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Tandel SK, Khoo TL, Seweryniak D, et al. K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei. Phys Rev Lett. 2006;97(8):082502doi: 10.1103/PhysRevLett.97.082502.
Tandel, S. K., Khoo, T. L., Seweryniak, D., Mukherjee, G., Ahmad, I., Back, B., Blinstrup, R., Carpenter, M. P., Chapman, J., Chowdhury, P., Davids, C. N., Hecht, A. A., Heinz, A., Ikin, P., Janssens, R. V., Kondev, F. G., Lauritsen, T., Lister, C. J., Moore, E. F., Peterson, D., Reiter, P., Tandel, U. S., Wang, X., & Zhu, S. (2006). K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei. Physical review letters, 97(8), 082502. https://doi.org/10.1103/PhysRevLett.97.082502
Tandel, S K, et al. "K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei." Physical review letters vol. 97,8 (2006): 082502. doi: https://doi.org/10.1103/PhysRevLett.97.082502
Tandel SK, Khoo TL, Seweryniak D, Mukherjee G, Ahmad I, Back B, Blinstrup R, Carpenter MP, Chapman J, Chowdhury P, Davids CN, Hecht AA, Heinz A, Ikin P, Janssens RV, Kondev FG, Lauritsen T, Lister CJ, Moore EF, Peterson D, Reiter P, Tandel US, Wang X, Zhu S. K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei. Phys Rev Lett. 2006 Aug 25;97(8):082502. doi: 10.1103/PhysRevLett.97.082502. Epub 2006 Aug 22. PMID: 17026297.
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Phys Rev Lett. 2006 Aug 25;97(8):082502. doi: 10.1103/PhysRevLett.97.082502. Epub 2006 Aug 22.

K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei.

Physical review letters

S K Tandel, T L Khoo, D Seweryniak, G Mukherjee, I Ahmad, B Back, R Blinstrup, M P Carpenter, J Chapman, P Chowdhury, C N Davids, A A Hecht, A Heinz, P Ikin, R V F Janssens, F G Kondev, T Lauritsen, C J Lister, E F Moore, D Peterson, P Reiter, U S Tandel, X Wang, S Zhu

Affiliations

  1. Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA.

PMID: 17026297 DOI: 10.1103/PhysRevLett.97.082502

Abstract

We have identified two isomers in 254No, built on two- and four-quasiparticle excitations, with quantum numbers K pi = 8- and (14+), as well as a low-energy 2-quasiparticle Kpi = 3+ state. The occurrence of isomers establishes that K is a good quantum number and therefore that the nucleus has an axial prolate shape. The 2-quasiparticle states probe the energies of the proton levels that govern the stability of superheavy nuclei, test 2-quasiparticle energies from theory, and thereby check their predictions of magic gaps.

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