用卡西尼号航天器寻找指数radioactive decay定律的修正
Searching for modifications to the exponential radioactive decay law with the Cassini spacecraft
摘要：
卡西尼号航天器上的放射性同位素热电发电机的功率输出的数据被用来测试的猜想，在地面测量的指数放射性衰变规律的小偏差与地球-太阳的距离相关。在0.7 - 1.6 A.U.范围内未观察到与指数衰减的显著偏差。在Pu-238的衰变率与1/R^2成正比的项上，90%Cl的上限设定为0.84 x 10^-4，在与1/R成正比的项上，90%Cl的上限设定为0.99 x 10^-4。
英文摘要：
Data from the power output of the radioisotope thermoelectric generators aboard the Cassini spacecraft are used to test the conjecture that small deviations observed in terrestrial measurements of the exponential radioactive decay law are correlated with the Earth-Sun distance. No significant deviations from exponential decay are observed over a range of 0.7 - 1.6 A.U. A 90% Cl upper limit of 0.84 x 10^-4 is set on a term in the decay rate of Pu-238 proportional to 1/R^2 and 0.99 x 10^-4 for a term proportional to 1/R.
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