Abstract
The absolute cross section σ(E) of the3He(α, γ)7Be reaction has been measured fromE c.m. =195 to 686 keV. The studies employed both a supersonic jet gas target and an extended gas target, and were carried out by the observation of the prompt capture γ-ray transitions as well as the7Be residual nuclei. The absolute cross sections deduced from the capture γ-rays are in good agreement with most previous work and remove a discrepancy with other earlier work. In comparison, the σ(E) values obtained from the7Be residual nuclei are systematically higher, suggesting a small production of additional7Be by contaminant reactions.
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Bahcall, J.N., Davis, R.: Essays in nuclear astrophysics. Barnes, C.A., Clayton, D.D., Schramm, D.N. (eds.), p. 243. Cambridge: Cambridge University Press 1982
Bahcall, J.N., Huebner, W.F., Lubow, S.H., Parker, P.D., Ulrich, R.K.: Rev. Mod. Phys.54, 767 (1982)
Bahcall, J.N., Cleveland, B.T., Davis, R., Rowley, J.K.: Astrophys. J.292, L 79 (1985)
Parker, P.D.: Physics of the sun. Sturrock, P.A. (ed.), p. 15. Dordrecht: Reidel 1985
Parker, P.D., Kavanagh, R.W.: Phys. Rev.131, 2578 (1963)
Tombrello, T.A., Parker, P.D.: Phys. Rev.131, 2582 (1963)
Nagatani, K., Dwarakanath, M.R., Ashery, D.: Nucl. Phys. A128, 325 (1969)
Kavanagh, R.W.: Essays in nuclear astrophysics. Barnes, C.A., Clayton, D.D., Schramm, D.N. (eds.), p. 159. Cambridge: Cambridge University Press 1982
Kräwinkel, H., Becker, H.W., Buchmann, L., Görres, J., Kettner, K.U., Kieser, W.E., Santo, R., Schmalbrock, P., Trautvetter, H.P., Vlieks, A., Rolfs, C., Hammer, J.W., Azuma, R.E., Rodney, W.S.: Z. Phys. A — Atoms and Nuclei304, 307 (1982)
Osborne, J.L., Barnes, C.A., Kavanagh, R.W., Kremer, R.M., Mathews, G.J., Zyskind, J.L., Parker, P.D., Howard, A.J.: Phys. Rev. Lett.48, 1664 (1982); Nucl. Phys. A419, 115 (1984)
Robertson, R.G.H., Dyer, P., Bowles, T.J., Brown, R.E., Jarmie, N., Maggiore, C.J., Austin, S.M.: Phys. REv. C27, 11 (1983)
Volk, H., Kräwinkel, H., Santo, R., Wallek, L.: Z. Phys. A — Atoms and Nuclei310, 91 (1983)
Alexander, T.K., Ball, G.C., Lennard, W.N., Geissel, H., Mak, H.B.: Nucl. Phys. A427, 526 (1984)
Becker, H.W., Buchmann, L., Görres, J., Kettner, K.U., Kräwinkel, H., Rolfs, C., Schmalbrock, P., Trautvetter, H.P., Vlieks, A.: Nucl. Instrum. Methods198, 277 (1982)
Redder, A., Becker, H.W., Lorenz-Wirzba, H., Rolfs, C., Schmalbrock, P., Trautvetter, H.P.: Z. Phys. A — Atoms and Nuclei305, 325 (1982)
Krauss, A., Becker, H.W., Trautvetter, H.P., Rolfs, C., Brand, K.: Nucl. Phys. A465, 150 (1987)
Krauss, A., Becker, H.W., Trautvetter, H.P., Rolfs, C.: Nucl. Phys. A467, 273 (1987)
Hilgemeier, M.: Thesis, Universität Münster (1987); Trautvetter, H.P.: Habilitationsschrift, Universität Münster (1984)
Freye, T., Lorenz-Wirzba, H., Cleff, B., Trautvetter, H.P., Rolfs, C.: Z. Phys. A281, 211 (1977)
Görres, J., Becker, H.W., Krauss, A., Redder, A., Rolfs, C., Trautvetter, H.P.: Nucl. Instrum. Methods A241, 334 (1985)
Kraus, L., Linck, I.: Nucl. Phys. A224, 45 (1974)
Vlieks, A., Hilgemeier, M., Rolfs, C.: Nucl. Instrum. Methods213, 291 (1983)
Heydenburg, N.P., Temmer, G.M.: Phys. Rev.104, 123 (1956)
Benn, J., Dally, E.B., Müller, H.H., Pixley, R.E., Staub, H.H., Winkler, H.: Nucl. Phys. A106, 296 (1968)
Rolfs, C., Azuma, R.E.: Nucl. Phys. A227, 291 (1974)
Andersen, H.H., Ziegler, J.F.: Hydrogen stopping powers and ranges in all elements. New York: Pergamon Press 1977; Ziegler, J.F.: Helium stopping powers and ranges in all elemental matter. New York: Pergamon Press 1977
Ajzenberg-Selove, F.: Nucl. Phys. A449, 1 (1986)
Wapstra, A.H., Audi, G.: Nucl. Phys. A432, 1, 55 (1985)
Hammer, J.W., Fischer, B., Hollick, H., Trautvetter, H.P., Kettner, K.U., Rolfs, C., Wiescher, M.: Nucl. Instrum. Methods161, 189 (1979)
Rolfs, C., Görres, J., Kettner, K.U., Lorenz-Wirzba, H., Schmal-brock, P., Trautvetter, H.P., Verhoeven, W.: Nucl. Instrum. Methods157, 19 (1978)
Görres, J., Kettner, K.U., Kräwinkel, H., Rolfs, C.: Nucl. Instrum. Methods177, 295 (1980)
Endt, P.M., Van der Leun, C.: Nucl. Phys. A310, 1 (1978)
Ajzenberg-Selove, F.: Nucl. Phys. A413, 1 (1984)
Skelton, R.T., Kavanagh, R.W.: Nucl. Phys. A414, 141 (1984)
Szabo, J., Csikai, J., Varnagy, M.: Nucl. Phys. A195, 527 (1972)
Cronin, J.W.: Phys. Rev.101, 298 (1956)
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Supported in part by the Deutsche Forschungsgemeinschaft (Ro429/15-2)
The authors would like to thank K. Brehm, H. Ebbing, S. Engstler, G. Ganteför, A. Gardberg, U. Giesen, J. Görres, V. Harms, U. Heinemann, M. Köster, A. Krauss, R. Plaga, A. Redder, S. Schmidt, U. Schröder, S. Seuthe, R. Timmermann, K. Wolke and S. Wüstenbecker for useful discussions as well as for assistance during the course of the experiments. Fruitful comments on the manuscript by Prof. C.A. Barnes (Caltech) are highly appreciated.