Lifetime Measurement of the 21+ State in C20

M. Petri et al.
Phys. Rev. Lett. 107, 102501 – Published 30 August 2011

Abstract

Establishing how and when large N/Z values require modified or new theoretical tools is a major quest in nuclear physics. Here we report the first measurement of the lifetime of the 21+ state in the near-dripline nucleus C20. The deduced value of τ21+=9.8±2.8(stat)1.1+0.5(syst)ps gives a reduced transition probability of B(E2;21+0g.s.+)=7.51.7+3.0(stat)0.4+1.0(syst)e2fm4 in good agreement with a shell model calculation using isospin-dependent effective charges.

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  • Received 21 January 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.102501

© 2011 American Physical Society

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Vol. 107, Iss. 10 — 2 September 2011

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