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13 results on '"P. Gomez del Campo"'

3. Coulomb excitation and transfer reactions with neutron-rich radioactive beams

Author

Radford, D. C., Baktash, C., Barton, C. J., Batchelder, J., Beene, J. R., Bingham, C. R., Caprio, M. A., Danchev, M., Fuentes, B., Galindo-Uribarri, A., Gomez del Campo, J., Gross, C. J., Halbert, M. L., Hartley, D. J., Hausladen, P., Hwang, J. K., Krolas, W., Larochelle, Y., Liang, J. F., Mueller, P. E., Padilla, E., Pavan, J., Piechaczek, A., Shapira, D., Stracener, D. W., Varner, R. L., Woehr, A., Yu, C. -H., and Zamfir, N. V.

Published
2005
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8. Sub-barrier fusion induced by neutron-rich radioactive 132Sn

Author

Liang, J. F., Shapira, D., Gross, C. J., Varner, R. L., Amro, H., Beene, J. R., Bierman, J. D., Caraley, A. L., Galindo-Uribarri, A., Gomez del Campo, J., Hausladen, P. A., Jones, K. L., Kolata, J. J., Larochelle, Y., Loveland, W., Mueller, P. E., Peterson, D., Radford, D. C., and Stracener, D. W.

Published
2005
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9. Coulomb excitation measurements of transition strengths in the isotopes 132,134Sn.

Author

Gross, Carl J., Nazarewicz, Witold, Rykaczewski, Krzysztof P., Varner, R. L., Beene, J. R., Baktash, C., Galindo-Uribarri, A., Gross, C. J., Gomez del Campo, J., Halbert, M. L., Hausladen, P. A., Larochelle, Y., Liang, J. F., Mas, J., Mueller, P. E., Padilla-Rodal, E., Radford, D. C., Shapira, D., Stracener, D. W., and Urrego-Blanco, J. -P.

Abstract

We describe an experiment optimized to determine the transition probabilities for excitation of the first excited 2+ state in 132Sn. The large excitation energy (4.04 MeV) and consequent small excitation cross-section, together with the modest beam intensity available makes this a challenging experiment. The preliminary result is B(E2; 0+ → 2+) = 0.11 ± 0.03e2b2. The high efficiency and generalized nature of the setup enabled us to also measure the first 2+ state in the two-neutron nucleus 134Sn. We have determined a value of B(E2; 0+ → 2+) = 0.029 ± 0.005e2b2 which shows no sign of the asymmetry with respect to the N = 82 shell closure exhibited by the Te isotopes. [ABSTRACT FROM AUTHOR]

Published
2005
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10. Coulomb excitation and transfer reactions with neutron-rich radioactive beams.

Author

Gross, Carl J., Nazarewicz, Witold, Rykaczewski, Krzysztof P., Radford, D. C., Baktash, C., Barton, C. J., Batchelder, J., Beene, J. R., Bingham, C. R., Caprio, M. A., Danchev, M., Fuentes, B., Galindo-Uribarri, A., Gomez del Campo, J., Gross, C. J., Halbert, M. L., Hartley, D. J., Hausladen, P., Hwang, J. K., and Krolas, W.

Abstract

Neutron-rich radioactive ion beams available from the HRIBF allow a variety of measurements around the 132Sn region, including Coulomb excitation and single-nucleon transfer. The B(E2; 0+ → 2+) values for first 2+ excited states of even-even neutron-rich 132-136Te and {au126-130}Sn have been measured by Coulomb excitation in inverse kinematics. Neutron transfer onto a 134Te beam from 9Be and 13C targets, to populate single-particle states in 135Te, has also been studied. Gamma rays from the 13C(134Te, 12C) reaction were used to identify the vi13/2 state in 135Te, at an energy of 2109 keV. These and other results, and plans for future experiments with these neutron-rich beams, are presented. [ABSTRACT FROM AUTHOR]

Published
2005
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11. Measurement of evaporation residue cross sections from reactions with radioactive neutron-rich beams.

Author

Gross, Carl J., Nazarewicz, Witold, Rykaczewski, Krzysztof P., Shapira, D., Liang, J. F., Gross, C. J., Varner, R. L., Beene, J. R., Galindo-Uribarri, A., Gomez Del Campo, J., Mueller, P. E., Stracener, D. W., Hausladen, P. A., Harlin, C., Kolata, J. J., Amro, H., Loveland, W., Jones, K. L., Bierman, J. D., and Caraley, A. L.

Abstract

Evaporation residue cross sections for 132Sn, 134Te and 124Sn with 64Ni were measured. A compact system to measure these cross sections to values as low as 1 mb is described and a sample of data acquired with this system is shown. [ABSTRACT FROM AUTHOR]

Published
2005
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12. Sub-barrier fusion induced by neutron-rich radioactive 132Sn.

Author

Gross, Carl J., Nazarewicz, Witold, Rykaczewski, Krzysztof P., Liang, J. F., Shapira, D., Gross, C. J., Varner, R. L., Amro, H., Beene, J. R., Bierman, J. D., Caraley, A. L., Galindo-Uribarri, A., Gomez del Campo, J., Hausladen, P. A., Jones, K. L., Kolata, J. J., Larochelle, Y., Loveland, W., Mueller, P. E., and Peterson, D.

Abstract

Evaporation residue cross-sections measured with short-lived 132Sn on 64Ni at energies near and below the Coulomb barrier were found to be enhanced as compared to those measured with stable Sn isotopes on 64Ni. Subsequent measurements of fission following fusion of 132Sn with 64Ni and extending the measurement of evaporation residues to higher energies were carried out. [ABSTRACT FROM AUTHOR]

Published
2005
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13. Measurements of fusion reactions induced by radioactive 132Sn on 64Ni

Author

Liang, J. F., Shapira, D., Gross, C. J., Varner, R. L., Amro, H., Beene, J. R., Bierman, J. D., Caraley, A. L., Galindo-Uribarri, A., Gomez del Campo, J., Hausladen, P. A., Jones, K. L., Kolata, J. J., Larochelle, Y., Loveland, W., Mueller, P. E., Peterson, D., Radford, D. C., and Stracener, D. W.

Abstract

Abstract.: Evaporation residue and fission cross sections of radioactive 132Sn on 64Ni were measured. Statistical model calculations using parameters simultaneously fitting stable Sn+64Ni data reproduce the 132Sn induced reaction very well. A large sub-barrier fusion enhancement was observed. The enhancement can be accounted for by coupled-channels calculations including inelastic excitation of the projectile and target, and neutron transfer.

Published
2007
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