%A WANG He, N. Aoi, S. Takeuchi, M. Matsushita, P. Doornenbal, T. Motobayashi, D. Steppenbeck, K. Yoneda, K. Kobayashi, J. Lee, LIU Hong-Na, Y. Kondo, R. Yokoyama, H. Sakurai, YE Yan-Lin %T Observation of New Isotope 131Ag via the Two-Step Fragmentation Technique %0 Journal Article %D 2013 %J Chin. Phys. Lett. %R 10.1088/0256-307X/30/4/042501 %P 042501%V 30 %N 4 %U {https://cpl.iphy.ac.cn/CN/abstract/article_53567.shtml} %8 2013-03-29 %X We report on the first observation of the neutron-rich nucleus 131Ag. This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams, including 134, 135Sn. The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon. Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity, time of flight, energy loss, and total kinetic energy.