The frequency variation of various nuclear interactions under lead has been studied by comparing the number of different kinds of stars produced in Ilford G5 emulsion exposed directly to the air, and under 15.1cm and 10.lcm of lead. From these observations the attenuation lengths in lead are found to be: 320 +/- 12g. per cm^2 for all stars; 274 +/- 27g. per cm^2 for stars with charged primaries; 200 +/- 35g. per cm^2 for stars with uncharged primaries, excluding simple evaporation stars. The size-frequency distribution of stars and its relation to the composition of the emulsion is discussed.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.47160 |
| Date | January 1958 |
| Creators | Forbes, Vivienne Mary. |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Physics) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000474394, proquestno: AAIMK03124, Theses scanned by UMI/ProQuest. |
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