Production of 7Be, 22Na, 24Na and 10Be from Al in a 4π-irradiated meteorite model

P. Englert, S. Theis, R. Michel, C. Tuniz, R. K. Moniot, S. Vajda, T. H. Kruse, D. K. Pal, Gregory Herzog

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Abstract

A model of a small meteorite, 10 cm in diameter, made of granodiorite was rotated in a beam of 600 MeV protons to simulate 4π-irradiation conditions in space. Analysis of Al foils placed at known locations within the model give depth profiles of high energy (7Be, 10Be) and low energy (24Na, 22Na) spallation products. These isotopes were measured by means of high-resolution gamma-ray or accelerator mass spectroscopy (AMS). While the production rate profiles of the high energy products are flat within the limits of uncertainty, the profiles of the low energy products increase from the surface to the center by a factor of approximately 1.2. This increase indicates the importance of secondary neutrons and protons for the production of low energy spallation products, even within small meteorites.

Original languageEnglish (US)
Pages (from-to)415-419
Number of pages5
JournalNuclear Inst. and Methods in Physics Research, B
Volume5
Issue number2
DOIs
StatePublished - Jan 1 1984

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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