Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction

E. Elhami; J. N. Orce; M. Scheck; S. Mukhopadhyay; S. N. Choudry; M. T. McEllistrem; S. W. Yates; C. Angell; M. Boswell; B. Fallin; C. R. Howell; A. Hutcheson; H. J. Karwowski; J. H. Kelley; Y. Parpottas; A. P. Tonchev; W. Tornow

doi:10.1103/PhysRevC.78.064303

Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction

E. Elhami, J. N. Orce, M. Scheck, S. Mukhopadhyay, S. N. Choudry, M. T. McEllistrem, S. W. Yates, C. Angell, M. Boswell, B. Fallin, C. R. Howell, A. Hutcheson, H. J. Karwowski, J. H. Kelley, Y. Parpottas, A. P. Tonchev, W. Tornow

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Abstract

The low-lying structure of 4094Zr was studied with the (n,n'γ) reaction, and a level scheme was established based on excitation function and γγ coincidence measurements. Branching ratios, multipole mixing ratios, and spin assignments were determined from angular distribution measurements. Lifetimes of levels up to 3.4 MeV were measured by the Doppler-shift attenuation method, and for many transitions the reduced transition probabilities were determined. In addition to the anomalous 22+ state, which has a larger B(E2;22+→01+) value than the B(E2;21+→01+), the experimental results revealed interesting and unusual properties of the low-lying states in Zr94. In a simple interpretation, the excited states are classified in two distinct categories, i.e., those populating the 22+ state and those decaying to the 21+ state.

Original language	English
Article number	064303
Journal	Physical Review C - Nuclear Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.78.064303
State	Published - Dec 1 2008

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Elhami, E., Orce, J. N., Scheck, M., Mukhopadhyay, S., Choudry, S. N., McEllistrem, M. T., Yates, S. W., Angell, C., Boswell, M., Fallin, B., Howell, C. R., Hutcheson, A., Karwowski, H. J., Kelley, J. H., Parpottas, Y., Tonchev, A. P., & Tornow, W. (2008). Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction. Physical Review C - Nuclear Physics, 78(6), [064303]. https://doi.org/10.1103/PhysRevC.78.064303

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title = "Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction",

abstract = "The low-lying structure of 4094Zr was studied with the (n,n'γ) reaction, and a level scheme was established based on excitation function and γγ coincidence measurements. Branching ratios, multipole mixing ratios, and spin assignments were determined from angular distribution measurements. Lifetimes of levels up to 3.4 MeV were measured by the Doppler-shift attenuation method, and for many transitions the reduced transition probabilities were determined. In addition to the anomalous 22+ state, which has a larger B(E2;22+→01+) value than the B(E2;21+→01+), the experimental results revealed interesting and unusual properties of the low-lying states in Zr94. In a simple interpretation, the excited states are classified in two distinct categories, i.e., those populating the 22+ state and those decaying to the 21+ state.",

author = "E. Elhami and Orce, {J. N.} and M. Scheck and S. Mukhopadhyay and Choudry, {S. N.} and McEllistrem, {M. T.} and Yates, {S. W.} and C. Angell and M. Boswell and B. Fallin and Howell, {C. R.} and A. Hutcheson and Karwowski, {H. J.} and Kelley, {J. H.} and Y. Parpottas and Tonchev, {A. P.} and W. Tornow",

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language = "English",

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Elhami, E, Orce, JN, Scheck, M, Mukhopadhyay, S, Choudry, SN, McEllistrem, MT, Yates, SW, Angell, C, Boswell, M, Fallin, B, Howell, CR, Hutcheson, A, Karwowski, HJ, Kelley, JH, Parpottas, Y, Tonchev, AP & Tornow, W 2008, 'Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction', Physical Review C - Nuclear Physics, vol. 78, no. 6, 064303. https://doi.org/10.1103/PhysRevC.78.064303

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T1 - Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction

AU - Elhami, E.

AU - Orce, J. N.

AU - Scheck, M.

AU - Mukhopadhyay, S.

AU - Choudry, S. N.

AU - McEllistrem, M. T.

AU - Yates, S. W.

AU - Angell, C.

AU - Boswell, M.

AU - Fallin, B.

AU - Howell, C. R.

AU - Hutcheson, A.

AU - Karwowski, H. J.

AU - Kelley, J. H.

AU - Parpottas, Y.

AU - Tonchev, A. P.

AU - Tornow, W.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - The low-lying structure of 4094Zr was studied with the (n,n'γ) reaction, and a level scheme was established based on excitation function and γγ coincidence measurements. Branching ratios, multipole mixing ratios, and spin assignments were determined from angular distribution measurements. Lifetimes of levels up to 3.4 MeV were measured by the Doppler-shift attenuation method, and for many transitions the reduced transition probabilities were determined. In addition to the anomalous 22+ state, which has a larger B(E2;22+→01+) value than the B(E2;21+→01+), the experimental results revealed interesting and unusual properties of the low-lying states in Zr94. In a simple interpretation, the excited states are classified in two distinct categories, i.e., those populating the 22+ state and those decaying to the 21+ state.

AB - The low-lying structure of 4094Zr was studied with the (n,n'γ) reaction, and a level scheme was established based on excitation function and γγ coincidence measurements. Branching ratios, multipole mixing ratios, and spin assignments were determined from angular distribution measurements. Lifetimes of levels up to 3.4 MeV were measured by the Doppler-shift attenuation method, and for many transitions the reduced transition probabilities were determined. In addition to the anomalous 22+ state, which has a larger B(E2;22+→01+) value than the B(E2;21+→01+), the experimental results revealed interesting and unusual properties of the low-lying states in Zr94. In a simple interpretation, the excited states are classified in two distinct categories, i.e., those populating the 22+ state and those decaying to the 21+ state.

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Experimental study of the low-lying structure of Zr94 with the (n,n'γ) reaction

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