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Leising, Mark D.

Works: 4 works in 6 publications in 1 language and 11 library holdings
Classifications: QC1 P5655 V. 144, NO. 1,
Publication Timeline
Publications about Mark D Leising
Publications by Mark D Leising
Most widely held works by Mark D Leising
26Al in the interstellar medium by Donald D Clayton( Book )
3 editions published in 1987 in English and held by 8 libraries worldwide
26Al in the interstellar region by Donald D Clayton( Article )
1 edition published in 1987 in English and held by 1 library worldwide
Diffuse gamma ray lines and galactic structure by Mark D Leising( Book )
1 edition published in 1985 in English and held by 1 library worldwide
Al26 in the Interstellar Medium ( Book )
1 edition published in 1987 in English and held by 1 library worldwide
Several different lines of physical reasoning have converged on the importance of the radioactive nucleus Al 26. The sciences of meteoritics, nucleosynthesis, gamma-ray astronomy, galactic chemical evolution, solar system formation, and interstellar chemistry all place this nucleus in a central position with possible profound implications. Perhaps more importantly the study of this radioactivity can unite these diverse fields in a complicated framework which will benefit all of them. This review traces the evolution of ideas concerning Al 26 in the context of these disciplines. Al 26 was first discussed for the possibility that its decay energy could melt meteorite parent bodies, and its daughter, Mg 26, was later found in meteorites with enhanced abundance. It was also among the first radioactivities expected to be synthesized in interestingly large quantities in nucleosynthetic events. The first definitive detection of gamma-rays from an interstellar radioactivity is that of 1.809 MeV gamma-rays from Al 26. This discovery has many implications, some of which are outlined here. The whole problem of isotopic anomalies in meteorites is greatly influenced by the specific issues surrounding excess Mg 26, whether it represents in situ decay of Al 26 or memory of conditions of the ISM. The relationships among these ideas and their implications are examined. Reprints. (JHD)
English (6)
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