93 resultados para Nuclear physics


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Summary of a conference held Sept. 23-25, 1946 at Princeton University.

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"Issued : June 1972"

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Mode of access: Internet.

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sup. 1. January to July 1950 -- sup. 2. July 1950 to January 1951 -- sup. 3. January to July 1951.

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Includes bibliographical references.

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Includes bibliography.

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Item 474-A-1

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The measurement of 28O-Mev neutron cross sections of various nuclei is described. The neutron beam used results from 340-Mev protons in the 184-in. cyclotron striking a 2-in. Be target. The neutron detector consists of a double coincidence anthracene scintillation counter telescope which counts recoil protons scattered at 15 deg from a paraffin cylinder placed in the collimated neutron beam. A 2-in. Cu absorber placed between the counters assures that only protons of energy greater than 250 Mev are counted. The cross sections for all nuclei measured from Li to Pb are smaller than the corresponding cross sections measured at 90 Mev by factors between 0.5 and 0.6.

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Includes bibliographical references.

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Unclassified Physics Distribution.