Eur. Phys. J. A (2005) 25: 465-466
https://doi.org/10.1140/epjad/i2005-06-176-y

ENAM 2004

Investigations of short half-life states from SF of ²⁵²Cf

¹ Physics Department, Vanderbilt University, 37235, Nashville, TN, USA
² Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA
³ Department of Physics, Tsinghua University, 100084, Beijing, PRC
⁴ Lawrence Livermore National Laboratory, 94550, Livermore, CA, USA
⁵ Idaho National Engineering and Environmental Laboratory, 83415, Idaho Falls, ID, USA
⁶ Flerov Laboratory for Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia
⁷ Universidade Federal do Rio de Janeiro, CP 68528, RG Brazil

^* e-mail: d.fong@vanderbilt.edu

Received: 26 October 2004
Accepted: 6 May 2005
Published online: 21 July 2005

Abstract

By using different time-gated triple γ coincidence data, the half-lives (T _1/2) of several short lived states in neutron-rich nuclei have been studied. The first excited states in the ground state bands often decay by delayed γ emission. By creating triple γ coincidence spectra with time windows of 8, 16, 20, 28, and 48 ns, we have studied states with half-lives below 10 ns. The estimated half-lives of ¹⁰²Zr, ¹³⁷Xe, and ¹⁴³Ba are in reasonable agreement with previously reported values. We extract the first estimates of the half lives of the 2⁺ states in ¹⁰⁴Zr and ¹⁵²Ce.