Search

Your search keyword '"Kulp, W.D."' showing total 21 results
Start Over Author "Kulp, W.D."
21 results on '"Kulp, W.D."'

4. Multiple Shape Coexistence in 110,112Cd and Beyond Mean Field Calculations

Author

Garrett, P.E., primary, Rodríguez, T.R., additional, Varela, A. Diaz, additional, Green, K.L., additional, Bangay, J., additional, Finlay, A., additional, Austin, R.A.E., additional, Ball, G.C., additional, Bandyopadhyay, D.S., additional, Bildstein, V., additional, Colosimo, S., additional, Cross, D.S., additional, Demand, G.A., additional, Finlay, P., additional, Garnsworthy, A.B., additional, Grinyer, G.F., additional, Hackman, G., additional, Jigmeddorj, B., additional, Jolie, J., additional, Kulp, W.D., additional, Leach, K.G., additional, Morten, A.C., additional, Orce, J.N., additional, Person, C.J., additional, Phillips, A.A., additional, Radich, A.J., additional, Rand, E.T., additional, Schumaker, M.A., additional, Svensson, C.E., additional, Sumithrarachchi, C., additional, Triambak, S., additional, Warr, N., additional, Wong, J., additional, Wood, J.L., additional, and Yates, S.W., additional

Published
2020
Full Text
View/download PDF

5. First candidates for $\gamma$ vibrational bands built on the $[505]11/{2}^{-}$ neutron orbital in odd-$A$ Dy isotopes

Author

MAJOLA, S.N.T., SITHOLE, M.A., MDLETSHE, L., HARTLEY, D., TIMÁR, J., NYAKÓ, B.M., ALLMOND, J.M., BARK, R.A., BEAUSANG, C., BIANCO, L., BUCHER, T.D., BVUMBI, S.P., CARPENTER, M.P., CHIARA, C.J., COOPER, N., CULLEN, D.M., CURIEN, D., DINOKO, T.S., GALL, B.J.P., GARRETT, P.E., GREENLEES, P.T., HIRVONEN, J., JAKOBSSON, U., JONES, P.M., JULIN, R., JUUTINEN, S., KETELHUT, S., KHESWA, B.V., KONDEV, F.G., KORICHI, A., KULP, W.D., LAURITSEN, T., LAWRIE, E.A., MAKHATHINI, L., MASITENG, P.L., MAQABUKA, B., MCCUTCHAN, E.A., MILLER, D., MILLER, S., MINKOVA, A., MSEBI, L., MTHEMBU, S.H., NDAYISHIMYE, J., NIEMINEN, P., NGCOBO, P.Z., NTSHANGASE, S.S., ORCE, J.N., PEURA, P., RAHKILA, P., REDON, N., RIEDINGER, L.L., RILEY, M.A., ROUX, D.G., RUOTSALAINEN, P., PIOT, J., SAREN, J., SHARPEY-SCHAFER, J.F., SCHOLEY, C., SHIRINDA, O., SIMPSON, J., SORRI, J., STEFANESCU, I., STOLZE, S., UUSITALO, J., WANG, X., WERNER, V., WOOD, J.L., YU, C.H., ZHU, S., ZIMBA, G., Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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
Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Structure, Nuclear Experiment
Abstract

Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the 155Gd({\alpha},2n)157Dy and 148Nd(12C, 5n)155Dy reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a K{\pi}= 2+ {\gamma} vibrational band, built on the [505]11/2- neutron orbital, in both odd-A 155, 157Dy isotopes. The coupling of the first excited K=0+ states or the so-called \b{eta} vibrational bands at 661 and 676 keV in 154Dy and 156Dy to the [505]11/2- orbital, to produce a K{\pi}=11/2- band, was not observed in both 155Dy and 157Dy, respectively. The implication of these findings on the interpretation of the first excited 0+ states in the core nuclei 154Dy and 156Dy are also discussed., Comment: Published in Physical Rev C

Published
2020

6. The TRIUMF nuclear structure program and TIGRESS

Author

Garrett, P.E., Andreyev, A., Austin, R.A.E., Ball, G.C., Bandyopadhyay, D., Becker, J.A., Boston, A.J., Boston, H.C., Chakrawarthy, R.S., Churchman, R., Cline, D., Cooper, R.J., Cross, D., Dashdorj, D., Demand, G.A., Dimmock, M.R., Drake, T., Finlay, P., Gagnon, K., Gallant, A.T., Green, K.L., Grint, A.N., Grinyer, G.F., Hackman, G., Harkness, L.J., Hayes, A.B., Kanungo, R., Kulp, W.D., Leach, K.G., Lee, G., Leslie, J.R., Maharaj, R., Martin, J.-P., Mattoon, C., Mills, W.J., Morton, A.C., Nelson, L., Newman, O., Nolan, P.J., Padilla-Rodal, E., Pearson, C.J., Phillips, A.A., Porter-Peden, M., Ressler, J.J., Ruiz, C., Sarazin, F., Schumaker, M.A., Scraggs, D.P., Strange, M.D., Subramanian, M., Svensson, C.E., Waddington, J.C., Wan, J., Whitbeck, A., Williams, S.J., Wood, J.L., Wong, J.C., Wu, C.Y., and Zganjar, E.F.

