Pα Values (IMAGE) Science China Press Caption Pα values for the Po and Rn isotopic chains obtained from various models, including the present and previous results of the present group. A similar variation in all curves is clearly displayed. Credit ©Science China Press Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.