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A new, highly automated method of elemental analysis for oxygen is described. The method represents an improvement over previous techniques

Basis of the Analysis of the Paragenesis of Minerals" (Translation, Consultants Bureau, New York), 1959. (6) Roozeboom, H. W., Z. physik. Chem. 15, 147(1894). (7) Stokes, C. G., Proc. Roy. Soc. (London) 49A, 171 (1891).

The discovery of a new activity of bromine is reported and is assigned to a 2(-) isomeric state of Br 82 . The new activity is chemically identified as bromine and shown to be the short-lived parent of Br 82 . It decays primarily by a highly converted M3 transition (a = 382=fc:75) of 46 keV to the 5(-) ground state of Br 82 . Two weak branches in the proposed decay scheme lead by beta emission to the 0.78-MeV level (0.15%) and the 1.48-MeV level (0.024%) of Kr 82 . Time-dependent gamma spectra, obtained with a large anticoincidence counter, demonstrate the growth of the 2.65-MeV sum peak of Br 82 after thermal-neutron activation of NEUBr. Short-lived gamma peaks at 46 keV, 0.78 MeV, and 1.48 MeV were observed in the gamma spectra of an activated sample of enriched NKUBr (99.32% Br 81 ). X-ray spectra of activated NEUBr taken with an argon-methane proportional counter provide evidence that the short-lived component is a thermal-neutron activation product. One-component decay curves of the Br K x rays over more than 6 halfperiods define the half-life of Br 82w as 363 ±2 sec.