Abstract
The reaction89Y(α, 2n γ) was used to populate excited states in91Nb. The de-excitation of these states was studied by in-beam gamma-ray spectroscopy, involving the measurement of excitation functions, angular distributions and life-times. A 17/2− isomeric state at 2034 keV and withT 1/2=3.8±0.2 μs was observed; it is interpreted as the highest-spin state of the {(g 9/2)2 (p 1/2)} proton configuration. The experimental results are compared with other published data and with shell-model calculations.
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Cohen, S., Lawson, R.D., Macfarlane, M.H., Soga, M.: Phys. Lett.10, 195 (1964)
Auerbach, N., Talmi, I.: Nucl. Phys.64, 458 (1965)
Vervier, J.: Nucl. Phys.75, 17 (1966)
Ball, J.B., McGrory, J.B., Larsen, J.S.: Phys. Lett.41B, 581 (1972)
Hesse, K., Finckh, E.: Nucl. Phys. A141, 417 (1970)
De Barros, S., Maurenzig, P.R., Baptista, G., Canto, L.F., De Pinho, A.G., Jeronymo, J.M.F.: Z. Naturforsch.25a, 1250 (1970)
Ohnuma, H., Yntema, J.L.: Phys. Rev.176, 1416 (1968)
Picard, J., Bassani, G.: Nucl. Phys. A131, 636 (1969)
Knöpfle, K.T., Rogge, M., Mayer-Böricke, C., Pedersen, J., Burch, D.: Nucl. Phys. A159, 642 (1970)
Rauch, F.: Z. Physik243, 105 (1971)
Kim, H.J., Robinson, R.L., Johnson, C.H., Raman, S.: Nucl. Phys. A142, 35 (1970)
Mathews, D.L., Lindsey, T.P., Koike, M., Moore, C.F.: Phys. Rev. C4, 1876 (1971)
Matsuki, S., Yoshida, Y., Hyakutake, M., Matoba, M., Nakamura, S., Kumabe, I.: Nucl. Phys. A174, 343 (1971)
Matsuki, S., Nakamura, S., Hyakutake, M., Matoba, M., Yoshida, Y., Kumabe, I.: Nucl. Phys. A201, 608 (1973)
Grecescu, M., Nilsson, A., Harms-Ringdahl, L.: Nucl. Phys. A212, 429 (1973)
Newton, J.O.: Progress in Nuclear Physics,11, 53 (1969)
Moteca, P., Andruscenco, P., Ivanov, E., Macovei, M., Păpureanu, S., Stancu, V.: Rev. Roum. de Phys.12, 479 (1967)
Deberth, C.: Unpublished programs
Jägare, S.: Res. Inst. Phys. Stockholm, Annual Report, 96, 1968
Yamazaki, T.: Nucl. Data A3, 1 (1967)
Nuclear Data Sheets B7, 329 (1972)
Ivanov, E.A., Iordachescu, A., Pascovici, G.: Rev. Roum. Phys.14, 317 (1969)
Nilsson, A.: Private communication
Nuclear Spin-Parity Assignments, p. 94. Editor: N.B. Gove, New York: Academic Press 1966
Kharitonov, Yu.L., Peker, L.K., Sliv, L.A.: Izv. Akad. Nauk. SSSR, ser. fiz.35, 94 (1971)
Löbner, K.G.: Nucl. Phys.58, 49 (1964)
Gloeckner, D.H., Macfarlane, M.H., Lawson, R.D., Serduke, F.J.D.: Phys. Lett.40B, 597 (1972)
Baba, C.V.K., Fossan, D.B., Faestermann, T., Feilitzsch, F., Mayer, M.R., Raghavan, P., Raghavan, D.S., Signorini, C.: Intern. Conf. on Nuclear Moments and Nuclear Structure Osaka, Sept. 4–8, 1972
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The authors want to express their thanks to Dr. A. Nilsson (Research Institute for Physics, Stockholm), for the communication of unpublished results and to Dr. C. Deberth for his contribution to this work. The cooperation of the cyclotron crew is gratefully acknowledged.
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Berinde, A., Dumitru, R.O., Grecescu, M. et al. Excited states in91Nb populated in the89Y(α, 2nγ) reaction. Z. Physik 269, 117–123 (1974). https://doi.org/10.1007/BF01669052
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DOI: https://doi.org/10.1007/BF01669052