ELECTRONUCLEAR DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING DECEMBER 31, 1962

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Heavy-ion reactions in the low-Z region were investigated with 27-Mev nitrogen ions from the 73-inch Cyclotron and with 30-Mev oxygen ions from the Tandem Van de Graaff. Experiments included studies of angular distributions and excitation functions for transfer reactions, compound-nucleus reactions, effects of angular momentum on the density of nuclear states, and so-called Ericson fluctuations in the compound nucleus Si/sup 28/. Nuclear reactions induced with 22-Mev protons in the 86-Inch Cyclotron were used in studies of the pickup- reaction mechanism, shell-model studies from pickup reactions, scattering and the optical model, and level schemes in highly deformed nuclei. In theoretical investigations ... continued below

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Pages: 95

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Creator: Unknown. May 24, 1963.

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Heavy-ion reactions in the low-Z region were investigated with 27-Mev nitrogen ions from the 73-inch Cyclotron and with 30-Mev oxygen ions from the Tandem Van de Graaff. Experiments included studies of angular distributions and excitation functions for transfer reactions, compound-nucleus reactions, effects of angular momentum on the density of nuclear states, and so-called Ericson fluctuations in the compound nucleus Si/sup 28/. Nuclear reactions induced with 22-Mev protons in the 86-Inch Cyclotron were used in studies of the pickup- reaction mechanism, shell-model studies from pickup reactions, scattering and the optical model, and level schemes in highly deformed nuclei. In theoretical investigations of the mechanisms of nuclear reactions and related nuclear- structure information, the elastic scattering of complex particles was analyzed via the optical model; the applicability of the distorted-wave method to stripping reactions was investigated, and the inelastic scattering of carbon ions from carbon was examined. Experimental studies with the eightsector electron model, Analogue II, led to very successful deflection of the beam in November 1962, a significant advance in accelerator technology, This investigation, still incomplete, eases one of the major uncertainties associated with the proposed Mc/ sup 2/ cyclotron. The radioactivity resulting from the residual undeflected beam being dumped onto the structure of the cyclotron can now be estimated much more reliably. Successful test operation of the Oak Ridge Isochronous Cyclotron (ORIC) at full radius in March 1962 verified the design of the azimuthally varying magnetic field, which is expected to provide for fixed-frequency operation for proton energies up to 75 Mev. During these test operations at 8 Mev, the properties of the beam at full radius were explored, and the beam was brought through an electrostatic deflector channel. The machine was then shut down for the installation of the full-power r-f system and the beam-extraction components. Investigation of basic problems connected with the design of large magnets with Nb- Zr superconductors was continued. It was found that the use of a copper secondary, bifilar wound with the superconductor, and the use of epoxy casting, to rigidly confine the windings, markedly increase the current capacity of the magnet and eliminate the damage usually encountered when the superconductor goes normal. (auth)

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Pages: 95

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  • Other Information: Orig. Receipt Date: 31-DEC-63

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  • Report No.: ORNL-3432
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4706598 | External Link
  • Office of Scientific & Technical Information Report Number: 4706598
  • Archival Resource Key: ark:/67531/metadc1031798

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 24, 1963

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  • Oct. 18, 2017, 7:39 a.m.

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  • Oct. 24, 2017, 7:45 p.m.

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ELECTRONUCLEAR DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING DECEMBER 31, 1962, report, May 24, 1963; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc1031798/: accessed April 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.