NEW ELEMENT, LAWRENCIUM, ATOMIC NUMBER 103

An element with atomic number 103 STAsuggested name Lawrencium (Lw)! is produced by bombardment of highly purified Cf (isotope nos. 249, 250, 251, and 252) with either B/sup 1//sup 0/ or B/sup 1//sup 1/. Alpha particle emission energies of 8.6 Mev and an 8 plus or minus 2-sec half life are attributed to the new element; it is thought that the mass number is 257. (T.F.H.)