Decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Sm</mml:mi></mml:mrow><mml:mrow /><mml:mrow><mml:mn>155</mml:mn></mml:mrow><mml:mrow /><mml:mrow /><mml:mprescripts /><mml:mrow><mml:mn>62</mml:mn></mml:mrow><mml:mrow /><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>(23.5 min)

Schmid, L.C.; Burson, S.B.

doi:10.1103/physrev.115.447

Cited by 21 publications

(3 citation statements)

References 12 publications

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“…--Le schéma de niveaux de l55Eu, reproduit figure 1a, est maintenant assez bien établi [1], [2] et l'on peut considérer comme connus les spins et parités des principaux niveaux excités. D'après la mesure de leurs coefficients de conversion [1], les photons de 105 et 141 keV sont de nature El, pratiquement sans mélange M2., Cette détermination est en accord avec la mesure de la corrélation angulaire de la cascade 105-141 keV [2]. Les nombres quantiques asymptotiques (N, m,A) de Nilsson [3], pour les noyaux déformés, sont indiqués entre parenthèses sur la figure 1.…”

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Périodes des niveaux excités de 15563Eu

Vergnes¹,

Jastrzȩbski²

1961

J. Phys. Radium

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Expérimentalement on a, en utilisant un coefficient : oek = 0,27 [1] pour la transition de 105 keV : L'importance relative de la transition de 141 keV dans la désexcitation du niveau à. 246 keV est assez mal connue : 1141/Itotale = 0,176 [1] ou 0,286 [2].…”

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Périodes des niveaux excités de 15563Eu

Vergnes¹,

Jastrzȩbski²

1961

J. Phys. Radium

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“…It can be seen that the present value and the revised value of Subba Rao are in good agreement with the theoretical values for pure El transitions. 1 "iR D. Relative Intensities of the 104-, 142-and 246-keV Gamma Rays in Eu The relative intensities of the 104-, 142-and 245-keV gamma rays from 155 the decay of 22 minute Sm have been reported with values differing by 45 percent and with errors of 10 percent or more(68)(69)(70)(71)(72)(73). The present in vestigation was undertaken to determine accurately the relative intensity of these gamma rays so they may be used to obtain the internal conversion coef ficients for these transitions.155 Analysis of the Eu gamma-ray spectrum 155 155 The level structure in the nucleus Eu following the decay of Sm is shown inFigure 33(32, p. 5-5-51, 1963).…”

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Measurements of some gamma-ray relative intensities and internal conversion coefficients using a bent-crystal monochromator

Nelson

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The X-ray and gamma-ray relative intensities were measured, from the decay of and Sm^^^ with a bent-crystal monochromator and a linear least-squares computer program. The K-shell internal conversion coefficients were determined for the E2 transitions in and Er. The K-shell conversion coefficient, for the 84.3-keV transition in Yb^^^ was determined to be 1.43±0.04 while the K-shell internal conver sion coefficient for the 80.6-keV transition in Er was determined to be 4* + 1.72±0.06. The results for these 2-K) transitions are five percent higher than the theoretical values for these transitions. From the relative inten-180 sities of the transitions in Hf it was possible to deduce a value for the 93 total internal conversion coefficient for the 93.3-keV transition of cy = 4.91±0.23. Using the previous measurements of conversion electron intensi ties of Edwards and Boehm and the present measured gamma-ray relative inten sities, internal conversion coefficients for all the other transitions were obtained. The present measurements of for the 215.3-, 332.5-and 443.8-keV E2 transitions are 11 percent lower than the theoretical values, while for the 93.3-keV E2 transition agrees closely with the theoretical value. These results are in close agreement with the previous measurements of Edwards and Boehm. The present valjie_for_a|^ for the 501-keV transition agrees closely with the theoretical for an E3 multipolarity. From the 1 CC X-ray and gamma-ray relative intensities of the transitions in Gd and the previous measurement of the ratio of K conversion electrons for the 86and 105-keV transitions of Subba Rao, it was possible to determine the K V conversion coefficients for the 86-and 105-keV transitions of «j, = 0.43 ±0.06 and = 0.23±0.03. These results are in agreement with the theo retical values for pure El transitions. The relative intensities of the 246-, 142-and 104-keV gamma rays following the decay of 22 minute were determined with improved precision in order that they might be used to determine accurately the conversion coefficients for these transitions.

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