Office of Scientific & Technical Information Technical Reports - 5 Matching Results

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''Cutie Pie,'' A portable radiation instrument

Description: A portable beta and gamma radiation meter of exceedingly small dimensions and weight has been developed. User acceptance has been more enthusiastic than any previous instrument of its type. The circuit, using one Victoreen V-32 tube, is the simplest electronic circuit possible for radiation work and gives high sensitivity. Stability exceeds anything of comparable sensitivity which has come to our attention. The short term stability is due to a circuit which prevents emission before the cathode … more
Date: September 19, 1947
Creator: Ballou, C. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Graphite expansion committee meeting of January 7, 1947

Description: The fourteenth meeting of the Graphite Expansion Committee was held on February 7, 1947. Laboratory studies indicate that either the graphite thermocouples are reading low or that annealing effects at elevated temperatures within the pile are much greater than those encountered In the laboratory. Current difficulties with operation of some of the horizontal and vertical control rods seem to be attributable to graphite expansion, though no complete understanding of the phenomena has been obtaine… more
Date: February 19, 1947
Creator: Woods, W. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Poison patterns for counteracting rod failures

Description: This report contains the calculation of the number and spacing of poison columns required to hold a 105 pile in the following cases: (1) complete failure of horizontal rods, (2) complete failure of all rods. Using 10% Cd 90% Pb poison columns of 1.44 inch diameter, it is found that 17 poison columns are required to hold the pile in case of complete failure of horizontal rods, and 65 poison columns are required to hold the pile in case of complete failure of all rods.
Date: June 19, 1947
Creator: Larrick, C. V. & Fullmer, C. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Temperature moments vs poison moments

Description: The excess reactivity available in an operating pile is absorbed in poison columns and horizontal rods. The temperature distribution of the pile is determined by the relative strengths and locations of the poison columns and the configuration of control rods used. A method for adjusting poison columns and rods to improve upon the pile`s temperature distribution is given in Document {number_sign}7-2654, ``Procedure for Improving Temperature Distribution via Rods and Columns,`` Wheeler and Menegu… more
Date: May 19, 1947
Creator: Staebler, U. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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