Published
2007
Full Text
View/download PDF

7. Pile-up corrections for high-precision superallowed [formula omitted] decay half-life measurements via [formula omitted]-ray photopeak counting

Author

Grinyer, G.F., Svensson, C.E., Andreoiu, C., Andreyev, A.N., Austin, R.A.E., Ball, G.C., Bandyopadhyay, D., Chakrawarthy, R.S., Finlay, P., Garrett, P.E., Hackman, G., Hyland, B., Kulp, W.D., Leach, K.G., Leslie, J.R., Morton, A.C., Pearson, C.J., Phillips, A.A., Sarazin, F., Schumaker, M.A., Smith, M.B., Valiente-Dobón, J.J., Waddington, J.C., Williams, S.J., Wong, J., Wood, J.L., and Zganjar, E.F.

Published
2007
Full Text
View/download PDF

8. High-Statistics Study of the β+/EC-Decay of 110In

Author

Varela A. Diaz, Garrett P.E., Ball G.C., Banjay J.C., Cross D.S., Demand G.A., Finlay P., Garnsworthy A.B., Green K.L., Hackman G., Kulp W.D., Leach K.G., Orce J.N., Phillips A.A., Rand E.T., Svensson C.E., Sumithrarachchi C., Triambak S., Wong J., Wood J.L., and Yates S.W.

Subjects
Physics, QC1-999
Abstract

A study of the 110In β+/EC decay was performed at the TRIUMF Isotope Separator and Accelerator (ISAC) facility to probe the nuclear structure of 110Cd. The data were collected in scaled-down γ-ray singles, γ − γ coincidence, and γ-electron coincidence mode. The data were sorted and a random-background subtracted γ − γ matrix was created containing a total of 850 million events. We expanded the level scheme of 110Cd significantly by identifying 75 levels under 3.8 MeV, including 12 new ones, and increased the number of previously observed transitions from these levels to 273. The γ-ray branching intensities have been extracted through an analysis of the coincidence intensities. The branching ratios were combined with a reanalysis of lifetimes measurements obtained in an (n, n'γ) reaction with monoenergetic neutrons for the calculation of B(E2) values and these results have lead to the proposal of a γ-soft rotor, or O(6) nucleus, rather than a vibrational, or U(5) pattern for the nature of the low-lying, low-spin levels in 110Cd.

Published
2014
Full Text
View/download PDF

9. Studies of high- K isomers at TRIUMF-ISAC

Author

Smith, M.B., Walker, P.M., Chakrawarthy, R.S., Austin, R.A.E., Ball, G.C., Carroll, J.J., Cunningham, E., Finlay, P., Garrett, P.E., Grinyer, G.F., Hackman, G., Hyland, B., Koopmans, K., Kulp, W.D., Leslie, J.R., Phillips, A.A., Propri, R., Regan, P.H., Sarazin, F., Schumaker, M.A., Scraggs, H.C., Shizuma, T., Svensson, C.E., von Schwarzenberg, J., Waddington, J.C., Ward, D., Wood, J.L., Washbrook, B., and Zganjar, E.F.

Published
2004
Full Text
View/download PDF

11. Towards digital spectroscopy of proton emitters

Author

Rykaczewski, K.P., Grzywacz, R.K., Karny, M., McConnell, J.W., Momayezi, M., Wahl, J., Janas, Z., Batchelder, J.C., Bingham, C.R., Hartley, D., Tantawy, M.N., Gross, C.J., Ginter, T.N., Hamilton, J.H., Kulp, W.D., Lipoglavsek, M., Piechaczek, A., Zganjar, E.F., Walters, W.B., and Winger, J.A.

Published
2001
Full Text
View/download PDF

12. Investigation of negative-parity states in Dy 156: Search for evidence of tetrahedral symmetry

Author

Miller, S., Dudek, J., Wang, X., Piot, J., Lauritsen, T., Carpenter, M.P., Werner, V., Majola, S.N.T., Gall, B.J.P., Chiara, C.J., Redon, N., Hartley, D.J., Kondev, F.G., Miller, D., Kulp, W.D., Wood, J.L., Zhu, S., Sharpey-Schafer, J.F., Stefanescu, I., McCutchan, E.A., Cooper, N., Janssens, R.V.F., Yu, C.-H., Simpson, J., Allmond, J.M., Curien, D., Garrett, P.E., Riley, M.A., Beausang, C.W., and Riedinger, L.L.

Abstract

An experiment populating low/medium-spin states in Dy156 was performed to investigate the possibility of tetrahedral symmetry in this nucleus. In particular, focus was placed on the low-spin, negative-parity states since recent theoretical studies suggest that these may be good candidates for this high-rank symmetry. The states were produced in the Nd148(C12,4n) reaction and the Gammasphere array was utilized to detect the emitted γ rays. B(E2)/B(E1) ratios of transition probabilities from the low-spin, negative-parity bands were determined and used to interpret whether these structures are best associated with tetrahedral symmetry or, as previously assigned, to octupole vibrations. In addition, several other negative-parity structures were observed to higher spin and two new sequences were established.

