Short note
Identification of 209Hg
L. Zhang - J.H. Zhao - J.W. Zheng - J.C. Wang - Z. Qin - Y.F. Yang - C. Zhang - G.M. Jin - G.H. Guo - Y.F. Du - T.R. Guo - T.Q. Wang - B. Guo - J.F. Tain
Institute of Modern Physics, the Chinese Academy of Sciences, Lanzhou 730000, P.R. China
Received: 3 November 1997 / Revised version: 19 February 1998 Communicated by B. Povh
Abstract
The new neutron-rich nuclide 209Hg has been identified
for the first time. An on-line, gas-thermochromatographic technique was
developed for rapidly separating the Hg-element products from 600-MeV 18O+natPb(thick target) reaction system. A special detection arrangement
was used in order to detect the weak 
-activities of the
neutron-rich Hg isotopes. The half-life of 209Hg was determined to be 35-6+9 s.
PACS
25.70.Hi Transfer reactions -
27.80.+w 
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