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Fusion Science and Technology
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General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
Seong-Heon Seo, H. K. Na, M. Kwon, N. S. Yoon
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 163-166
Topical Lectures | doi.org/10.13182/FST01-A11963432
Articles are hosted by Taylor and Francis Online.
Doppler Broadening methods have been intensively used in measuring the temperature of neutral atoms and ions in plasma diagnostics. However, since only the line-integrated emission can be measured in the experiments, the local temperature can not be found directly. To solve this problem, we first measured the spatial distribution of each spectrum by Abel inversion and then obtained the Doppler broadening at each radial position by analytically combining the spectra. The emissions are collected through five optical fibers which are located at intervals of 48 mm and inserted into the slit of a spectrometer. The dispersed output from the spectrometer is measured with a CCD camera. Since the abscissa of a CCD frame represents the spectra and the ordinate represents the spatial distribution, the Abel-inverted Doppler broadening is easily measured. By using this method, we measured the temperature distribution of neutral atoms and ions in the Hanbit device.