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High-sensitivity Radioactive Xenon Monitoring and High-accuracy Neutron-proton Scattering Measurements
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research.
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Two aspects of applied nuclear physics have been studied in this thesis; Monte Carlo simulations for high-sensitivity monitoring of radioactive xenon and high-accuracy neutron-proton scattering measurements for neutron physics applications and fundamental physics.

The Monte Carlo simulations have been performed for two systems for detection of radioactive xenon, using the MCNP code. These systems, designed for monitoring of violations of the Comprehensive Nuclear-Test-Ban Treaty, are based on coincident detection of electrons and gamma rays, emitted in beta decay of xenon nuclides produced in nuclear weapons explosions. In general, the simulations describe test data well, and the deviations from experimental data are understood.

The neutron-proton scattering measurements have been performed by measuring the differential np scattering cross section at 96 MeV in the angular range θc.m.= 20° – 76°. Together with an earlier data set at the same energy, covering the angles θc.m.= 74° – 180°, a new data set has been formed in the angular range θc.m.= 20° – 180°. This extended data set has been normalised to the experimental total np cross section, resulting in a renormalisation of the earlier data of 0.7 %, which is well within the stated normalisation uncertainty for that experiment. The results on forward np scattering are in reasonable agreement with theory models and partial wave analyses and have been compared with data from the literature.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis , 2004. , p. 59
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 984
Keyword [en]
Nuclear physics, Monte Carlo simulations, MCNP, xenon detection, detector response, neutron detection, elastic scattering, differential cross section
Keyword [sv]
Kärnfysik
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-4279ISBN: 91-554-5979-X (print)OAI: oai:DiVA.org:uu-4279DiVA, id: diva2:164677
Public defence
2004-06-04, Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15
Opponent
Supervisors
Available from: 2004-05-11 Created: 2004-05-11 Last updated: 2012-04-11Bibliographically approved
List of papers
1. SAUNA: a system for automatic sampling, processing, and analysis of radioactive xenon
Open this publication in new window or tab >>SAUNA: a system for automatic sampling, processing, and analysis of radioactive xenon
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2003 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 508, p. 542-Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-91819 (URN)
Available from: 2004-05-11 Created: 2004-05-11 Last updated: 2017-12-14Bibliographically approved
2. Gain calibration of a β/γ coincidence spectrometer for automated radioxenon analysis
Open this publication in new window or tab >>Gain calibration of a β/γ coincidence spectrometer for automated radioxenon analysis
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2004 (English)In: Nuclear Instruments and Methods in Physics Research Section A, Vol. 521, p. 586-Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-91820 (URN)
Available from: 2004-05-11 Created: 2004-05-11 Last updated: 2012-04-11Bibliographically approved
3. SCANDAL - A facility for elastic neutron scattering studies in the 50--130 MeV range
Open this publication in new window or tab >>SCANDAL - A facility for elastic neutron scattering studies in the 50--130 MeV range
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2002 (English)In: Nucl. Instr. Meth., Vol. A, no 489, p. 282-Article in journal (Refereed) Published
Identifiers
urn:nbn:se:uu:diva-45213 (URN)
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2013-02-18
4. Forward-angle neutron-proton scattering at 96 MeV
Open this publication in new window or tab >>Forward-angle neutron-proton scattering at 96 MeV
Manuscript (Other academic)
Identifiers
urn:nbn:se:uu:diva-91822 (URN)
Available from: 2004-05-11 Created: 2004-05-11 Last updated: 2010-01-13Bibliographically approved

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Citation style
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