Abstract
The excitation function of the fission probability P E E x) for238U has been measured in the reaction238U(α, α′ f) at 480 MeV bombarding energy. The reaction mechanism of this reaction is discussed for excitation energies belowB nf , the threshold for second chance fission, and aboveB nf up toE x =37 MeV. In comparing with results from fission induced by photons and by particle transfer reactions the (α, α′f) reaction gives too low values for the fission probabilityP f at excitation energies well aboveB nE . The role of the quasi-elastic knock-out process in this reaction is discussed.
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Bjørnholm, S., Lynn, J.E.: Rev. Mod. Phys.52, 725 (1980)
Harakeh, M.N.: Dynamics of nuclear fission and related collective phenomena. In: Lecture Notes in Physics. David, P., Mayer-Kuckuk, T., Woude, A. van der (eds.), Vol. 158. Berlin, Heidel-berg, New York: Springer 1982
Back, B.B., Hansen, O., Britt, H.C., Garrett, J.D.: Phys. Rev. C9, 1924 (1974).
Back, B.B., Britt, H.C., Hansen, O., Leroux, B., Garrett, J.D.: Phys. Rev. C10, 1948 (1974);
Gavron, A., Britt, H.C., Konecny, E., Weber, J., Wilhelmy, J.B.: Phys. Rev. C13, 2374 (1976)
Wu, J.R., Beene, J.R., Bemis, jr., C.E., Bertrand, F.E., Gross, E.E., Horen, H.J., Jones, W.P.: Phys. Rev. C24, 500 (1981)
Ries, H., Kneissl, U., Mank, G., Ströher, H., Wilke, W., Bergère, R., Bourgeois, P., Carlos, P., Fallon, J.L., Garganne, P., Veyssière, A., Cardman, L.S.: Phys. Lett.139B, 254 (1984)
Eder, G., Jasicek, H., Prasad, R., Riehs, P., Müller, H.H., Reichart, W., Schober, P., Steiner, St., Strohmaier, B., Uhl, M.: Acta Phys. Austr.52, 125 (1980)
Morsch, H.P., Rogge, M., Decowski, P., Machner, H., Sükösd, S., David, P., Debrus, J., Hartfiel, J., Janszen, H., Schulze, J.: Phys. Lett.119B, 315 (1982)
Huizenga, J.R., Vandenbosch, R.: In: Nuclear reactions II. Endt, P.M., Schmith, P.B. (eds.), p. 65. Amsterdam: North-Holland 1962
Decowski, P., Morsch, H.P., Rogge, M., Turek, P., Zemlo, L., Gaul, G., Glasow, R., Ludewigt, B., Santo, R., Schumacher, W.: Phys. Lett.141B, 49 (1984)
Decowski, P., Morsch, H.P., Zemlo, L., Rogge, M., Turek, P., Hlawatsch, G.: Annual Report 1983, Kernforschungsanlage Jülich, p. 19. Institut for Nuclear Physics
Shotter, A.C., Gelbke, C.K., Awes, T.C., Back, B.B., Mahoney, J., Symons, T.J.M., Scott, D.K.: Phys. Rev. Lett.43, 569 (1979)
Boudard, A.: In: Ensembles de détection magnétique du Laboratoire National SATURNE. LNS, 1980, CEN Saclay
Saudinos, J., Duchazeaubeneix, J.C., Laspalles, C., Chaminade, R.: Nucl. Instrum Methods111, 77 (1973);
Lugol, J.C., Terrien, Y.: Compte rendu d'activité, p. 260, 1977–1978 DPN Saclay, CEA-N-2070
Vandenbosch, R., Huizenga, J.R.: Nuclear fission. New York: Academic Press 1973
Janszen, H.: Diplome thesis, 1980, University of Bonn (unpublished)
Pflicht, J. van der, Harakeh, M.N., Woude, A. van der., David, P., Debrus, J., Janszen, H., Schulze, J.: Nucl. Phys. A346, 349 (1980)
Leo, R. de, Harakeh, M.N., Micheletti, S., Pflicht, J. van der, Woude, A. van der, David, P., Janszen, H.: Nucl. Phys. A373, 509 (1982)
Schoenmackers, R.: Thesis, 1975, University of Bonn
Bertrand, F.E., Beene, J.R., Bemis, jr., C.E., Gross, E.E., Horen, D.J., Wu, J.R., Jones, W.P.: Phys. Lett.99B, 213 (1981)
Istekov, K.K., Kupriyanov, V.M., Fursov, B.I., Smirenkin, G.N.: Sov. J. Nucl. Phys.29, 595 (1979)
Veyssière, A., Beil, H., Bergère, R., Carlos, P., Leprêtre, A., Kernbath, K.: Nucl. Phys. A199, 45 (1973)
Caldwell, J.T., Dowdy, E.J., Berman, B.L., Alvarez, R.A., Meyer, P.: Phys. Rev.21C, 1215 (1980)
Britt, H.C., Gavron, A.: Dynamics of nuclear fission and related collective phenomena. In: Lecture Notes in Physics, David, P., Mayer-Kuckuk, T., Woude, A. van der (eds.), Vol. 158, p. 24. Berlin, Heidelberg, New York: Springer 1982
Cheifetz, E., Britt, H.C., Wilhelmy, J.B.: Phys. Rev. C24, 519 (1981)
Harakeh, M.N.: J. Phys. (Paris) Coll. C4, 45, 155 (1984)
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Dedicated to Professor Theo Mayer-Kuckuk on the occasion of his 60th birthday
This work has been done at Laboratoire National Saturne
In partial fulfillment of the requirements of a Dr. rer. nat.
We remember with emotion Mme le Professeur Dr. H. Faraggi. The authors from the University of Bonn appreciate thankfully the encouraging and warm hospitality offered by Professor Dr. J. Thirion at the Laboratoire National Saturne. We are grateful for the permanent support and encouragement by Professor Dr. R. Beurtey, Professor Dr. M. Jean, Professor Dr. R. Joly, and Professor Dr. P. Radvanyi. The experienced advice of Dr. R. Babinet during the measurement was particularly useful. The excellent cooperation with Dr. R. Vienet and his staff of the synchrotron is acknowledged. The valuable help of Mr. J. Habault and Mr. J. Lemeur has most effectively contributed to the success of our guest stay. The work was financially supported by the Bundesminister für Forschung und Technologie der Bundesrepublik Deutschland.