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Angular distributions of α particles emitted by oriented nuclei and their relation to nuclear deformation

  • Proceedings of the International Conference “Nucleus-2010. Methods of Nuclear Physics for Femto- and Nanotechnologies”
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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Low-temperature spin orientation of radioactive nuclei is a nuclear spectroscopic method that allows us to obtain experimental data on nuclei and extranuclear fields. We present the results from measuring the angular anisotropy of α radiation emitted by transuranium nuclei of 253,254Es, 255Fm, 241,243Am, along with that of γ radiation from 250Bk nuclei oriented in an iron matrix at temperatures of 10–300 mK. The data allow us to establish the relation between the mechanism of α decay and nuclear deformation and to compare them to the theoretical data. We also measure the energy of magnetic hyperfine splitting for the investigated nuclei, and find the magnetic hyperfine field value for Es in Fe to be |B hf | = 396(32) T. The nuclear magnetic moment for 254Es was determined, and its value was |μ(254Es)| = 4.35(41)μ N .

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Authors and Affiliations

  1. Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 119312, Russia

    G. M. Gurevich

  2. Skobel’tsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119991, Russia

    A. L. Erzinkyan & V. P. Parfenova

Authors
  1. G. M. Gurevich
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  2. A. L. Erzinkyan
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  3. V. P. Parfenova
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Corresponding author

Correspondence to G. M. Gurevich.

Additional information

Original Russian Text © G.M. Gurevich, A.L. Erzinkyan, V.P. Parfenova (the Moscow-Leuven-Bonn-Kharkov-Dimitrovgrad-Sarov-Rezhezh collaboration), 2011, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2011, Vol. 75, No. 4, pp. 556–561.

the Moscow-Leuven-Bonn-Kharkov-Dimitrovgrad-Sarov-Rezhezh collaboration

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Gurevich, G.M., Erzinkyan, A.L. & Parfenova, V.P. Angular distributions of α particles emitted by oriented nuclei and their relation to nuclear deformation. Bull. Russ. Acad. Sci. Phys. 75, 520–525 (2011). https://doi.org/10.3103/S1062873811040186

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  • DOI: https://doi.org/10.3103/S1062873811040186

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