Recent Results and Future Prospects for Nuclear Structure Studies at the ILL

• Main Authors: Simpson, G S, Genevey, J, Pinston, J A, Tsekhanovich, I, Urban, W
• Format: Conference Proceeding
• Language: English
• ISSN: 0094-243X
• DOI: 10.1063/1.2137239

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 mus 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 ((p1/2-2{expression}g9/22{expression})(g7/21{expression}h11/21{expression}) )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.