R. Hensler

The lifetime of the 3.74 MeV (3−) state of 40Ca

Abstract The mean life of the 3.74 MeV (3 − ) excited state of 40 Ca has been directly measured by a particle-gamma delayed coincidence technique. A mean life τ = 59 ± 5 ps was obtained, corresponding to a transition strength B (E3) = 31 ± 3 W.u.

The 4.61 and 5.15 MeV levels of 48Ca

Abstract Particle-γ angular-correlation and lifetime studies of the fourth and fifth excited states of 48 Ca give E x = 4.613 MeV, J π = 3 (+) , τ m = 1.8±0.6 ps and E x = 5.152 MeV, J π = (5 − ) τ m = 2.21±0.04 ns respectively. The properties of the first five excited states of 48 Ca are discussed with reference to recent shell-model calculations; no compelling evidence of collective structure is indicated.

The lattice location of fluorine in iron and nickel

Abstract The lattice location of implanted fluorine in iron and nickel crystals has been studied using the ion-beam particle channeling technique and proton-induced nuclear reactions in an attempt to determine lattice sites corresponding to measured magnetic hyperfine fields at fluorine in these ferromagnets.