Ionic charge dependence of the internal conversion coefficient and nuclear lifetime of the first excited state in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>125</mn></mrow></msup></mrow></math></span>Te

F. Attallah; M. Aiche; J. F. Chemin; J. N. Scheurer; W. E. Meyerhof; J. R. Grandin; P. Aguer; G. Bogaert; C. Grunberg; J. Kiener; A. Lefebvre; J. P. Thibaud

doi:10.1103/PhysRevC.55.1665

Ionic charge dependence of the internal conversion coefficient and nuclear lifetime of the first excited state in $^{125}$ Te

F. Attallah, M. Aiche, J. F. Chemin, J. N. Scheurer, W. E. Meyerhof, J. R. Grandin, P. Aguer, G. Bogaert, C. Grunberg, J. Kiener, A. Lefebvre, and J. P. Thibaud

Phys. Rev. C 55, 1665 – Published 1 April 1997

Abstract

We have studied the ionic charge state dependence of the nuclear lifetime of the 35.5-keV first excited state of $^{125}$ Te. We found for the 47 $^{+}$ and 48 $^{+}$ ions, 400 and 670 % variations with respect to the neutral-atom half-life (1.49 ns). These unusually large effects are due to the energetic blocking of the $K$ -shell internal conversion as the charge state increases past $47^{+}$ . For the $46^{+}$ , we suggest a new internal conversion mode without any electron emission into the energy continuum.

Received 21 October 1996

DOI:https://doi.org/10.1103/PhysRevC.55.1665

Authors & Affiliations

F. Attallah¹, M. Aiche¹, J. F. Chemin¹, J. N. Scheurer¹, W. E. Meyerhof², J. R. Grandin³, P. Aguer⁴, G. Bogaert⁴, C. Grunberg⁵, J. Kiener⁴, A. Lefebvre⁴, and J. P. Thibaud⁴

¹Centre d’Etudes Nucléaires de Bordeaux-Gradignan, IN2P3-CNRS, Université de Bordeaux, Boı̂te Postale 117, F-33175 Gradignan, France
²Department of Physics, Stanford University, Stanford, California 94305
³Centre Interdisciplinaire de Recherche avec les Ions Lourds, CEA-CNRS, Boı̂te Postale 5133, F-14040 Caen, France
⁴Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3-CNRS, Université d’Orsay, F-91405 Orsay, France
⁵Grand Accélérateur National d’Iond Lourds, Boı̂te Postale 5027, F-14021 Caen, France

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Vol. 55, Iss. 4 — April 1997

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