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Your search keyword '"Ibbotson, R.W."' showing total 23 results
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23 results on '"Ibbotson, R.W."'

4. Direct evidence for the breakdown of the N=8 shell closure in $^{12}$Be

Author

Navin, A., Anthony, D.W., Aumann, T., Baumann, T., Bazin, Dominique, Blumenfeld, Y., Brown, B.A., Glasmacher, T., Hansen, P.G., Ibbotson, R.W., Lofy, P.A., Maddalena, V., Miller, K., Nakamura, T., Pritychenko, B.V., Sherrill, B.M., Spears, E., Steiner, M., Tostevin, J.A., Yurkon, J., Wagner, A., Robert, Suzanne, Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

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

Partial cross sections and corresponding momentum distributions have been studied in the: one-neutron knockout reaction (Be-12. Be-11 + gamma) on a Be-9 target at 78 MeV/nucleon. The resulting spectroscopic factors for the only two bound starts of Be-11 an 0.42 +/- 0.06 (1/2(+)) and 0.37 +/- 0.06 (1/2(-)), where the errors an experimental only. This result shows that N = 8 is not a good closed shell in the neutron-rich Be-12 and that the last neutron pair is two-thirds in the (1s(2) + 0d(2)) intruder configuration.

Published
2000

5. Inverse kinematics proton scattering on $^{18}$Ne and mirror symmetry in A=18 nuclei

Author

Riley, L.A., Jewell, J.K., Cottle, P.D., Glasmacher, T., Kemper, K.W., Alamanos, N., Blumenfeld, Y., Carr, J.A., Chromik, M.J., Ibbotson, R.W., Marechal, F., Ormand, W.E., Petrovich, F., Scheit, H., Suomijarvi, T., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

6. Proton scattering on the radioactive nucleus $^{20}$O and the 0$^+ _{gs}\rightarrow$ 2$^+ _1$ transition in the neutron-rich oxygen isotopes

Author

Jewell, J.K., Riley, L.A., Cottle, P.D., Kemper, K.W., Glasmacher, T., Ibbotson, R.W., Scheit, H., Chromik, M., Blumenfeld, Y., Hirzebruch, S.E., Marechal, F., Suomijarvi, T., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

7. Inelastic proton scattering on the radioactive nuclei $^{18}$Ne and $^{20}$O in inverse kinematics

Author

Cottle, P.D., Riley, L.A., Jewell, J.K., Glasmacher, T., Kemper, K.W., Blumenfeld, Y., Chromik, M., Hirzebruch, S.E., Ibbotson, R.W., Marechal, F., Morrissey, D.J., Scheit, H., Suomijarvi, T., Robert, Suzanne, Sherrill B.M. Morrissey D.J. Davids C.N., Institut de Physique Nucléaire d'Orsay (IPNO), and 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)

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

8. Nuclear reactions with radioactive, isomer beams: Coulomb excitation of 18Fg.s. and its Jπ=5+ isomer 18Fm using a large position-sensitive NaI array

Author

Zimmerman, J.A., primary, Becchetti, F.D., additional, Griffin, H.C., additional, Roberts, D.A., additional, Lee, M.Y., additional, O’Donnell, T.W., additional, Brown, J.A., additional, Ronningen, R.M., additional, Glasmacher, T., additional, Ibbotson, R.W., additional, Scheit, H., additional, Pritychenko, B., additional, Anthony, D.W., additional, Lofy, P.A., additional, and Steiner, M., additional

Published
2007
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9. Study of 34,35Si and 37S with single-neutron removal reactions

Author

Enders, J., primary, Anthony, D.W., additional, Aumann, T., additional, Bauer, A., additional, Baumann, T., additional, Bazin, D., additional, Blumenfeld, Y., additional, Brown, B.A., additional, Glasmacher, T., additional, Hansen, P.G., additional, Ibbotson, R.W., additional, Lofy, P.A., additional, Maddalena, V., additional, Miller, K.L., additional, Nakamura, T., additional, Navin, A., additional, Pritychenko, B.V., additional, Sherrill, B.M., additional, Spears, E.J., additional, Steiner, M., additional, Tostevin, J.A., additional, Wagner, A., additional, and Yurkon, J., additional

Published
2001
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10. One-nucleon knockout reactions: The test case 15C and the single-particle structure of 16,17,19C

Author

Maddalena, V., primary, Aumann, T., additional, Bazin, D., additional, Brown, B.A., additional, Caggiano, J.A., additional, Davids, B., additional, Glasmacher, T., additional, Hansen, P.G., additional, Ibbotson, R.W., additional, Navin, A., additional, Pritychenko, B.V., additional, Scheit, H., additional, Sherrill, B.M., additional, Steiner, M., additional, Tostevin, J.A., additional, and Yurkon, J., additional

