Abstract
Theβ-decay of neutron-rich fission products with mass numbersA=107, 108 and 109 has been investigated at the mass separator LOHENGRIN of the Institute Laue-Lange-vin (ILL) in Grenoble by measuringβγ-coincidences with a large plastic scintillator telescope and a Ge(I)-detector. Theβ-decay energies of 8 nuclei were obtained from the evaluation of more than 40β-endpoint energies. For the nuclei107 Mo,107Tc,108Tc,109Tc and109Ru, theβ-decay energies were determined for the first time; the experimental error in the decay energy of three daughter nuclei was considerably reduced. In addition, the two-neutron separation energies and the nuclear mass excesses were calculated from these experimentalQ β-values and compared with different mass predictions.
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Keyser, U., Münnich, F., Weigert, L.J.: J. Phys G4, L 119 (1978)
Graefenstedt, M., Keyser, U., Münnich, F., Schreiber, F.: Proc. 5th Int. Conf. on Nuclei far from Stability, Rousseau Lake, Canada, AIP Conf. Proc.164, 30 (1988)
Armbruster, P., Asghar, M., Bocquet, J.P., Decker, R., Greif, J., Moll, E., Pfeiffer, B., Schrader, H., Schussler, F., Siegert, G., Wollnik, H.: Nucl. Instrum. Methods139, 213 (1976)
Schreiber, F.: Thesis, University of Braunschweig, FRG (1988)
Graefenstedt, M.: Thesis, University of Braunschweig, FRG (1988)
Graefenstedt, M., Keyser, U., Münnich, F., Schreiber, F.: Nucl. Phys. A491, 373 (1989)
Ohm, H., Paffrath, U., Lhersonneau, G., Sistemich, K.: Institut für Kernphysik, KFA Jülich, Annual Report 1985, p. 30 (1985)
Kaffrell, N., Franz, G., Klein, G., Sümmerer, K., Tittel, G., Trautmann, N., Herrmann, G., Ahrens, H.: CERN 76-13, 483 (1976)
Stachel, J., Kaffrell, N., Stender, E., Sümmerer, K., Trautmann, N., Broden, K., Skarnemark, G., Björnstadt, T., Haldorsen, I.: Radiochim. Acta26, 127 (1979)
Pierson, W.R., Griffin, H.C., Coryell, C.D.: Phys. Rev.127, 1708 (1962)
Kaffrell, N., Hill, P., Rogowski, J., Tetzlaff, H., Trautmann, N., Jacobs, E., Gelder de, P., Frenne de, D., Heyde, K., Skarnemark, G., Alstad, J., Blasi, N., Harakeh, M.N., Sterrenburg, W.A., Wolfsberg, K.: Nucl. Phys. A460, 437 (1986)
Stachel, J., Kaffrell, N., Trautmann, N., Broden, K., Skarnemark, G., Eriksen, D.: Z. Phys. A — Atoms and Nuclei316, 105 (1984)
Franz, G.: Thesis, University of Mainz, FRG (1974)
Pinston, J.A., Schussler, F., Moussa, A.: Nucl.Phys. A133, 124 (1969)
Fettweis, P., Marmol del, P.: Z. Phys. A — Atoms and Nuclei275, 359 (1975)
Haese, R.L., Bertrand, F.E., Harmatz, B., Martin, M.J.: Nucl. Data Sheets37, 289 (1982)
Lederer, C.M., Shirley, V.S. (eds): Table of isotopes. New York, John Wiley and Sons 1978
Wapstra, A.H., Audi, G.: Nucl. Phys. A432, 1 (1985)
Kaffrell, N.: Private communication (1989)
Haustein, P.E.: The 1986–1987 atomic mass predictions. At. Data Nucl. Data Tables39 (2) (1988)
Keyser, U., Münnich, F., Pahlmann, B., Graefenstedt, M., Faust, H., Weikard, H., Pfeiffer, B.: Proc. 7thInt. Conf. on Atomic Masses and Fundamental Constants, AMCO-7, Darmstadt, Germany, THD, Schriftenreihe Wissenschaft und Technik26, 148 (1984)
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This work has been funded by the German Minister for Research and Technology under contract number 06BS452I
We wish to thank Prof. Dr. Kaffrell for the prelimenary information about the decay of109Tc from his measurement. Thanks are also due to Mrs. Ch. Laupheimer for her help in the preparation of the manuscript.
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Graefenstedt, M., Jürgens, P., Keyser, U. et al. Experimental Beta-decay energies of very neutron-rich fission products with 107≦A≦109. Z. Physik A - Atomic Nuclei 334, 239–245 (1989). https://doi.org/10.1007/BF01284550
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DOI: https://doi.org/10.1007/BF01284550