Levels of 89Nb populated in the 89Y(3He, 3nγ) reaction

Gamma-ray spectroscopy of89Nb

“…Transitions from the 830 and 1,272 keV levels were not observed in the present study; these levels were observed by Gallagher et al [5] and are included to clarify the level scheme. While the present results do not conflict with those of Spalek et al [4], they clarify several ambiguities in the earlier scheme. The 762.8 keV transition clearly belongs below, not above, the 446.6 keV transition.…”

“…The first two states of SgNb were found to have J~=9/2 + and 1/2-, and to be separated by at most 35 keV. Several higher-spin levels of 89Nb were observed by Spalek et al [4] in a study of the s9y(3He, 3nV) reaction, but only a few J~ assignments were made. Most recently, Gallagher et al [ …”

High-spin states in89Nb,88Zr and88Nb with a shell-model description of theN=48 andN=47 nuclei

“…States in S9Nb have been observed previously by Serduke and Henning [5] using the 9/Mo(p,c~) transfer reaction, by Spalek etal. [6] using the S9y(3He, 3n7) reaction, and by Gallagher etal. [7] via the beta-decay of 89Mo.…”

Shell model studies in89Nb

“…There is a need to explain the considerable experimental data [1][2][3][4] that have become available on the nucleus 89Nb in recent years. In the general, nuclei near the strong N= 50 shell closure and the Z=38 subshell closure have been fairly well described in terms of the nuclear shell model scheme [5][6][7].…”