Study the structure of the low-lying states of ²⁰⁶Po

The nucleus 206 Po was studied in the two proton transfer reaction 204 Pb( 16 O, 14 C) 206 Po and the lifetime of the first excited 2 + state was determined by utilizing the Recoil Distance Doppler Shift method. The experimental results are compared with shell-model calculations based on different effective interactions. The calculations qualitatively reproduced the experimentally observed B ( E 2 ; 2 1 + → 0 1 + ) value, suggesting that the 2 1 + state of 206 Po exhibits a collective nature. However, the employed effective interactions revealed some limitations, particularly in their description of the 4 1 , 2 + states. These results emphasize the importance of understanding the properties of low-lying states, especially their evolution from single-particle dynamics to collective modes, in evaluating various effective nuclear interactions.