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dc.contributor.advisorLeach, Kyle
dc.contributor.authorSteward, Brian
dc.date.accessioned2017-02-22T17:13:43Z
dc.date.accessioned2022-02-03T12:59:09Z
dc.date.available2017-02-22T17:13:43Z
dc.date.available2022-02-03T12:59:09Z
dc.date.issued2017
dc.identifierT 8221
dc.identifier.urihttps://hdl.handle.net/11124/170678
dc.descriptionIncludes bibliographical references.
dc.description2017 Spring.
dc.description.abstractWe have investigated the use of a 1.3 mCi 244Cm source as a reproduction of a lost α particle flux from high temperature fusion plasma. The purpose of the experiment was to allow the testing of thin-foil Faraday collectors as a lost α particle diagnostic. Many sets of measurements were made: the first with a single thick Al sheet and subsequently with a thin (2.5 µm) Ni foil backed by a thick Al sheet under varying conditions. The measurements were made with a commercial Keithley picoammeter and with a custom built high precision current integrator. Measurements were made at pressures between 1 mTorr and atmosphere. At higher pressures, above 1 Torr, the measured current was greatly exceeded by the predicted current. At lower pressures, less than 0.1 Torr, the measured current was observed to be in rough agreement with the expected current. A new technique to measure pressure in the regime of 1 to 50 Torr with an accuracy of about 1% at the lower pressures is explored.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2017 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.titleMeasurements of the alpha particle induced current in metal foils
dc.typeText
dc.contributor.committeememberOhno, Timothy R.
dc.contributor.committeememberCecil, F. Edward
thesis.degree.nameMaster of Science (M.S.)
thesis.degree.levelMasters
thesis.degree.disciplinePhysics
thesis.degree.grantorColorado School of Mines


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