Abstract
A Residue Implantation Detection System has been used in conjunction with the Daresbury Recoil Mass Separator in a search for radioactivity from the unknown nuclides108I and105Te. In the reaction of 260 MeV58Ni ions with a54Fe target two new decay lines at energies of 3.730±0.025 MeV and 3.885±0.025 MeV corresponding to cross sections of approximately 0.3 μb and 0.4 μb respectively were identified in theA=108 region of the separator's focal plane. These decay lines are tentatively assigned to the alpha decays of108I. No evidence for a proton decay branch of this nuclide could be found. In a second reaction in which a50Cr target was bombarded with 230 MeV58Ni ions, no alpha decay peak from105Te could be identified. Cross section dependent half life limits were determined from which correspondingQ-value limits were deduced.
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References
Comay, E., Kelson, I., Zidon, A.: At. Data Nucl. Data Tables39, 213 (1988)
Gillitzer, A., Faestermann, T., Hartel, K., Kienle, P., Nolte, E.: Z. Phys. A — Atomic Nuclei326, 107 (1987)
Faestermann, T., Gillitzer, A., Hartel, K., Kienle, P., Nolte, E.: Proceedings of the International Conference on Nuclear Physics, Florence, 1983. Ricci, R.A. (ed.), Vol. 1, p. 311. Bologna: Tipographia Compositori 1983
Faestermann, T., Gillitzer, A., Hartel, K., Kienle, P., Nolte, E.: Phys. Letts. B137, 23 (1984)
Hofmann, S., Agarwal, Y.K., Armbruster, P., Heßberger, F.P., Larsson, P.O., Münzenberg, G., Poppensieker, K., Reisdorf, W., Schneider, J.R.H., Schött, H.J.: Proceedings of the 7th International Conference on Atomic Masses and Fundamental Constants (AMCO7). Klepper, O. (ed.), THD-Schriftenreihe Wissenschaft und Technik26, 184 (1984)
Berthes, G.: Ph.D. Thesis: Bau und Erprobung eines Magnetspektrometers für das Geschwindigkeitsfilter SHIP, GSI Scientific Report GSI-87-12, 1987, pp. 80–9
Woods, P.J., Bennett, S.J., Freer, M., Fulton, B.R., Page, R.D., Connell, K.A., Cunningham, R.A., Groves, J., Simpson, J., James, A.N., Hotchkis, M.A.C., Rae, W.D.M.: Nucl. Instrum. Methods A276, 195 (1989)
James, A.N., Morrison, T.P., Ying, K.L., Connell, K.A., Price,.G., Simpson, J.: Nucl. Instrum. Methods A267, 144 (1988)
Haustein, P.E. (ed.): 1986-7 Atomic Mass Predictions. At. Data Nucl. Data Tables39, 1988
Wapstra, A.H., Audi, G., Hoekstra, R.: At. Data Nucl. Data Tables39, 281 (1988)
Wapstra, A.H., Audi, G.: Nucl. Phys. A432, 1 (1985)
Möller, P., Nix, J.R.: At. Data Nucl. Data Tables39, 213 (1988)
Myers, W.D.: At. Data Nucl. Data Tables17, 411 (1976)
Schardt, D., Batsch, T., Kirchner, R., Klepper, O., Kurcewicz, W., Roeckl, E., Tidemand-Petersson, P.: Nucl. Phys. A368, 153 (1981)
Schardt, D., Kirchner, R., Klepper, O., Kurcewicz, W., Roeckl, E., Tidemand-Petersson, P., Ewan, G.T., Hagberg, E., Jonson, B., Mattsson, S., Nyman, G.: Nucl. Phys. A326, 65 (1979)
Beckermann, M., Blann, M.: Phys. Rev. C17, 1615 (1978). (ALERT is a more sophisticated version of the code MB-II)
Macfarlane, R.D., Siivola, A.T.: Phys. Rev. Letts.14, 114 (1965)
Roeckl, E., Kirchner, R., Klepper, O., Nyman, G., Reisdorf, W., Schardt, D., Wien, K., Fass, R., Mattsson, S.: Phys. Lett. B78, 393 (1978)
Hardy, J.C.: Particle emission from nuclei. Poenaru, D.N., Ivascu, M. (eds.), Vol. III, p. 107. Florida: CRC Press 1989
Tidemand-Petersson, P., Kirchner, R., Klepper, O., Roeckl, E., Schardt, D., Płochocki, A., Zylicz, J.: Nucl. Phys. A437, 342 (1985)
Jensen, A.S., Hansen, P.G., Jonson, B.: Nucl. Phys. A431, 393 (1984)
Kirchner, R., Klepper, O., Pfützner, M., Roeckl, E., Rykaczewski, K., Schardt, D., van Duppen, P., Huyse, M., Reusen, G., Płochocki, A., Szerypo, J., Zylicz, J.: Contributions to the Spring Meeting of Nuclear Physics Sections, p. 1441. Strasbourg, France, 1990
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RDP, SJB and MF would like to thank the SERC for financial support during the course of this work and all of us would like to thank the crews at Daresbury for providing the58Ni beams.