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7. The effect of microwave heating on vitamins B1 and E, and linoleic and linolenic acids, and immunoglobulins in human milk

Author

Ovesen, L., Jakobsen, J., Leth, T., and Reinholdt, J.

Subjects
Breast milk -- Analysis, Microwave heating -- Influence, Vitamins -- Analysis, Unsaturated fatty acids -- Analysis, Immunoglobulins -- Analysis, Food/cooking/nutrition
Abstract

Microwave heating of human milk below 60 degree centigrade has little effect on the immunoglobulins, vitamins B1 and E, and linoleic and linolenic acids. While heating the milk at 77 degree centigrade results in total inactivation of immunoglobulin, components of vitamins and polyunsaturated fatty acids remain unaffected even at higher temperatures. Microwave heating and conventional heating with various power levels, and thawing have similar effects on immunoglobulins and nutrients.

Published
1996

8. Halo excitations in fragmentation of [formula omitted]He at 240 MeV/u on carbon and lead targets

Author

Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., Borge, M.J.G., Chulkov, L.V., Cub, J., Dostal, W., Eberlein, B., Elze, Th.W., Emling, H., Geissel, H., Goldberg, V.Z., Grünschloß, A., Hellström, M, Holeczek, J., Holzmann, R., Jonson, B., Kratz, J.V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Markenroth, K., Meister, M., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Pribora, V., Richter, A., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M.H., Stroth, J., Surowiec, A., Tengblad, O., and Zhukov, M.V.

Published
2000
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11. Halo excitations in fragmentation of 6He at 240 MeV/u on carbon and lead

Author

Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., Borge, M.J.G., Chulkov, L.V., Cub, J., Dostal, W., Eberlein, B., Elze, Th.W., Emling, H., Geissel, H., Goldberg, V.Z., Grunschloss, A., Hellstrom, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J.V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Markenroth, K., Meister, M., Mukha, I., Munzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfutzner, M., Pribora, V., Richter, A., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M.H., Stroth, J., Surowiec, A., Tengblad, O., and Zhukov, M.V.

Published
2000

12. Continuum excitations in He-6

Author

Aumann, T., Aleksandrov, D., Axelsson, L., Baumann, T., García Borge, María José, Chulkov, L. V., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Goldberg, V. Z., Golovkov, M., Grünschloß, A., Hellström, M., Hencken, K., Holeczek, J., Holzmann, R., Jonson, B., Korshenninikov, A. A., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M. H., Steiner, M., Stroth, J., Surowiec, A., Suzuki, T., Tengblad, Olof, and Zhukov, M. V.

Subjects
6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges], [PACS] Coulomb excitation, [PACS] Neutron spectroscopy, [PACS] Properties of specific nuclei listed by mass ranges:6 ≤ A ≤ 19, [PACS] Breakup and momentum distributions
Abstract

11 pages, 2 tables, 6 figures.-- PACS nrs.: 27.20.+n; 25.60.Gc; 25.70.De; 29.30.Hs., The three-body breakup He-6 --> He-4 + n + n is studied experimentally, using a secondary He-6 ion beam of 240 MeV/nucleon incident on carbon and lead targets. integrated cross sections for one- and two-neutron knockout and differential cross sections dσ/dE* and dσ/dΘ for inelastic nuclear or electromagnetic excitations into the He-6 continuum are presented. The E1-strength distribution is deduced from electromagnetic cross sections and is found to exhaust (10 ± 2)% of the energy-weighted Thomas-Reichr-Kuhn sum rule or (40 ± 8)% of the cluster sum rule for excitation energies below 5 MeV. Both the energy-weighted and non-energy-weighted dipole cluster sum rules are almost exhausted integrating the strength up to 10 MeV, a fact from which the root-mean-square distance between the a core and the two valence neutrons of r(α-2n) = (3.36 ± 0.39) fm is derived. The known I(π) = 2(+) (1.80 MeV) resonance in He-6 is observed in nuclear inelastic scattering; model-dependent values of the quadrupole deformation parameter δ(2) = (1.7 ± 0.3) fm or B (E2,0(+) --> 2(+)) = (3.2 ± 0.6)e(2) fm(4) are derived. No clear signature could be obtained for predicted higher-lying 2(+) resonances, but low-lying continuum strength of multipolarity other than dipole, likely of monopole and quadrupole multipolarity, is indicated by the data. Two-body correlations in the decaying He-4 + n + n system are investigated. The astrophysical relevance of the data with regard to the two-neutron capture process He-4(2n, γ) He-6 is briefly discussed., This work was supported by the German Federal Minister for Education and Research (BMBF) under Contracts No. 06 DA 820, 06 OF 474 and 06 MZ 864 and by GSI via Hochschulzusammenarbeitsvereinbarungen under Contracts No. DARIK, No. OF ELK, MZ KRK and partly supported by the Polish Committee of Scientific Research under Contract No. PB2/P03B/113/09, EC under Contract No. ERBCHGECT92-0003, and the Spanish CICYT under Contract No. AEN92-0788-C02-02 (M.J.G.B.), and by Deutsche Forschungsgemeinschaft (DFG) under Contract No. 436 RUS 130/127/1. One of us (B.J.) acknowledges support through an Alexander von Humboldt Senior Research Scientist Award.

