Lifetime measurement of the first excited 2+ state in 16C

Phys Rev Lett. 2008 Apr 18;100(15):152501. doi: 10.1103/PhysRevLett.100.152501. Epub 2008 Apr 16.

Abstract

The lifetime of the 2_+(1) state in 16C has been measured with the recoil distance method using the 9Be(9Be,2p) fusion-evaporation reaction at a beam energy of 40 MeV. The mean lifetime was measured to be 11.7(20) ps corresponding to a B(E2;2_+(1)-->0+) value of 4.15(73)e_2 fm_4 [1.73(30) W.u.], consistent with other even-even closed shell nuclei. Our result does not support an interpretation for "decoupled" valence neutrons.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.