Abstract
Neutron transmission cross sections of lead and bismuth were measured for 143 keV and with high precision for 1970 eV neutrons which were selected from the reactor neutron spectrum by means of a novel dual combination of resonance scatterers. These data and highly accurate values of the coherent scattering lengths at zero energy and of transmission cross sections at 1.26, 5.19, 18.8 and 132 eV were the basis to determine the potential scattering radii, the neutron electron and the electric polarization scattering lengths as well as to test the used resonance corrections by which the influence of nuclear reactions on the results is eliminated. We obtained for the electric polarizability of the neutron:α n=(0.8±1.0) 10−3 fm3 and for the neutron electron scattering length:b ne=(−1.32±0.04) 10−3 fm. In conclusion we have shown that these results favour the cloudy bag model for the description of the neutron's charge structure.
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Kanazava, Akira: Nucl. Phys.24, 524 (1960)
Breit, G., Rustgi, M.L.: Phys. Rev.114, 380 (1959)
Bernabeu, J., Ericson, T.E.O.: Phys. Lett.42B, 93 (1972)
Schröder, U.E.: Nucl. Phys. B166, 103 (1980)
Thaler, R.M.: Phys. Rev.114, 827 (1959)
Anikin, G.V., Kotukhov, I.I.: Sov. J. Nucl. Phys.12, 614 (1971)
Samosvat, G.S.: J. Phys. (Paris)45, Coll. c3, 51 (1984)
Havens, W.W. Jr., Rabi, I.I., Rainwater, L.J.: Phys. Rev.72, 634 (1947)
Melkonian, E., Rustad, B.M., Havens, W.W. Jr.: Phys. Rev.114, 1571 (1959)
Koester, L., Nistler, W., Waschkowski, W.: Phys. Rev. Lett.36, 1021 (1976)
Aleksandrov, Yu.A.: Sov. J. Nucl. Phys.37, 149 (1983);38, 1100 (1983)
Koester, L., Waschkowski, W., Klüver, A.: Physica137B, 282 (1986)
Aleksandrov, Yu.A., Vrana, M., Manrike, Garcia, J., Machekina, T.A., Sedlakova, L.N.: Sov. J. Nucl. Phys.44, 900 (1986)
Reiner, W., Weise, W.: Verh. Deutsch. Phys. Ges.20, 370 (1985)
Binder, K.: Berichte der Reaktorstation Garching PTHM-FRM-101, April 1970, Technische Universität München, 1970
Sears, V.F.: Phys. Rep.141, 281–317 (1986)
Nagy, Bela v. Sz.: Z. Phys.91, 905 (1934)
Mughabghab, S.F.: Neutron cross sections. Vol. 1, B. New York: Academic Press 1984
Glättli, E.: In: Neutron scattering, Methods of experimental physics. Sköld, K., Price, D.L. (eds.), Vol. 23C. New York: Academic Press 1987
Scherm, R.: Nukleonik12, 4 (1968)
Placzek, G.: Phys. Rev.86, 377 (1952)
Placzek, G., Nyboer, B.R.A., van Hove, L.: Phys. Rev.82, 392 (1951)
Koester, L., Waschkowski, W., Meier, J.: (to be published) (1988)
Koester, L., Waschkowski, W., Meier, J.: Z. Phys. A — Atomic Nuclei326, 185 (1987)
Krohn, V.E., Ringo, G.R.: Phys. Rev. D8, 1305 (1973)
Carlitz, R.D., Ellis, S.D., Savit, R.: Phys. Letters68B, 443 (1977)
De Tar, C.E.: Phys. Rev. D24, 762 (1981)
Thomas, A.W.: Advances in nuclear physics. In: Negele, J.W., Vogt, E. (eds.), Vol. 13, p. 1–137. New York: Plenum Press 1984
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Work partially supported by the Bundesministerium für Forschung und Technologie
The continous assistance by the reactor staff and the support of the “Bundesministerium für Forschung und Technologie” are appreciated. We thank Dr. Gert Rau, FRM, for valuable discussions.
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Koester, L., Waschkowski, W. & Meier, J. Experimental study on the electric polarizability of the neutron. Z. Physik A - Atomic Nuclei 329, 229–234 (1988). https://doi.org/10.1007/BF01283779
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DOI: https://doi.org/10.1007/BF01283779