PRESENTACIÓN A EVENTOS

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https://nuclea.cnea.gob.ar//handle/20.500.12553/1289

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Examinando PRESENTACIÓN A EVENTOS por Autor "Achterberg, E. O."

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  • Miniatura
    ÍtemAcceso Abierto
    Nuclear spectroscopy of iodine isotopes with A>134
    (European Organization for Nuclear Research (CERN), 1970) Achterberg, E. O.; De Aisenberg, E. Y.; Iglesias, F. C.; Jech, A. E.; Moragues, J. A.; Otero, D.; Pérez, M. L.; Proto-Otero, A. N.; Rossi, J. J.; Scheuer, W.; Suárez, J. F.
    During our exploration of the heavy fission peak o£ 235U in search of iodine isotopes at the Buenos Aires ISOL xx) we were able to record significant activity from mass numbers 134, 135 and 136.The available information for I34i at that time 1)2)3)4) included the observation by Erten and Coryell 1) of a 273 keV gamma ray with a half-life of 3.8 +0.5 min, and we decided to investígate the nature of this transition and of the associated isomeric state. Erten and Coryell had concluded that this isomeric level belonged to the I level scheme on the basis of their observations of the growth and decay of the activity due to low-lying transitions in 134Xe. Once our measurements had started, Erten, Coryell and Walters 5) suggested that the 273 keV ray itself belonged to I and that it was the transition which depopulated the isomeric level.
  • Miniatura
    ÍtemAcceso Abierto
    On line separation of short-lived iodine isotopes
    (Herausgeber: H. Wagner, W. Walcher. Physikalisches Instituí der Universitat Marburg, 1970) Achterberg, E. O.; De Aisenberg, E. Y.; Iglesias, F. C.; Jech, A. E.; Moragues, J. A.; Otero, O.; Pérez, K .L.; Proto-Otero, A. N.; Rossi, J. J.; Scheuer, W.; Suárez, J. F.
    The Buenos Aires ISOL set-up was designed primarily to study short lived fission products, if possible without being restricted to gases, i. e. Kr and Xe, but having also a reasonable chance to detect non-gaseous but volatile elements, such as Br and I. To this end the following design was adopted: a) a fission-product generating system coupled through a short ( 50 cm) transport line to b) an electromagnetic mass separator o£ high resolving power and efficiency, with double focussing, which delivers the mass to be studied to c) the- collecting device with its detection system, which includes a moving-tape collector and Ge(Li) and Si(Li) detectors.