Abstract
Beta-delayed neutrons and high-energyγ-rays following decay of137I have been studied in order to characterizeβ-decay to and deexcitation of neutron-unbound levels in137Xe. The totalγ-ray intensity observed accounts for at least 20% of theβ-intensity to levels aboveB n . No evidence was found for neutron andγ-ray emission from the same levels. With the experimentalβ-strength function aboveB n detailed tests were performed on the reproduction of the experimental neutron spectrum, the level density and Porter-Thomas fluctuations of the reducedβ-transition probabilities to highly excited states in137Xe.
Similar content being viewed by others
References
Nuh, F.M., Slaughter, D.R., Prussin, S.G., Ohm, H., Rudolph, W., Kratz, K.-L.: Nucl. Phys. A293, 410 (1977)
Kratz, K.-L., Rudolph, W., Ohm, H., Franz, H., Zendel, M., Herrmann, G., Prussin, S.G., Nuh, F.M., Shihab-Eldin, A.A., Slaughter, D.R., Halverson, W., Klapdor, H.V.: Nucl. Phys. A317, 335 (1979)
Prussin, S.G., Lanier, R.G., Struble, G.L., Mann, L.G., Schoenung, S.M.: Phys. Rev. C16, 1001 (1977)
Keyser, U., Berg, H., Münnich, F., Pahlmann, B., Hawerkamp, K., Pfeiffer, B., Schrader, H., Monnand, E.: Proc. 6th Int. Conf. on Atomic Masses, East Lansing (Michigan), Sept. 18–21 (1979)
Rudstam, G.: Proc. IAEA Consultants' Meeting on Delayed Neutron Properties. Vienna, INDC(NDS)-107/G+Special, 103 (1979)
Takahashi, K.: Progr. Theoret. Phys.47, 1500 (1972)
Shalev, S., Rudstam, G.: Nucl. Phys. A230, 153 (1974)
Gjøtterud, O.K., Hoff, P., Pappas, A.C.: Nucl. Phys. A303, 153 (1978) and A303, 295 (1978)
Hardy, J.C., Jonson, B., Hansen, P.G.: Nucl. Phys. A305, 15 (1978)
Prussin, S.G., Oliveira, Z.M., Kratz, K.-L.: Nucl. Phys. A321, 396 (1979)
Eckhardt, W., Herrmann, G., Schüssler, H.D.: Z. Anal. Chem.226, 71 (1967)
Ohm, H., Ristori, C., Kratz, K.-L., Rudolph, W.: Annual Report. Institut für Kernchemie, Universität Mainz, p. 55 (1977)
Trautmann, N., Herrmann, G.: J. Radioanal. Chem.32, 533 (1976)
Franz, H., Rudolph, W., Ohm, H., Kratz, K.-L., Herrmann, G., Nuh, F.M., Slaughter, D.R., Prussin, S.G.: Nucl. Instrum.144, 253 (1977)
Ohm, H., Sümmerer, K., Otto, H.: Program Library, Institut für Kernchemie, Universität Mainz (1975)
Moll, E., Schrader, H., Siegert, G., Asghar, M., Bocquet, J.P., Bailleul, G., Gautheron, J.P., Greif, J., Crawford, G.I., Chauvin, C., Ewald, H., Wollnik, H., Armbruster, P., Fiebig, G., Lawin, H., Sistemich, K.: Nucl. Instrum.123, 615 (1975)
Zirnheld, J.P.: Nucl. Instrum.114, 517 (1974);158, 409 (1979)
Western, W.R., Hill, J.C., Talbert, W.L., Schick, W.C.: Phys. Rev. C15, 1822 (1977)
Zendel, M.: Doctoral Dissertation, Mainz (1978)
Blachot, J., Fiche, C.: At. Data Nucl. Data Tables20, 241 (1977)
Porter, C.E., Thomas, R.G.: Phys. Rev.104, 483 (1956)
Gilbert, A., Cameron, A.G.W.: Can. J. Phys.43, 1466 (1965)
Hodgson, R.E.: Nuclear Reactions and Nuclear Structure. p. 319. Oxford: Oxford University Press 1971
Truran, J.W., Cameron, A.G.W., Hilf, E.: Proc. Int. Conf. on the Properties of Nuclei far from the Region of Beta-Stability. Leysin, CERN-Report 70-30, 275 (1970)
Schröder, A., Ohm, H., Prussin, S.G.: Program Library. Institut für Kernchemie, Universität Mainz (1979)
Wilkinson, D.H., Macefield, B.E.F.: Nucl. Phys. A232, 58 (1974)
Blatt, J.M., Weisskopf, V.F.: Theoretical Nuclear Physics. Ch. VIII, 5 and IX, 2A. New York: Wiley 1952
Auerbach, E.H., Perey, F.G.J.: Brookhaven Natl. Lab. Report, BNL-765 (1962)
Wilmore, D., Hodgson, P.E.: Nucl. Phys.55, 673 (1964)
Mughabghab, S.F., Garber, D.I.: Brookhaven Natl. Lab. Report, BNL-325 (1973)
Author information
Authors and Affiliations
Additional information
Alexander von Humboldt-Fellow, on sabbatical leave from Department of Nuclear Engineering, University of California, Berkeley, CA 94720, USA
The authors would like to acknowledge the assistance of M. Brügger during part of the experiments, and helpful discussions with G. Herrmann. We also thank the staff of the Mainz TRIGA reactor for numerous irradiations and the staff of LOHENGRIN for their support and the maintainance of the separator facility. This work was, in part, supported by the German Bundesministerium für Forschung und Technologie.
Rights and permissions
About this article
Cite this article
Ohm, H., Zendel, M., Prussin, S.G. et al. Beta-delayed neutrons and high-energy gamma-rays from decay of137I. Z Physik A 296, 23–33 (1980). https://doi.org/10.1007/BF01415611
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01415611