Lifetimes in some even nuclei in the s-d shell

Abstract

Mean lifetimes have been measured by the Doppler shift attenuation method for several nuclei in the s-d shell. Both Ge(Li) and NaI(Tl) detectors were used. The results (in ps) for the energy levels indicated in parenthesis (MeV) were: ²⁴Mg(1.37)2.07+or-0.34, (4.23) 0.110+or-0.026; ³⁰Si(2.23)0.332+or-0.021, (3.51) 0.063+or-0.0015; ³⁴S (2.13) 0.467+or-0.090, (3.30) 0.144+or- 0.028; ³⁸Ar (2.17) 0.473_-0.110^+0.145, (3.38) 25 _-12^{+ infinity} , ⁴⁰Ar(1.46) 2.45 _-1.30⁺¹⁸.