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Research Initiatives |
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SMP 2003 TERP 2004 TERP 2003 TERP 2002 TERP 2001 SMP 2004 SMP 2003 SMP 2002 ACJC 2003 ACJC 2002 ASS 2004 |
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The project undertaken by Mr Low Xi Zhen and Mr Goh Yan Ming Jonathan, both from Anglo Chinese School (Independent), involves designing, construction and use of Faraday cup for the estimation of Neon ion energies and flux in plasma focus device. This SMP/GEP project was started in late January and was continued till August 2003. It was unfortunate that Mr Jonathan could not stay till the end of the project as his family shifted to US, but he contributed his part before he left. The title of their project was "Ion Emission studies in Plasma Focus Device" During the course of this project Xi Zhen and Jonathan showed great enthusiasm in learning new concept, designing ability and analytical skills. The project momentum was broken due to SARS problem in Singapore but still the boys did their job wonderfully and completed the project in time. Their eagerness to learn more and appreciation for the complicated physics concepts was remarkable. The project won the Distinction award in Physics and Mathematics Category (top 3 Projects were awarded with that, rest were given merit award) at Ninth Youth Science Conference of Singapore at Singapore Poly in Aug, 2003. The abstract of their paper is given below Ion Emission studies in Plasma Focus Device Low Xi Zhen 1, Goh Yan Ming Jonathan1, R. S. Rawat2 1Anglo Chinese School (Independent) 121 Dover Road, Singapore 139650 2Natural Sciences, National Institute of Education, 1 Nanyang Walk, Singapore 637616 Abstract This paper reports the first ever measurement of neon ion emission characteristics from a dense plasma focus device using a simple and inexpensive diagnostic tool called Faraday cup. The other papers so far have reported the estimation of deuterium and nitrogen ion fluxes from plasma focus device using Faraday cup. A deep copper collector in a separate differentially pumped chamber, evacuated to 10-3 mbar, using a turbo-molecular pump is used for this purpose. A windowless photodiode, covered with suitable filter, has been used to identify the photon generated part of the Faraday cup signal for correct estimation of the ion flux. The neon ions have been found to have energies in the range of 35 keV to over 1.5 MeV. The estimated ion flux for the ions in the estimated energy range is about 9.6´1012 ions/sterad.
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Ó Rajdeep Singh Rawat, Natural Sciences and Science Education, National Institute of Education Updated on 3 Aug 2004 Contact │ rsrawat@nie.edu.sg |
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