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Shape evolution in odd-A 137 Pm

  • Regular Article - Experimental Physics
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Abstract

The odd mass nucleus 137Pm has been studied to high spins through the 109Ag(32S, 2p2n)137Pm reaction at an incident beam energy of 150 MeV. The de-exciting γ-rays were detected using an array of 18 Compton suppressed clover detectors. The level scheme of 137Pm has been extended up to \(J^\pi = \tfrac{{43}} {2}^ -\) and excitation energy of E x ≅ 6 MeV with the observation of 42 new gamma transitions. The linear polarization (IPDCO) measurements for the γ-ray transitions have been done for the first time. The spin and parity assignments for most of the reported levels have been made using these results and the coincidence angular anisotropy (RDCO) measurements. The nuclear shape evolution is discussed in the light of Total Routhian Surface (TRS) and Cranked Shell Model (CSM) calculations.

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Authors and Affiliations

  1. Inter University Accelerator Centre, 110 067, New Delhi, India

    A. Dhal, D. Negi, G. Mohanto, J. Gehlot, R. Kumar, S. Nath, R. P. Singh, J. J. Das, S. Muralithar, N. Madhavan, R. K. Bhowmik & S. C. Pancholi

  2. Department of Physics, Banaras Hindu University, 221 005, Varanasi, India

    R. K. Sinha

  3. Department of Physics, University of Allahabad, 211 001, Allahabad, India

    T. Trivedi

  4. Department of Nuclear Physics, Andhra University, 530 003, Visakhapatnam, India

    M. K. Raju

  5. Department of Physics, Indian Institute of Technology Roorkee, 247 667, Roorkee, India

    D. Choudhury & A. K. Jain

  6. Department of Physics & Astrophysics, Delhi University, 110 007, Delhi, India

    S. Kumar

  7. UGC-DAE Consortium for Scientific Research, Kolkata Centre, 700 098, Kolkata, India

    S. S. Ghugre & A. K. Sinha

  8. Ramjas College, Delhi University, 110 007, Delhi, India

    J. B. Gupta

  9. Guru Ghasidas University, Bilaspur, 495 009, Chhattisgarh, India

    I. M. Govil & L. Chaturvedi

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  1. A. Dhal
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  2. R. K. Sinha
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  3. D. Negi
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  8. S. Kumar
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  9. J. Gehlot
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  10. R. Kumar
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  11. S. Nath
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  12. S. S. Ghugre
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  15. S. Muralithar
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  16. N. Madhavan
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  17. J. B. Gupta
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  18. A. K. Sinha
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  21. R. K. Bhowmik
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Correspondence to A. Dhal.

Additional information

Communicated by A.A. Korsheninnikov

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Dhal, A., Sinha, R.K., Negi, D. et al. Shape evolution in odd-A 137 Pm. Eur. Phys. J. A 48, 28 (2012). https://doi.org/10.1140/epja/i2012-12028-3

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  • DOI: https://doi.org/10.1140/epja/i2012-12028-3

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