Published
1999

13. Direct experimental evidence for strong admixture of different parity states in 11Li

Author

Simon, H., Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., Borge, M.J.G., Chulkov, L.V., Collatz, R., Cub, J., Dostal, W., Eberlein, B., Elze, Th.W., Emling, H., Geissel, H., Grünschloss, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J.V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, Pfützner, M., Richter, A., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Smedberg, H.M., Stroth, J., Surowiec, A., Tengblad, O., and Zhukov, M.V.

Published
1999

14. Continuum excitations in $^{6}He$

Author

Aumann, T., Aleksandrov, D., Axelsson, L., Baumann, T., Borge, M. J. G., Chulkov, L. V., Cub, J., Dostal, W., Eberlein, B., Elze, Th W., Emling, H., Geissel, H., Goldberg, V. Z., Golovkov, M., Grünschloß, A., Hellström, M., Hencken, K., Holeczek, J., Holzmann, R., Jonson, B., Korshenninikov, A. A., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Ivan Mukha, Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Richter, A., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M. H., Steiner, M., Stroth, J., Surowiec, A., Suzuki, T., Tengblad, O., and Zhukov, M. V.

Subjects
Nuclear Physics
Published
1999

15. Survey of the beta-strength of the halo nucleus $^{11}$Li

Author

Mukha, I., Borge, M.J.G., Guillemaud-Mueller, D., Hornshoj, P., Jonson, B., Fynbo, H., Leth, T., Nilsson, T., Nyman, G., Riisager, K., Schrieder, G., Smedberg, M.H., Tengblad, O., Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Sherrill B.M. Morrissey D.J. Davids C.N.

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1998

16. Trans fatty acids in foods in Europe : the TRANSFAIR study

Author

Poppel, G. van, Erp-Baart, M-A. van, Leth, T., Amelsvoort, J. van, Lanzmann-Petithory, D., Kafatos, A., Aro, A., and Centraal Instituut voor Voedingsonderzoek TNO

Subjects
Chemistry
Abstract

One of the aims of the TRANSFAIR study is to provide reliable and comparable data ontransfatty acid (TFA) content of foods in Europe. We performed a market basket study in 14 European countries. In each country, a maximum of 100 food samples representative of the total fat intake were sampled according to a standardized stepwise approach. Samples were analyzed for fat content and fatty acid composition in one central laboratory. This paper describes the design of the market basket study and the analytical methods. Detailed results of separate food groups are presented in the following four separate papers. The current health concern on TFA seems to have resulted in a number of consumer products like soft margarines that are low in TFA. On the other hand, shortenings, frying fats, and convenience foods are frequently high in TFA. There may not be a health benefit if a reduction in TFA is achieved by a similar increase in saturated fatty acid. Moreover, health implications are dependent on overall consumption patterns and these will be studied in the second part of the TRANSFAIR study. © 1998 Academic Press.

Published
1998

18. Invariant mass spectrum and $\alpha$-n correlation function studied in the fragmentation of $^{6}He$ on a carbon target

Author

Aleksandrov, D V, Aumann, T, Axelsson, L, Baumann, T, García-Borge, M J, Chulkov, L V, Cub, J, Dostal, W, Eberlein, B, Elze, T W, Emling, H, Geissel, H, Goldberg, V Z, Golovkov, M S, Grünschloss, A, Hellström, M, Holeczek, J, Holzmann, R, Jonson, B, Korsheninnikov, A A, Kratz, J V, Kraus, G, Kulessa, R, Leifels, Y, Leistenschneider, A, Leth, T E, Mukha, I, Münzenberg, G, Nickel, F, Nilsson, T, Nyman, G H, Petersen, B, Pfützner, M, Richter, A, Riisager, K, Scheidenberger, C, Schrieder, G, Schwab, W, Simon, H, Smedberg, M H, Steiner, M, Stroth, J, Surowiec, A, Suzuki, T, Tengblad, O, and Zhukov, M V

