is by Proton Engineering Frontier Project, Korea Atomic Energy Research Institute, is scheduled to be completed by 2012. Study of nano-particle synthesize by using proton beam will become active due to the completion of 100 MeV proton accelerator and it can be mass-produced because of the large current beam. Finally, industrial applications could become possible. The mechanism of metal nano-particles synthesizing by proton beam irradiation was not completely known. In this study, we investigated the changes of size and shape for metal nano-particle depending on the condition of proton beam irradiation, and concentration of additives by TEM and UV/Vis spectrophotometer.
 
slides icon Slides THOAB02 [9.791 MB]  
 
THPS104 Radio-activation Effect of Target Rooms for PEFP's 20~100 MeV Linear Accelerator 3678
 
  • S.J. Ra, M.H. Jung, K. R. Kim
    KAERI, Daejon, Republic of Korea
 
  Funding: This work was conducted as a part of the Proton Engineering Frontier Project supported by the Ministry of Education Science & Technology of Korea Government.
PEFP (Proton Engineering Frontier Project) has developed a 20~100 MeV/20 mA proton linear accelerator, proton beam utilization technology and accelerator applications, in order to acquire core technologies which are essential to develop future science and secure the industrial competitiveness. In the experimental hall, 10 target rooms will be constructed for the research of radioisotopes, material, medical, neutron source, etc. In the irradiation experiments using proton beam of more than a few MeV energy, radio-activation of targets and equipments can be essentially caused by the proton induced nuclear reactions. Highly radioactive samples occasionally makesome problems or inconveniences concerning with sample handling and post-treatment because we have to wait for the samples to be cooled down under the safe value for radiation protection. So we estimated proton beam irradiation condition of each target room and used samples including equipments, then we calculated radio-activation of each target room by using Monte Carlo N-particle Transport Code.