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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Experimental electron scattering from atomic and molecular hydrogen, helium, neon, argon and krypton /

Bohm, Robert Roman. January 1973 (has links) (PDF)
Thesis (Ph.D.) -- University of Adelaide, Dept. of Physics, 1974.
2

TXSAMC (transport cross sections from applied Monte Carlo): a new tool for generating shielded multigroup cross sections

Hiatt, Matthew Torgerson 02 June 2009 (has links)
This thesis describes a tool called TXSAMC (Transport Cross Sections from Applied Monte Carlo) that produces shielded and homogenized multigroup cross sections for small fast reactor systems. The motivation for this tool comes from a desire to investigate reactor systems that are not characterized well by existing tools. Proper investigation usually requires the use of deterministic codes to characterize the timedependent reactor behavior and to link reactor neutronics codes with thermal-hydraulics and/or other physics codes. Deterministic codes require an accurate set of multigroup cross section libraries. The current process for generating these libraries is time consuming. TXSAMC offers a shorter route for generating these libraries. TXSAMC links three external codes together to create these libraries. The code creates an MCNP (Monte Carlo N-Particle) model of the reactor and calculates the zoneaveraged scalar flux in various tally regions and a core-averaged scalar flux tallied by energy bin. The core-averaged scalar flux provides a weighting function for NJOY. The zone-averaged scalar flux data is used in TRANSX for homogenization and shielding. The code runs NJOY to produce multigroup cross sections that are tabulated by nuclide, temperature and background cross section in MATXS (Material-wise cross section) format. This library is read by TRANSX which, in conjunction with the RZFLUX (Regular Zone-averaged Flux) files, shields the cross sections and homogenizes them. The result is a macroscopic cross section for the cell within the reactor from which the RZFLUX file was written. The cross sections produced by this process have been tested in five different sample problems and have been shown to be reasonably accurate. For reactor cells containing fuel pins, the typical error in the overall fission, nusigf, (n,2n), absorption and total RRD is only a few percent and is often less than one percent. It appears that the error is less for hexagonal lattices than for square lattices. A significant amount of error is associated with threshold reactions like (n,2n) in the sodium coolant. For the square lattice test problems, a reduction in error occurs when smaller tally regions are selected. This reduction was not observed for hexagonal lattice reactors. Overall, the cross sections produced by TXSAMC performed very well.
3

Radar absorbing material design /

Yuzcelik, Cihangir Kemal. January 2003 (has links) (PDF)
Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2003. / Thesis advisor(s): David Jenn, Richard Adler. Includes bibliographical references (p. 65). Also available online.
4

Temperature effects upon nuclear cross sections thesis /

Klevans, Edward H. January 1958 (has links)
Thesis (M.S.)--University of Michigan, 1958.
5

Implementation of SIFAS on the IBM PC master's project report /

Portney, Jeffrey L. January 1983 (has links)
Thesis (M.S.)--University of Michigan, 1983.
6

Cross-section generation in core analysis code 2DBUM /

Yeh, Robert Y. C. January 1983 (has links)
Thesis (M.S.)--University of Michigan, 1983.
7

Preliminary design of an experiment for the measurement of the ⁶⁵Cu (n,2n) ⁶⁴Cu and ⁶⁴Zn (n, p) ⁶⁴Cu cross section at [symbol for approximately equal to]14 MeV

Berger, Michael Anthony. January 1986 (has links)
Thesis (M.S.)--University of Michigan, 1986.
8

Theoretical analysis of inelastic molecular collisions applications to atom-diatom systems relevant to laser operation /

Ewing, Thomas F. January 1978 (has links)
Thesis--Wisconsin. / Vita. Includes bibliographical references (leaf 64).
9

Medida absoluta da seccao de choque para a reacao sup6Li(n,alpha)sup3H na regiao de ressonancia em 244KeV

RENNER, CLEIDE 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:37:52Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:08:50Z (GMT). No. of bitstreams: 1 00036.pdf: 2085804 bytes, checksum: 64f67364f486566466da32249cd8f802 (MD5) / Tese (Doutoramento) / IEA/T / Instituto de Energia Atomica - IEA
10

Medida absoluta da seccao de choque para a reacao sup6Li(n,alpha)sup3H na regiao de ressonancia em 244KeV

RENNER, CLEIDE 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:37:52Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:08:50Z (GMT). No. of bitstreams: 1 00036.pdf: 2085804 bytes, checksum: 64f67364f486566466da32249cd8f802 (MD5) / Tese (Doutoramento) / IEA/T / Instituto de Energia Atomica - IEA

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