Subjects
Nuclear Physics
Published
1997

19. Large spin alignment of the unbound $^{5}He$ fragment after fragmentation of 240 MeV/u $^{6}He$

Author

Chulkov, L V, Aumann, T, Aleksandrov, D V, Axelsson, L, Baumann, T, García-Borge, M J, Collatz, R, Cub, J, Dostal, W, Eberlein, B, Elze, T W, Emling, H, Geissel, H, Goldberg, V Z, Golovkov, M S, Grünschloss, A, Hellström, M, Holeczek, J, Holzmann, R, Jonson, B, Korsheninnikov, A A, Kratz, J V, Kraus, G, Kulessa, R, Leifels, Y, Leistenschneider, A, Leth, T E, Mukha, I, Münzenberg, G, Nickel, F, Nilsson, T, Nyman, G H, Petersen, B, Pfützner, M, Richter, A, Riisager, K, Scheidenberger, C, Schrieder, G, Schwab, W, Simon, H, Smedberg, M H, Steiner, M, Stroth, J, Surowiec, A, Suzuki, T, and Tengblad, O

Subjects
Nuclear Physics
Published
1997

20. Elucidating halo structure by β decay: βγ from the Li-11 decay

Author

García Borge, María José, Fynbo, H., Guillemaud-Mueller, D., Hornshøj, P., Humbert, F., Jonson, B., Leth, T. E., Martínez Pinedo, Gabriel, Nilsson, T., Nyman, G., Poves, Alfredo, Ramos-Lerate, I., Riisager, K., Schrieder, G., Smedberg, M., and Tengblad, Olof

Subjects
[PACS] Shell model, [PACS] γ transitions and level energies, [PACS] Single-particle levels and strength functions, [PACS] Relation with nuclear matrix elements and nuclear structure
Abstract

4 pages, 2 tables, 1 figure.-- PACS nrs.: 23.40.Hc, 21.10.Pc, 21.60.Cs, 23.20.Lv., New values for the γ ray intensities following the β decay of Li-11 are presented. Special emphasis is put on the determination of the Gamow-Teller transition Li-11 --> Be-11 (1/2(-), 320 keV) to the only bound excited state in Be-11. We show that a shell-model calculation can simultaneously reproduce the half-life of Li-11 and the newly measured branching ratio to the 1/2(-) state provided the Li-11 ground state wave function contains about 50% of s-wave neutron components., Financial support for this study from the Spanish CICyT (Contract AEN94-0833-C02-02) and DGICyT (Contract PB93-263) and Bundesministerium für Forschung und Technologie (contract No. 06DA665I) is gratefully acknowledged.

Published
1997

21. Large spin alignment of the unbound He-5 fragment after fragmentation of 240 MeV/nucleon He-6

Author

Chulkov, L. V., Aumann, T., Aleksandrov, D., Axelsson, L., Baumann, T., García Borge, María José, Collatz, R., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Goldberg, V. Z., Golovkov, M., Grünschloß, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Korshenninikov, A. A., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M. H., Steiner, M., Stroth, J., Surowiec, A., Suzuki, T., and Tengblad, Olof

Subjects
[PACS] Polarization phenomena in reactions, A ≤ 5 [[PACS] Properties of specific nuclei listed by mass ranges], [PACS] Properties of specific nuclei listed by mass ranges: A ≤ 5, [PACS] Breakup and momentum distributions
Abstract

4 pages, 2 figures.-- PACS nrs.: 25.60.Gc, 24.70.+s, 27.10.+h., Peripheral fragmentation of a 240 MeV/nucleon beam of the halo nucleus He-6 incident on carbon target has been studied in a kinematically complete experiment. It is found that one-neutron stripping to the unbound nucleus He-5 is the dominant fragmentation mechanism and that it leads to a spin alignment of He-5 in a plane perpendicular to the He-5 momentum vector. This is expected to be a common feature for all neutron halo nuclei., This work was supported by the BMBF under Contracts No. 06 DA 665 I, No. 06 OF 112, and No. 06 MZ 465 and by GSI via Hochschulzusammenarbeitsvereinbarungen under Contracts No. DA RICK, No. OF ELZ, and No. MZ KRK, as well as partly supported by the Polish Committee of Scientific Research under Contract No. PBZyPB03y113y09, EC under Contract No. ERBCHGE-CT92-0003, and CICYT under Contract No. AEN92-0788-C02-02 (MJGB).

