Excitation functions for the elastic scattering of protons by 22 Ne have been measured at 90°, 105°, 120°, 135°, 150°, and 160° from 0.8 to 3.13 MeV, and for the reaction 22 Ne(^') 22 Ne* (first excited state), at 90°, 120°, and 150° from 2.0 to 3.13 MeV, with an average energy resolution of about 250 eV. Spins, parities, and partial and total widths have been extracted for the large majority of the 76 resonances observed. Two isobaric analog states, those of the sixth and seventh excited states of 23 Ne, have been identified. Both analogs are evidenced as fragmentations of the broad T > states into enhancement of the background T< states. A sum rule applied to the individual fine-structure widths implies spectroscopic factors in agreement with those extracted from (d,p) stripping measurements on 22 Ne.

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The metabolism of rare earths and of other significant components of fission products by microorganisms during growth is largely undescribed. A few important specialized studies are available. Both stable lanthanum (Richards and Troutman, 1940) and cerium (Miller, 1959) are known to accumulate in yeast cells, and yeast ' This work was performed at the Medical Division, Oak Rtidge Institute of Nuclear Studies, Oak Ridge, Tennessee, tunder contract with the U. S. Atomic Energy Commission. We therefore compared the uptake of cerium and of mixed fission products by selected bacteria, yeasts, and molds under pure culture conditions. Cerium was used to represent the rare earths that occur among fission products and that have many similar chemical and biological properties. The convenient properties of radioactive cerium-144 also influenced the choice of this element to exemplify the rare earths. This radioisotope is readily available, is long-lived (T1/2, 283 days), and is in equilibrium with its short-lived daughter, praseodymium-144 (T1/2, 17.5 min). Since the