出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The branching ratio between the b − and b +/e decay of 74As has been measured in Ta, Al, Ge
and mylar. The decay in Ge and Ta samples has also been studied at different temperatures in
the range of 250mK to 300K. No significant dependence either on the temperature or on the host
materials has been found. Our work demonstrates the inadequacy of the Debye –Hückel model
in explaining similar experiments, confirming the recent results of the field.
