Abstract
Excited states of73Se have been investigated up to spin, 21/2 using techniques of in-beamγ-ray spectroscopy in connection with the70Ge(α, n) reaction. Mean lifetimes of 12 levels have been determined applying Doppler-shift andγ-RF-methods. Five different bands have been identified that reflect a variety of different excitation modes. The decoupled 9/2+ band is likely to correspond to an oblate deformation while the 5/2+ band is interpreted as a strongly coupled prolate band built on the Nilsson configuration [422] 5/2+. The 3/2− band is a strongly coupled band built on the [301] 3/2} configuration.Nuclear reactions:70Ge(α,n),E=14, 16, 18, 19, 20MeV; measuredE γ,I γ,σ(E γ,θ),γγ-coin, linear polarization, DSA,γ(t).75Se deduced levels,I, π, τ, δ(E2/M1), B(σλ). Enriched targets, Ge detectors.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Hamilton, J.W., Ramayya, A.V., Pinkston, W.T., Ronningen, R.M., Garcia-Bermudez, G., Carter, W.K., Robinson, R.L., Kim, W.J., Sayer, R.O.: Phys. Rev. Lett.32, 239 (1974)
Piercey, R.B., Ramayya, A.V., Ronningen, R.M., Hamilton, J.W., Maruhn-Rezwani, V., Robinson, R.L., Kim, W.J.: Phys. Rev. C19, 1344 (1979)
Mylaeus, T., Busch, J., Eberth, J., Liebchen, M., Sefzig, R., Skoda, S., Teichert, W., Wiosna, M., Brentano, P. von, Schiffer, K., Zell, K.O., Ramayya, A.V., Maier, K.H., Grawe, W., Kluge, A., Nazarewicz, W.: J. Phys. G15, L135 (1989)
Heese, J., Lieb, K.P., Lühmann, L., Raether, F., Wörmann, B., Alber, D., Grawe, H., Eberth, J., Mylaeus, T.: Z. Phys. A — Atomic Nuclei325, 45 (1986)
Piercey, R.B., Hamilton, J.H., Soundranayagam, R., Ramayya, A.V., Maguir, C.F., Sun, X.-J., Zhao, Z.Z., Robinson, R.L., Kim, H.J., Frauendorf, S., Döring, J., Funke, L., Winter, G., Roth, J., Cleemann, L., Eberth, J., Neumann, W., Wells, J.C., Lin, J., Rester, A.C., Carter, H.K.: Phys. Rev. Lett.51, 1514 (1981)
Heese, J., Blumenthal, D.J., Chisthti, A.A., Chowdhury, P., Crowell, B., Ennis, P.J., Lister, C.J., Winter, Ch.: Phys. Rev. C43, R921 (1991)
Piercy, R.B., Ramayya, A.V., Hamilton, J.W., Sun, X.-J., Robinson, R.L., Kim, W.J., Well, J.C.: Phys. Rev. C25, 1941 (1982)
Gross, C.J., Heese, J., Lieb, K.P., Ulbig, S., Nazarewicz, W., Lister, C.J., Varley, B.J., Billowes, J., Chrishti, A.A., McNeil, J.H., Gelletly, W.: Nucl. Phys. A501, 367 (1989)
Kaplan, M.S., Saladin, J.X., Faro, L., Winchell, D.F., Takai, H., Knott, C.N.: Phys. Lett. B215, 251 (1988)
Wiosna, M., Busch, J., Eberth, J., Liebchen, M., Mylaeus, T., Schmal, N., Sefzig, R., Skoda, S., Teichert, W.: Phys. Lett. B200, 255 (1988)
Zell, K.O., Friedrichs, H.G., Heits, B., Brentano, P. von, Protop, C.: Z. Phys. A — Atoms and Nuclei276, 371 (1976)
Dewald, A., Gelberg, A., Kaup, U., Richter, R., Zell, K.O., Brentano, P. von: Z. Phys.326, 509 (1987)
Seiffert, F., Lieberz, W., Schmittgen, K.P., Reinhardt, R., Wirowski, R., Wrzal, R., Zell, K.O., Brentano, P. von, Schwengner, R., Funke, L.: Z. Phys. A — Atomic Nuclei336, 242 (1990)
Hanewinkel, H.: Program LEONE, (unpublished)
Albers, S., Clauberg, A., Dewald, A., Wesselborg, C., Zilges, A.: The interactive peak fitting code LEONE, Verhandlungen der DPG (VI) 23, p. 227. Berlin 1988
Zipper, W., Dewald, A., Lieberz, W., Reinhardt, R., Dichter, W., Seiffert, F., Brentano, P. von: Nucl. Phys. A504, 36 (1989)
Zobel, V., Cleemann, L., Eberth, J., Hellmeister, H.P., Neumann, W., Wiehl, N.: Nucl. Instrum. Methods171, 223 (1980)
Lindhard, J., Nielsen, V., Scharff, M.: K. Dan. Vidensk Selsk. Mat. Fys. Medd.36 (1968), no. 10
Andrejtscheff, W., Senba, M., Tsoupas, N., Ding, Z.Z.: Nucl. Instrum. Methods204, 123 (1982)
Konijn, J., Klank, B., Spenny, D.L., Ristinen, R.A.: Nucl. Phys. A138, 577 (1969)
Wiosna, M.: Thesis, Universität Köln 1988 (unpublished)
Funke, L., Döring, J., Kemnitz, P., Will, E., Winter, G., Hildingsson, L., Johnson, A., Lindblad, Th.: Nucl. Phys., A455, 206 (1986)
Skoda, S., Wood, J.L., Eberth, J., Busch, J., Liebchen, M., Myläus, T., Schmal, N., Sefzig, R., Teichert, W., Wiosna, M.: Z. Phys. A — Atomic Nuclei336, 391 (1990)
Chishti, A.A., Campbell, M., Gelletly, W., Göttig, L., James, A.N., Lister, C.J., Love, D.J.G., McNeill, J.H., Moscrop, R., Skeppstedt, O., Varley, B.J.: Proc. of the int. workshop on nucl. structure of the Zirkonium region, Bad Honnef/FRG, p. 320, April 1988
Kaplan, M.S., Saladin, J.X., Winchell, D.F., Takai, H., Dudek, J.: (to be published)
Honusek, M., Spalek, A., Adam, J., Tlusty, P., Döring, J., Funke, L., Schwengner, R., Winter, G.: Ann. Rep. 1988, Zfk-667, 27 (1989)
Schwengner, R., Döring, J., Funke, L., Winter, G., Johnson, A., Nazarewicz, W.: Nucl. Phys. A509, 550 (1990)
Aoki, T., Furuno, K., Tagishi, Y., Ohya, S., Ruan, J.-Z. Ruan: At. Data Nucl. Data Tables23, 349 (1979)
Author information
Authors and Affiliations
Additional information
Dedicated to Prof. Dr. P. Kienle on the occasion of his 60th birthday
We would like to thank Dr. J. Eberth, Prof. A. Gelberg and Dr. A. Dewald for stimulating discussions. This work was supported by the Deutsches Bundesministerium für Forschung und Technologie (BMFT), Bonn, under contract no. 06OK143 and by the Büro für zwischenstaatliche Beziehungen der Universität Erlangen.