تقرير
Searches for solar-influenced radioactive decay anomalies using Spacecraft RTGs
| العنوان: | Searches for solar-influenced radioactive decay anomalies using Spacecraft RTGs |
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| المؤلفون: | Krause, D. E., Rogers, B. A., Fischbach, E., Buncher, J. B, Ging, A., Jenkins, J. H., Longuski, J. M., Strange, N., Sturrock, P. A. |
| المصدر: | Astroparticle Physics 36 (2012) 51-56 |
| سنة النشر: | 2012 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology Nuclear Experiment Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics, High Energy Physics - Phenomenology, Nuclear Experiment, Physics - Space Physics |
| الوصف: | Experiments showing a seasonal variation of the nuclear decay rates of a number of different nuclei, and decay anomalies apparently related to solar flares and solar rotation, have suggested that the Sun may somehow be influencing nuclear decay processes. Recently, Cooper searched for such an effect in $^{238}$Pu nuclei contained in the radioisotope thermoelectric generators (RTGs) on board the Cassini spacecraft. In this paper we modify and extend Cooper's analysis to obtain constraints on anomalous decays of $^{238}$Pu over a wider range of models, but these limits cannot be applied to other nuclei if the anomaly is composition-dependent. We also show that it may require very high sensitivity for terrestrial experiments to discriminate among some models if such a decay anomaly exists, motivating the consideration of future spacecraft experiments which would require less precision. Comment: 8 pages, 4 figures (to appear in Astroparticle Physics) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.astropartphys.2012.05.002 |
| URL الوصول: | http://arxiv.org/abs/1205.7015 |
| رقم الأكسشن: | edsarx.1205.7015 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.astropartphys.2012.05.002 |
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