Isotope analysis using the geomagnetic method
Abstract
The geomagnetic method, which is employed in the study of the isotopic composition of heavy relativistic cosmic ray nuclei, does not separate isotopes in the usual sense. It is rather based on a comparison of the shape of the transmission to that of a reference element. The present investigation is concerned with an analysis of the observed transmission, taking into account oxygen nuclei. The penumbra pattern is computed for each incoming direction. This is accomplished by computing the trajectories in a model magnetic field for a sequence of equally spaced decreasing rigidities. Questions regarding the selection criteria and the cut-off assignment are considered. It is found that a sharp cut-off selection ensures an unambiguous comparison between elements.
- Publication:
-
In: International Cosmic Ray Conference
- Pub Date:
- 1982
- Bibcode:
- 1982icr.....9..105S
- Keywords:
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- Cosmic Rays;
- Heavy Nuclei;
- Isotope Separation;
- Satellite Observation;
- Geomagnetism;
- Heao 3;
- Magnetic Rigidity;
- Neon Isotopes;
- Oxygen Isotopes;
- Relativistic Particles;
- Nuclear and High-Energy Physics