# Recent results and future prospects for nuclear structure studies at the ILL

Abstract : The Lohengrin fission-product spectrometer at the ILL offers some unique opportunities to study the structure of very rare neutron-rich nuclei near 132Sn, in the mass A~100 region and in the A~160 region using microsecond isomeric gamma rays. Techniques to measure isomeric gamma rays, conversion electrons, excited-state lifetimes in the pico-to-nanosecond domain and g factors will be presented. New results on an isomeric state in 98Zr will also be discussed. A 2.5 µs isomeric 17– state at 6.5 MeV has recently been measured with the Lohengrin spectrometer in 98Zr. This spherical isomeric state is believed to have a $(\pi(p_{1/2}^{-2}g_{9/2}^{2})\nu(g_{7/2}^{1}h_{11/2}^1))17–$ configuration and decays into two collective bands. One of the collective bands has a vibrational character, which becomes rotational at higher spins. An idea to build a neutron guide for nuclear structure experiments on very neutron-rich nuclei at the ILL is currently being discussed. A brief outline of a recent neutron-guide experiment will be presented.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00025199
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Submitted on : Friday, December 9, 2005 - 9:51:10 AM
Last modification on : Monday, July 20, 2020 - 9:18:26 AM

### Citation

G.S. Simpson, J. Genevey, J.A. Pinston, I. Tsekhanovich, W. Urban. Recent results and future prospects for nuclear structure studies at the ILL. 3rd International Workshop on Nuclear Fission and Fission-Product Spectroscopy, May 2005, Chateau de Cadarache, Saint Paul Lez Durance, France. pp.137-144, ⟨10.1063/1.2137239⟩. ⟨in2p3-00025199⟩

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