Published
1997

22. Observation of the $^{11}$Li($\beta$d) decay

Author

Mukha, I, García-Borge, M J, Guillemaud-Müller, D, Hornshøj, P, Humbert, F, Jonson, B, Leth, T E, Martínez-Pinedo, G, Nilsson, T, Nyman, G H, Riisager, K, Schrieder, G, Smedberg, M H, Tengblad, O, Wilhelmsen-Rolander, K, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and ISOLDE

Subjects
Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1996

29. Halo excitations in fragmentation of He-6 at 240 MeV/u on carbon and lead targets

Author

Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., García Borge, María José, Chulkov, L. V., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Goldberg, V. Z., Grünschloß, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Markenroth, K., Meister, M., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Pribora, V., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M. H., Stroth, J., Surowiec, A., Tengblad, Olof, Zhukov, M. V., Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., García Borge, María José, Chulkov, L. V., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Goldberg, V. Z., Grünschloß, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Markenroth, K., Meister, M., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Pribora, V., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M. H., Stroth, J., Surowiec, A., Tengblad, Olof, and Zhukov, M. V.

Abstract

Dissociation of a 240 MeV/u beam of He-6, incident on carbon and lead targets, has been studied in kinematically complete experiments to investigate low-lying excitation modes in the halo nucleus He-6. It is shown that alignment effects characterize the inelastic scattering and allow an unambiguous assignment of the spin of a narrow resonance observed in the excitation energy spectrum. The differential cross sections for the He-6 inelastic scattering on carbon and lead targets were deduced from the measured moments of the two neutrons and the a-particle. An analysis of these distributions shows that quadrupole and, possibly, monopole excitations characterize the hadronic interaction, while the dipole mode is dominating in Coulomb dissociation. Neither theoretically predicted new resonance states in He-6 nor nuclear excitation of a dipole mode were found. Direct evidence has been obtained for strong suppression of Coulornb post-acceleration in direct Coulomb breakup in a lead target.

Published
2000

32. Direct experimental evidence for strong admixture of different parity states in Li-11

Author

Simon, H., Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., García Borge, María José, Chulkov, L. V., Collatz, R., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Grünschloß, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Smedberg, M. H., Stroth, J., Surowiec, A., Tengblad, Olof, Zhukov, M. V., Simon, H., Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., García Borge, María José, Chulkov, L. V., Collatz, R., Cub, J., Dostal, W., Eberlein, B., Elze, Th. W., Emling, H., Geissel, H., Grünschloß, A., Hellström, M., Holeczek, J., Holzmann, R., Jonson, B., Kratz, J. V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Richter, Achim W., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Smedberg, M. H., Stroth, J., Surowiec, A., Tengblad, Olof, and Zhukov, M. V.

Abstract

Peripheral fragmentation of a 287 MeV/nucleon beam of the halo nucleus Li-11 incident on a carbon target has been studied in a fragment-neutron coincidence experiment. The momentum distribution of the Li-10 fragments gives access to the momentum distribution of the removed neutron in Li-11. From the shape of the distribution, the (1s(1/2))(2) contribution to the mixture of (1s(1/2))(2) and (0p(1/2))(2) components in the ground-state wave function was determined to he (45 ± 10)%. The angular correlation between the knocked out neutron and the one from the decay of Li-10 shows a skew distribution signaling interference of these two different parity states.

Published
1999

33. Sorter af væksthustomat

Author

Willumsen, J., Rasmussen, K., Kaack, K., Leth, T., and Okholm-Hansen, B.

Published
1990

35. Halo excitations in fragmentation of He at 240 MeV/u on carbon and lead targets

Author

Aleksandrov, D., primary, Aumann, T., additional, Axelsson, L., additional, Baumann, T., additional, Borge, M.J.G., additional, Chulkov, L.V., additional, Cub, J., additional, Dostal, W., additional, Eberlein, B., additional, Elze, Th.W., additional, Emling, H., additional, Geissel, H., additional, Goldberg, V.Z., additional, Grünschloß, A., additional, Hellström, M, additional, Holeczek, J., additional, Holzmann, R., additional, Jonson, B., additional, Kratz, J.V., additional, Kraus, G., additional, Kulessa, R., additional, Leifels, Y., additional, Leistenschneider, A., additional, Leth, T., additional, Markenroth, K., additional, Meister, M., additional, Mukha, I., additional, Münzenberg, G., additional, Nickel, F., additional, Nilsson, T., additional, Nyman, G., additional, Petersen, B., additional, Pfützner, M., additional, Pribora, V., additional, Richter, A., additional, Riisager, K., additional, Scheidenberger, C., additional, Schrieder, G., additional, Schwab, W., additional, Simon, H., additional, Smedberg, M.H., additional, Stroth, J., additional, Surowiec, A., additional, Tengblad, O., additional, and Zhukov, M.V., additional

