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Nadeem Shaukat,류민,심형진 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.5
With ever-advancing computer technology, the Monte Carlo (MC) neutron transport calculation isexpanding its application area to nuclear reactor transient analysis. Dynamic MC (DMC) neutron trackingfor transient analysis requires efficient algorithms for delayed neutron generation, neutron populationcontrol, and initial condition modeling. In this paper, a new MC steady-state simulation method based ontime-dependent MC neutron tracking is proposed for steady-state initial condition modeling; during thisprocess, prompt neutron sources and delayed neutron precursors for the DMC transient simulation caneasily be sampled. The DMC method, including the proposed time-dependent DMC steady-state simulationmethod, has been implemented in McCARD and applied for two-dimensional core kineticsproblems in the time-dependent neutron transport benchmark C5G7-TD. The McCARD DMC calculationresults show good agreement with results of a deterministic transport analysis code, nTRACER.
A Study on Dosimetric Characterization of Direct Yellow 12 Dye at High Radiation γ-Dose
Javaria Batool,Shaukat Ali Shahid,Ramiza,Nasim Akhtar,Afshan Naz,Maria Yaseen,Inam Ullah,Muhammad Nadeem,Imran Shakir 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.7
Aqueous solution of oxygenated Direct yellow 12 dye has been evaluated spectrophotometrically as a possible gamma rays dosimeter. The neutral (pH-7), alkaline (pH-12.5) and acidic (pH-5.5) aqueous solution of the dye were prepared and exposed to various gamma doses. Absorption spectra of unirradiated and irradiated solutions were recorded at 400 nm peak. The increase in absorbance with the increase in irradiation dose was observed from 1 to 6 kGy. The stability response of the dye solution for different environmental conditions such as temperature (low & high), light and darkness were investigated during post irradiation storage for ten days. The dye solution showed high stability in darkness for the studied period. The optical density of the dye solution was found to be decreased at high temperature storage.
A Study on Dosimetric Characterization of Direct Yellow 12 Dye at High Radiation γ-Dose
Batool, Javaria,Shahid, Shaukat Ali,Ramiza, Ramiza,Akhtar, Nasim,Naz, Afshan,Yaseen, Maria,Ullah, Inam,Nadeem, Muhammad,Shakir, Imran Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.7
Aqueous solution of oxygenated Direct yellow 12 dye has been evaluated spectrophotometrically as a possible gamma rays dosimeter. The neutral (pH-7), alkaline (pH-12.5) and acidic (pH-5.5) aqueous solution of the dye were prepared and exposed to various gamma doses. Absorption spectra of unirradiated and irradiated solutions were recorded at 400 nm peak. The increase in absorbance with the increase in irradiation dose was observed from 1 to 6 kGy. The stability response of the dye solution for different environmental conditions such as temperature (low & high), light and darkness were investigated during post irradiation storage for ten days. The dye solution showed high stability in darkness for the studied period. The optical density of the dye solution was found to be decreased at high temperature storage.