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ABSTRACT: The Seoul National University AMS Laboratory has developed a sample preparation system for AMS measurement. Graphite targets are prepared via the reduction of carbon dioxide over a Fe catalyst. The carbon dioxide gases are produced by combusting pretreated organic samples with CuO and silver wire in a sealed quartz tube. Each combustion produces ca. 2 mg of graphite that is loaded into the target. So far we have been successful in extracting and analyzing 12C− current up to 10 mA in stable condition by Cs sputtering onto the targets.
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 172:454-457. · 1.21 Impact Factor
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J.S Chai,
J.H Ha,
C.S Lee,
J.C Kim,
H.T Chung,
S.J Chae,
J.Y Moon,
J.Y Huh,
Y.S Kim,
J.K Yu,
G.W Song,
S.H Bhatti,
J.H Park,
S.H Park, I.C Kim,
Y.K Kim,
J.S Hwang,
H.Y Nam,
M Cho
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ABSTRACT: Using 49.6 MeV proton beam bombarding a polypropylene target, we measured the light output response of BaF2 scintillator to protons and deuterons in the energy range between 11 and 46 MeV. Together with other data on light charged particles, we investigated the light output response for a wide range of energies, . The light output and its linearity were investigated through a normalization of our 38.9 MeV proton data. The average differential light output was extracted as a function of the stopping powers and the Birks' formula. The comparison of both turns out to be in good accord for the range of stopping powers greater than 20 MeV cm2/g, but the latter does not fit well the present data below this value.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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ABSTRACT: A new accelerator mass spectrometry (AMS) facility has been installed at the Inter-University Center for Natural Science Research Facilities (ICNSRF) of Seoul National University. In this report, an overview of the facility with its current status and prospects for the future will be presented.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms.
