Orateur
Description
J.M.Daugas1,2,3, F.Boulay2,3,4, G.S.Simpson5, Y.Ichikawa2, A.Takamine2, D.S.Ahn2, K.Asahi2,6, H.Baba2, D.L.Balabanski2,7, T.Egami8, T.Fujita2,9, N.Fukuda2, C.Funayama5, T.Furukawa10, G.Georgiev11, A.Gladkov2,12, M.Hass13, K.Imamura2,14, N.Inabe2, Y.Ishibashi2,15, T.Kawaguchi8, T.Kawamura9, W.Kim12, Y.Kobayashi16, S.Kojima6, A.Kusoglu7,17, R.Lozeva11, S.Momiyama18, I.Mukul13, M.Niikura18, H.Nishibata9, T.Nishizaka8, A.Odahara9, Y.Ohtomo2,6, D.Ralet11, T.Sato6, Y.Shimizu2, T.Shimoda9, T.Sumikama2, H.Suzuki2, H.Takeda2, L.C.Tao2,19, Y.Togano6, D.Tominaga8, H.Ueno2, H.Yamazaki2, X.F.Yang20
1) ILL, Grenoble, France; 2) RIKEN Nishina Center, Wako, Japan; 3) CEA, DAM, DIF, Arpajon, France; 4) GANIL, Caen, France; 5) LPSC, Grenoble, France; 6) Tokyo Institute of Technology, Japan; 7) ELI-NP, Magurele, Romania; 8) Hosei University, Japan; 9) Osaka University, Japan; 10) Tokyo Metropolitan University, Japan; 11) IJCLab, Orsay, France; 12) Kyungpook National University, Daegu, Korea; 13) Weizmann Institute, Rehovot, Israel; 14) Meiji University, Tokyo, Japan; 15) University of Tsukuba, Japan; 16) University of Electro Communications, Tokyo, Japan; 17) Istanbul University, Turkey; 18) University of Tokyo, Japan; 19) Peking University, China; 20) KU Leuven, Belgium
The measurement of the nuclear moments of isomeric states using the well-known TDPAD method requests a spin-aligned ensemble of nuclei. Spin-aligned isomeric nuclear states are produced in several types of nuclear reactions. Particularly, the amount of spin-alignment of fragments produced in spontaneous and neutron-induced fission was found to be up to 40%.
In order to produce neutron-rich isotopes the fragmentation reaction and the fission are of particular interest. Further, the abrasion-fission reaction allows the production of very exotic species. During the g-RISING campaign g-factors of 126,127Sn microsecond isomeric states produced in abrasion-fission reaction have been measured with an observed 18(8) % spin-alignment.
A measurement performed at the RIBF, RIKEN Nishina Center, using the abrasion-fission reaction, allows to observe the relationship between the momentum distribution of the produced isotopes and the amount of spin-alignment. The obtained results show the opportunity to perform nuclear moment measurements of neutron-rich microsecond isomers produced by the abrasion-fission reaction with respect to the momentum position of the fission fragment.
