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The g-factor measurement as an ultimate test for nuclear chirality

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Abstract

We present results of a series of experiments aimed at finding the most direct fingerprints of a phenomenon of nuclear chirality. These experiments brought a detailed knowledge of the so called partner bands in 132La, 128Cs and 126Cs including absolute values of E2 and Ml transition probabilities obtained through the DSA (Doppler Shift Attenuation) method. Considering the indirect character of observables such as energies and transition rates we proposed measurement of the g-factor of a chosen state as a direct, ultimate test of chirality. Our experiment on the bandhead of partner bands in 128Cs showed feasibility of this approach. Measured value of the g-factor which suggests non-chiral character of this state leads to another puzzle in the chirality studies — how the chirality emerges with increasing spin of levels along a partner band.

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Acknowledgements

We want to express our deep gratitude to our late colleagues, Alexandr A. Pasternak and Tomasz Morek, for a longstanding collaboration and a significant contribution to our studies of nuclear chirality. In particular, to Alexandr A. Pasternak for playing a leading role in DSAM analysis and creating excellent software and to Tomasz Morek for a very important role in all stages of experiments and data analysis.

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Authors and Affiliations

  1. National Centre for Nuclear Research, 05-540, Świerk, Poland

    Ernest Grodner

  2. Heavy Ion Laboratory, University of Warsaw, Pasteura 5a, 02-093, Warsaw, Poland

    Michał Kowalczyk, Julian Srebrny, Leszek Próchniak, Jan Kownacki & Maciej Kisieliński

  3. Faculty of Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland

    Chrystian Droste

  4. Simon Fraser University, 8888 University Drive, Burnaby, B.C., Canada, V5A 1S6

    Krzysztof Starosta

  5. Department of Physics, Tohoku University, Sendai, Miyagi, 980-8577, Japan

    Takeshi Koike

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  1. Ernest Grodner
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  8. Krzysztof Starosta
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Correspondence to Ernest Grodner, Michał Kowalczyk, Julian Srebrny, Leszek Próchniak, Chrystian Droste, Maciej Kisieliński or Krzysztof Starosta.

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Dedicated to the memory of S.G. Rohoziński, our teacher and friend.

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Grodner, E., Kowalczyk, M., Srebrny, J. et al. The g-factor measurement as an ultimate test for nuclear chirality. Front. Phys. 19, 34202 (2024). https://doi.org/10.1007/s11467-023-1359-2

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