High spin states in stable nucleus 84Sr
High spin states of 84Sr were populated through the reaction 70Zn(18O, 4n)84Sr at 75 MeV beam energy. Measurement of excitation function, γ-γ coincidences, directional correlation from oriented state (DCO) ratios and γ-transition intensities were performed using eight anticompton HPGe detectors and one planar HPGe detector. Based on the measured results, a new level scheme of 84Sr was established in which 12 new states and nearly 30 new γ-transitions were identified in the present work. The positive-parity states of the new level scheme were compared with the results from calculations in the framework of the projected shell model (PSM). One negative-parity band was extended to spin I π=19- and it can be found that in the high spin states, the γ-transition energies show the nature of signature staggering. The negative-parity band levels are in good agreement with deformed configuration-mixing shell model (DCM) calculations. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Publication Source (Journal or Book title)
Science China: Physics, Mechanics and Astronomy
Kang, X., Shen, S., Han, G., Pan, F., Gu, J., Draayer, J., Wu, X., Zhu, L., & Wen, T. (2010). High spin states in stable nucleus 84Sr. Science China: Physics, Mechanics and Astronomy, 53 (10), 1861-1867. https://doi.org/10.1007/s11433-010-4123-x