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[en] Recently, the 155Sm decay was studied in the Nuclear Structure Laboratory (LEN-IPEN/SP) by single spectroscopy measurements and two new transitions were proposed. In order to confirm and possibly enhance these results, in this work gamma-gamma coincidence spectroscopy measurements were performed using a multi parametric data acquisition system. These measurements were performed using 4 high-resolution HPGe detectors with active volumes ranging from 50 to 190 cm3. The multi parametric data acquisition system used, installed in the Linear Accelerator Laboratory of the Physics Institute (LAL/IFUSP). The six bidimensional spectra produced were relocated and summed up, so that two 'all-in-one' bidimensional spectra, one for the total coincidences and the other for accidental coincidences, were then used in the analysis. From these results, ten new transitions were added to this decay scheme, and a level at 1310 keV could also be proposed. (author)
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Associacao Brasileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil); [vp.]; ISBN 978-85-99141-02-1; 
; 2007; [6 p.]; INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; Santos (Brazil); 30 Sep - 5 Oct 2007; 8. Brazilian national meeting on nuclear applications; Santos (Brazil); 30 Sep - 5 Oct 2007; Available from the Library of the Brazilian National Nuclear Energy Commission, Rio de Janeiro, in electronic form; 5 refs., 2 figs., 2 tabs. Code: E121290.pdf
; 2007; [6 p.]; INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; Santos (Brazil); 30 Sep - 5 Oct 2007; 8. Brazilian national meeting on nuclear applications; Santos (Brazil); 30 Sep - 5 Oct 2007; Available from the Library of the Brazilian National Nuclear Energy Commission, Rio de Janeiro, in electronic form; 5 refs., 2 figs., 2 tabs. Code: E121290.pdf