Positron and Positronium Annihilation in Liquid Helium at the Lambda Point

dc.contributor.advisorRoellig, L. O. (Leonard Oscar), 1927-
dc.contributor.authorBosma, Steve
dc.descriptioniv, 33 p.en_US
dc.description.abstractThis paper is a result from an experiment that counted and analyzed positron and positronium annihilation events as close as possible above and below the lambda point 2.186 o K in liquid helium. The theory of annihilation, modes of annihilation, and positronium formation is presented as typical in much of the literature available on the subject today. A very recent theory is proposed to offer a mechanism to compensate for the discrepancy between experimental results and theoretical expectations for triplet to singlet conversion of triplet positronium in liquid helium. The mechanism is a bubble which protects the positronium atom from contact with the medium.en_US
dc.description.sponsorshipDepartment of Physics. Wayne State University. Detroit, Michigan.
dc.description.sponsorshipNational Science Foundation Undergraduate Research Program.
dc.relation.ispartofKalamazoo College Music Senior Individualized Projects Collection
dc.relation.ispartofseriesSenior Individualized Projects. Music.;
dc.rightsU.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder. All rights reserved.
dc.titlePositron and Positronium Annihilation in Liquid Helium at the Lambda Pointen_US