Just a quick one to paste verbatim the message from Michael Thoennessen from Michigan State University. He heads up a project which tracks discovery of isotopes, and he has spotted a new slew of first observations as follows:
Dear Isotope Friends,
Five new proton-rich and seventeen new neutron-rich nuclides were observed with the RI-Beam Factory at RIKEN, Japan. In the article "First Observation of Twenty-two Exotic Isotopes Using a 208Pb Primary Beam at RIBF" published in the journal Progress of Theoretical and Experimental Physics, Fukuda et al. reported the discovery of cerium-118, praseodymium-120, holmium-179, erbium-181 and 182, thulium-184 to 186, ytterbium-188 and 189, lutetium-191, hafnium-152, 153, 193, and 194, tantalum-154, 195, and 196, tungsten-198 and 199, and rhenium-200 and 201.
I've sketched out (roughly) where the new isotopes are on a chart of the nuclides, below, in the marked red areas. You should be able to click on the image to get a bigger version.
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