Published
2000
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36. Direct Experimental Evidence for Strong Admixture of Different Parity States in11Li

Author

Simon, H., primary, Aleksandrov, D., additional, Aumann, T., additional, Axelsson, L., additional, Baumann, T., additional, Borge, M. J. G., additional, Chulkov, L. V., additional, Collatz, R., additional, Cub, J., additional, Dostal, W., additional, Eberlein, B., additional, Elze, Th. W., additional, Emling, H., additional, Geissel, H., additional, Grünschloss, A., additional, Hellström, M., additional, Holeczek, J., additional, Holzmann, R., additional, Jonson, B., additional, Kratz, J. V., additional, Kraus, G., additional, Kulessa, R., additional, Leifels, Y., additional, Leistenschneider, A., additional, Leth, T., additional, Mukha, I., additional, Münzenberg, G., additional, Nickel, F., additional, Nilsson, T., additional, Nyman, G., additional, Petersen, B., additional, Pfützner, M., additional, Richter, A., additional, Riisager, K., additional, Scheidenberger, C., additional, Schrieder, G., additional, Schwab, W., additional, Smedberg, M. H., additional, Stroth, J., additional, Surowiec, A., additional, Tengblad, O., additional, and Zhukov, M. V., additional

Published
1999
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37. Continuum excitations in6He

Author

Aumann, T., primary, Aleksandrov, D., additional, Axelsson, L., additional, Baumann, T., additional, Borge, M. J. G., additional, Chulkov, L. V., additional, Cub, J., additional, Dostal, W., additional, Eberlein, B., additional, Elze, Th. W., additional, Emling, H., additional, Geissel, H., additional, Goldberg, V. Z., additional, Golovkov, M., additional, Grünschloß, A., additional, Hellström, M., additional, Hencken, K., additional, Holeczek, J., additional, Holzmann, R., additional, Jonson, B., additional, Korshenninikov, A. A., additional, Kratz, J. V., additional, Kraus, G., additional, Kulessa, R., additional, Leifels, Y., additional, Leistenschneider, A., additional, Leth, T., additional, Mukha, I., additional, Münzenberg, G., additional, Nickel, F., additional, Nilsson, T., additional, Nyman, G., additional, Petersen, B., additional, Pfützner, M., additional, Richter, A., additional, Riisager, K., additional, Scheidenberger, C., additional, Schrieder, G., additional, Schwab, W., additional, Simon, H., additional, Smedberg, M. H., additional, Steiner, M., additional, Stroth, J., additional, Surowiec, A., additional, Suzuki, T., additional, Tengblad, O., additional, and Zhukov, M. V., additional

Published
1999
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40. Invariant mass spectrum and α-n correlation function studied in the fragmentation of 6He on a carbon target

Author

Aleksandrov, D., primary, Aumann, T., additional, Axelsson, L., additional, Baumann, T., additional, Borge, M.J.G., additional, Chulkov, L.V., additional, Cub, J., additional, Dostal, W., additional, Eberlein, B., additional, Elze, Th.W., additional, Emling, H., additional, Geissel, H., additional, Goldberg, V.Z., additional, Golovkov, M., additional, Grünschloß, A., additional, Hellström, M., additional, Holeczek, J., additional, Holzmann, R., additional, Jonson, B., additional, Korshenninikov, A.A., additional, Kratz, J.V., additional, Kraus, G., additional, Kulessa, R., additional, Leifels, Y., additional, Leistenschneider, A., additional, Leth, T., additional, Mukha, I., additional, Münzenberg, G., additional, Nickel, F., additional, Nilsson, T., additional, Nyman, G., additional, petersen, B., additional, Pfützner, M., additional, Richter, A., additional, Riisager, K., additional, Scheidenberger, C., additional, Schrieder, G., additional, Schwab, W., additional, Simon, H., additional, Smedberg, M.H., additional, Steiner, M., additional, Stroth, J., additional, Surowiec, A., additional, Suzuki, T., additional, Tengblad, O., additional, and Zhukov, M.V., additional

