Studies on the Lifetimes of ⁴⁶Ti Excited States via the Doppler Shift Attenuation Method

Lifetimes of nuclear excited states are related to its internal structure, and considered as one of most important values in the nuclear property studies. In this paper, we report the first lifetime measurements of nuclear excited states at the HIRFL facility via Doppler Shift Attenuation Method(DSAM). The excited states of _^46\rmTi were populated by the _^12\rmC(_^36\rmAr, 2p) reaction, and coincidence measurements were performed by the newly upgraded HPGe detector array. Lifetimes of 4⁺, 5⁻, and 6⁻states were extracted from the gated spectra, and corresponding transition probabilities were deduced. Further theoretical calculations have been performed using the large scale configuration-mixing shell model, and configurations of those states are suggested.