Heymann, Dieter2014-11-102014-11-101980Whitehead, Brian Leigh. "Ion microprobe measurements of an allende coarse-grained inclusion." (1980) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/78044">https://hdl.handle.net/1911/78044</a>.https://hdl.handle.net/1911/78044The presence of 26Mg excesses in inclusions of the Allende meteorite result from the decay of 26A1 (T = 7.3 x 105 yrs). Two distinct 1/2 hypotheses have been presented to account for the presence of 26A1 in this meteorite; a nearby supernova which occurre52 ppapplication/pdfengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.AstronomyAstrophysicsThesisWhiteheadBThesis Sp. Sci. 1980 Whitehead