Published
2001
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12. Intermediate-energy Coulomb excitation of 19Ne

Author

Hackman, G., primary, Austin, S.M., additional, Glasmacher, T., additional, Aumann, T., additional, Brown, B.A., additional, Ibbotson, R.W., additional, Miller, K., additional, Pritychenko, B., additional, Riley, L.A., additional, Roeder, B., additional, and Spears, E., additional

Published
2001
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15. Role of intruder configurations in Ne and Mg

Author

Pritychenko, B.V, primary, Glasmacher, T, additional, Cottle, P.D, additional, Fauerbach, M, additional, Ibbotson, R.W, additional, Kemper, K.W, additional, Maddalena, V, additional, Navin, A, additional, Ronningen, R, additional, Sakharuk, A, additional, Scheit, H, additional, and Zelevinsky, V.G, additional

Published
1999
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17. Quadrupole and octupole collectivity in 148Nd

Author

Ibbotson, R.W., primary, White, C.A., additional, Czosnyka, T., additional, Butler, P.A., additional, Clarkson, N., additional, Cline, D., additional, Cunningham, R.A., additional, Devlin, M., additional, Helmer, K.G., additional, Hoare, T.H., additional, Hughes, J.R., additional, Jones, G.D., additional, Kavka, A.E., additional, Kotlinski, B., additional, Poynter, R.J., additional, Regan, P.H., additional, Vogt, E.G., additional, Wadsworth, R., additional, Watson, D.L., additional, and Wu, C.Y., additional

Published
1997
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18. Collectivity in 44S

Author

Glasmacher, T., primary, Brown, B.A., additional, Chromik, M.J., additional, Cottle, P.D., additional, Fauerbach, M., additional, Ibbotson, R.W., additional, Kemper, K.W., additional, Morrissey, D.J., additional, Scheit, H., additional, Sklenicka, D.W., additional, and Steiner, M., additional

Published
1997
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19. High-spin states in odd-odd 164Lu

Author

Wang, X.-H., primary, Yu, C.-H., additional, Cullen, D.M., additional, Bryan, D.C., additional, Devlin, M., additional, Fitch, M.J., additional, Galindo-Uribarri, A., additional, Gray, R.W., additional, Herrick, D.M., additional, Ibbotson, R.W., additional, Kurz, K.L., additional, Mullins, S., additional, Pilotte, S., additional, Radford, D.C., additional, Satteson, M.R., additional, Simon, M.W., additional, Ward, D., additional, Wu, C.Y., additional, and Yao, L.H., additional

Published
1996
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20. Electromagnetic properties of tungsten nuclei

Author

Wu, C.Y., primary, Cline, D., additional, Vogt, E.G., additional, Kernan, W.J., additional, Czosnyka, T., additional, Helmer, K.G., additional, Ibbotson, R.W., additional, Kavka, A.E., additional, Kotlinski, B., additional, and Diamond, R.M., additional

Published
1991
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23. Nuclear reactions with radioactive, isomer beams: Coulomb excitation of 18Fg.s. and its J π=5+ isomer 18Fm using a large position-sensitive NaI array

Author

Zimmerman, J.A., Becchetti, F.D., Griffin, H.C., Roberts, D.A., Lee, M.Y., O’Donnell, T.W., Brown, J.A., Ronningen, R.M., Glasmacher, T., Ibbotson, R.W., Scheit, H., Pritychenko, B., Anthony, D.W., Lofy, P.A., and Steiner, M.

Subjects
*COULOMB excitation, *COLLISIONS (Nuclear physics), *EINSTEIN-Podolsky-Rosen experiment, *PHOTON beams
Abstract

Abstract: Intermediate-energy projectile Coulomb excitation of the unstable nucleus 18Fg.s. and its short-lived E x=1.1MeV (J π=5+) isomeric state (t 1/2=162ns) 18Fm have been studied at 30MeV per nucleon. Radioactive beams of 18Fg.s. and 18Fm nuclei were produced by nucleon transfer on a carbon production target and delivered to a secondary 197Au target for Coulomb excitation. Photons emitted in the vicinity of the 197Au target were detected in a large-solid-angle position-sensitive NaI(Tl) array, which allowed for the identification of the beam and target excited states populated by intermediate-energy Coulomb excitation. Two possible 18F ground-state excitations were identified, and B(Eλ↑) values were deduced. Upper limits were established for reduced transition probabilities B(E1↑) and B(E2↑) of several predicted transitions from the 18Fm isomeric state, 5+→4+, 4−, 3+, and compared with values inferred from γ-decay lifetimes. An indication of an enhanced in-flight isomer decay, possibly due to the Coulomb interaction with the target is observed and discussed. The special detector configurations and analytical techniques needed for these types of measurements are described together with suggested improvements. [Copyright &y& Elsevier]

Published
2007
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