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Full-Text Articles in Physical Sciences and Mathematics

Self-Calibrating Position-Sensitive Silicon Detectors, J. T. Walton, H. A. Sommer, Gordon J. Wozniak, Graham F. Peaslee, D. R. Bowman, W. L. Kehoe, A. Moroni Oct 1990

Self-Calibrating Position-Sensitive Silicon Detectors, J. T. Walton, H. A. Sommer, Gordon J. Wozniak, Graham F. Peaslee, D. R. Bowman, W. L. Kehoe, A. Moroni

Faculty Publications

Position-sensitive silicon detectors with discrete position output signal levels, which have been developed for heavy ion reaction studies at the Lawrence Berkeley Laboratory are discussed. The detectors, both 300- and 5000-μm thick, for use in ΔE-E telescopes, use a series of high and low conductivity strips on the detector p+ contact to produce a position signal with 15 discrete levels. Since the position of the signals from the strips is known, the detectors are self-calibrating against position nonlinearities. Some aspects of the fabrication of both the 300- and 5000-μm detectors are discussed, along with their operating characteristics. Illustrative experimental results …


Production And Deexcitation Of Hot Nuclei In Collisions Of 27 Mev/Nucleon 40ar + 238u, D. Jacquet, Graham F. Peaslee, John M. Alexander, B. Borderie, E. Duek, J. Galin, D. Gardes, C. Grégorie, D. Guerreau, H. Fuchs, M. Lefort, M. F. Rivet, X. Tarrago Apr 1990

Production And Deexcitation Of Hot Nuclei In Collisions Of 27 Mev/Nucleon 40ar + 238u, D. Jacquet, Graham F. Peaslee, John M. Alexander, B. Borderie, E. Duek, J. Galin, D. Gardes, C. Grégorie, D. Guerreau, H. Fuchs, M. Lefort, M. F. Rivet, X. Tarrago

Faculty Publications

Hot nuclei, produced in the reaction 1080 MeV 40Ar+238U, have been studied by means of the light charged particles emitted in coincidence with fission fragments. A dominant fraction of the light charged particles emitted in the backward hemisphere (60%, 75%, 80% and 85% for 1,2,3H and 4He, respectively) comes from evaporation from a composite nucleus prior to scission. Careful analysis of the cross sections and energy spectra of these evaporated particles yields several properties of the hot nuclear emitters: (i) they are thermalized with an average temperature of 4.0–4.6 MeV, (ii) they are quite deformed (mean axis ratio ) and …


Final Report : [Land Settlement Review], Della E. Mcmillan, Thomas M. Painter, Thayer Scudder, Institute For Development Anthropology (Binghamton, N.Y.) Jan 1990

Final Report : [Land Settlement Review], Della E. Mcmillan, Thomas M. Painter, Thayer Scudder, Institute For Development Anthropology (Binghamton, N.Y.)

Institute for Development Anthropology Papers

No abstract provided.


1990 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group Jan 1990

1990 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group

Images

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1990.


1990 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie Jan 1990

1990 File Geodatabase Containing Photo Point Locations, Aerial Photos, And Flight Maps, City Of Tampa Department Of Sanitary Sewers Bay Study Group, Pete Reehling, Richard Mckenzie

Data Sets

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the photo point locations, aerial photos, and flight maps for the year 1990.