2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 5, 49-52

Behavior of intruder based states in light Bi and Tl isotopes: the study of 187Bi $\alpha$ decay

J.C. Batchelder1,2 - K.S. Toth3 - C.R. Bingham3,4 - L.T. Brown5,6 - L.F. Conticchio5,7 - C.N. Davids5 - R.J. Irvine8 - D. Seweryniak5,7 - W.B. Walters7 - J. Wauters4 - E.F. Zganjar2 - J.L. Wood9 - C. DeCoster10 - B. Decroix10 - K. Heyde10

1 UNIRIB, Oak Ridge Associated Universities, Oak Ridge TN, 37831, USA
2 Louisiana State University, Baton Rouge, LA 70803, USA
3 Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
4 University of Tennessee, Knoxville TN 37996, USA
6 Argonne National Laboratory, Argonne, IL 60439, USA
6 Vanderbilt University, Nashville TN 37235, USA
7 University of Maryland, College Park, MD 20742, USA
8 University of Edinburgh, Edinburgh, EH9 3JZ, UK
9 Georgia Institute of Technology, Atlanta, GA 30332, USA
10 Institute for Theoretical Physics and Institute for Nuclear Physics, Gent Belgium

Received: 10 September 1998 / Revised version: 18 December 1998 Communicated by D. Schwalm

The excitation energies of the single-particle normal and intruder levels in both 183Tl and 187Bi were measured for the first time via the $\alpha$ decay of 187Bi produced in the 97Mo(92Mo,pn)187Bi reaction. The previously unobserved 187Bi ground state (h9/2) to 183Tl ground state (s1/2) $\alpha$ transition was identified, establishing the 187Bi intruder state excitation energy to be 112(21) keV, 70 keV less than that of the same level in 189Bi.

23.60.+e $\alpha$ decay

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