Published
1998
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41. Survey of the beta-strength of the halo nucleus

Author

Mukha, I., primary, Borge, M. J. G., additional, Guillemaud-Mueller, D., additional, Hornsho̸j, P., additional, Jonson, B., additional, Fynbo, H., additional, Leth, T., additional, Nilsson, T., additional, Nyman, G., additional, Riisager, K., additional, Schrieder, G., additional, Smedberg, M. H., additional, and Tengblad, O., additional

Published
1998
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43. Large Spin Alignment of the Unbound5HeFragment after Fragmentation of 240 MeV/nucleon6He

Author

Chulkov, L. V., primary, Aumann, T., additional, Aleksandrov, D., additional, Axelsson, L., additional, Baumann, T., additional, Borge, M. J. G., additional, Collatz, R., additional, Cub, J., additional, Dostal, W., additional, Eberlein, B., additional, Elze, Th. W., additional, Emling, H., additional, Geissel, H., additional, Goldberg, V. Z., additional, Golovkov, M., additional, Grünschloss, A., additional, Hellström, M., additional, Holeczek, J., additional, Holzmann, R., additional, Jonson, B., additional, Korsheninnikov, A. A., additional, Kratz, J. V., additional, Kraus, G., additional, Kulessa, R., additional, Leifels, Y., additional, Leistenschneider, A., additional, Leth, T., additional, Mukha, I., additional, Münzenberg, G., additional, Nickel, F., additional, Nilsson, T., additional, Nyman, G., additional, Petersen, B., additional, Pfützner, M., additional, Richter, A., additional, Riisager, K., additional, Scheidenberger, C., additional, Schrieder, G., additional, Schwab, W., additional, Simon, H., additional, Smedberg, M. H., additional, Steiner, M., additional, Stroth, J., additional, Surowiec, A., additional, Suzuki, T., additional, and Tengblad, O., additional

Published
1997
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44. Elucidating halo structure byβdecay:βγfrom the11Li decay

Author

Borge, M. J. G., primary, Fynbo, H., additional, Guillemaud-Mueller, D., additional, Hornshøj, P., additional, Humbert, F., additional, Jonson, B., additional, Leth, T. E., additional, Martínez-Pinedo, G., additional, Nilsson, T., additional, Nyman, G., additional, Poves, A., additional, Ramos-Lerate, I., additional, Riisager, K., additional, Schrieder, G., additional, Smedberg, M., additional, and Tengblad, O., additional

Published
1997
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47. Halo excitations in fragmentation of 6He at 240 MeV/u on carbon and lead targets

Author

Aleksandrov, D., Aumann, T., Axelsson, L., Baumann, T., Borge, M.J.G., Chulkov, L.V., Cub, J., Dostal, W., Eberlein, B., Elze, Th.W., Emling, H., Geissel, H., Goldberg, V.Z., Grünschloß, A., Hellström, M, Holeczek, J., Holzmann, R., Jonson, B., Kratz, J.V., Kraus, G., Kulessa, R., Leifels, Y., Leistenschneider, A., Leth, T., Markenroth, K., Meister, M., Mukha, I., Münzenberg, G., Nickel, F., Nilsson, T., Nyman, G., Petersen, B., Pfützner, M., Pribora, V., Richter, A., Riisager, K., Scheidenberger, C., Schrieder, G., Schwab, W., Simon, H., Smedberg, M.H., Stroth, J., Surowiec, A., Tengblad, O., and Zhukov, M.V.

Abstract

Dissociation of a 240 MeV/u beam of 6He, incident on carbon and lead targets, has been studied in kinematically complete experiments to investigate low-lying excitation modes in the halo nucleus 6He. It is shown that alignment effects characterize the inelastic scattering and allow an unambiguous assignment of the spin of a narrow resonance observed in the excitation energy spectrum. The differential cross sections for the 6He inelastic scattering on carbon and lead targets were deduced from the measured momenta of the two neutrons and the α-particle. An analysis of these distributions shows that quadrupole and, possibly, monopole excitations characterize the hadronic interaction, while the dipole mode is dominating in Coulomb dissociation. Neither theoretically predicted new resonance states in 6He nor nuclear excitation of a dipole mode were found. Direct evidence has been obtained for strong suppression of Coulomb post-acceleration in direct Coulomb breakup in a lead target.

Published
2000
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