The systematics of h 11 2 proton alignment in 157, 158, 159Er

M. A. Riley, J. Simpson, R. Aryaeinejad, J. R. Cresswell, P. D. Forsyth, D. Howe, P. J. Nolan, B. M. Nyakó, J. F. Sharpey-Schafer, P. J. Twin, J. Bacelar, J. D. Garrett, G. B. Hagemann, B. Herskind, A. Holm

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Rotational bands have been observed in 157, 158, 159Er to very high spin (J ∼ 41 h {combining short stroke overlay}). Upbends are found, due to the alignment of two h 11 2 protons at 0.40 {less-than or approximate} h {combining short stroke overlay}ω {less-than or approximate} 0.46 MeV in all bands. A systematic shift with neutron number of the band-crossing frequency is observed and is related to a change in quadrupole deformation ε{lunate}2.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalPhysics Letters B
Issue number4
Publication statusPublished - Feb 9 1984


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Riley, M. A., Simpson, J., Aryaeinejad, R., Cresswell, J. R., Forsyth, P. D., Howe, D., Nolan, P. J., Nyakó, B. M., Sharpey-Schafer, J. F., Twin, P. J., Bacelar, J., Garrett, J. D., Hagemann, G. B., Herskind, B., & Holm, A. (1984). The systematics of h 11 2 proton alignment in 157, 158, 159Er. Physics Letters B, 135(4), 275-278.