Published
2017
Full Text
View/download PDF

13. Narrowing of the neutron sd–pf shell gap in 29Na

Author

Hurst, A.M., Wu, C.Y., Becker, J.A., Stoyer, M.A., Pearson, C.J., Hackman, G., Schumaker, M.A., Svensson, C.E., Austin, R.A.E., Ball, G.C., Bandyopadhyay, D., Barton, C.J., Boston, A.J., Boston, H.C., Churchman, R., Cline, D., Colosimo, S.J., Cross, D.S., Demand, G., Djongolov, M., Drake, T.E., Garrett, P.E., Gray-Jones, C., Green, K.L., Grint, A.N., Hayes, A.B., Leach, K.G., Kulp, W.D., Lee, G., Lloyd, S., Maharaj, R., Martin, J.-P., Millar, B.A., Mythili, S., Nelson, L., Nolan, P.J., Oxley, D.C., Padilla-Rodal, E., Phillips, A.A., Porter-Peden, M., Rigby, S.V., Sarazin, F., Sumithrarachchi, C.S., Triambak, S., Walker, P.M., Williams, S.J., Wong, J., and Wood, J.L.

Subjects
Nuclear and High Energy Physics
Published
2009
Full Text
View/download PDF

14. Observation of γ vibrations and alignments built on non-ground-state configurations in Dy156

Author

Majola, S.N.T., Hartley, D.J., Riedinger, L.L., Sharpey-Schafer, J.F., Allmond, J.M., Beausang, C., Carpenter, M.P., Chiara, C.J., Cooper, N., Curien, D., Gall, B.J.P., Garrett, P.E., Janssens, R.V.F., Kondev, F.G., Kulp, W.D., Lauritsen, T., Mccutchan, E.A., Miller, D., Piot, J., Redon, N., Riley, M.A., Simpson, J., Stefanescu, I., Werner, V., Wang, X., Wood, J.L., Yu, C.-H., Zhu, S., Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

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

International audience; The exact nature of the lowest Kπ=2+ rotational bands in all deformed nuclei remains obscure. Traditionally they are assumed to be collective vibrations of the nuclear shape in the γ degree of freedom perpendicular to the nuclear symmetry axis. Very few such γ bands have been traced past the usual backbending rotational alignments of high-j nucleons. We have investigated the structure of positive-parity bands in the N=90 nucleus Dy156, using the Nd148(C12,4n)Dy156 reaction at 65 MeV, observing the resulting γ-ray transitions with the Gammasphere array. The even- and odd-spin members of the Kπ=2+γ band are observed up to 32+ and 31+, respectively. This rotational band faithfully tracks the ground-state configuration to the highest spins. The members of a possible γ vibration built on the aligned yrast S band are observed up to spins 28+ and 27+. An even-spin positive-parity band, observed up to spin 24+, is a candidate for an aligned S band built on the seniority-zero configuration of the 0+2 state at 676 keV. The crossing of this band with the 0+2 band is at ℏωc=0.28(1)MeV and is consistent with the configuration of the 0+2 band not producing any blocking of the monopole pairing.

Published
2015

15. Observation of γ vibrations and alignments built on non-ground-state configurations in Dy 156

Author

Cooper, N., Garrett, P.E., Riley, M.A., Piot, J., Beausang, C., Miller, D., Werner, V., Majola, S.N.T., Kulp, W.D., Yu, C.-H., Kondev, F.G., Chiara, C.J., Riedinger, L.L., Hartley, D.J., Zhu, S., Curien, D., Stefanescu, I., Allmond, J.M., Gall, B.J.P., Janssens, R.V.F., Sharpey-Schafer, J.F., Wang, X., Wood, J.L., Carpenter, M.P., Redon, N., Simpson, J., Lauritsen, T., and McCutchan, E.A.

Abstract

The exact nature of the lowest Kπ=2+ rotational bands in all deformed nuclei remains obscure. Traditionally they are assumed to be collective vibrations of the nuclear shape in the γ degree of freedom perpendicular to the nuclear symmetry axis. Very few such γ bands have been traced past the usual backbending rotational alignments of high-j nucleons. We have investigated the structure of positive-parity bands in the N=90 nucleus Dy156, using the Nd148(C12,4n)Dy156 reaction at 65 MeV, observing the resulting γ-ray transitions with the Gammasphere array. The even- and odd-spin members of the Kπ=2+γ band are observed up to 32+ and 31+, respectively. This rotational band faithfully tracks the ground-state configuration to the highest spins. The members of a possible γ vibration built on the aligned yrast S band are observed up to spins 28+ and 27+. An even-spin positive-parity band, observed up to spin 24+, is a candidate for an aligned S band built on the seniority-zero configuration of the 02+ state at 676 keV. The crossing of this band with the 02+ band is at ?ωc=0.28(1)MeV and is consistent with the configuration of the 02+ band not producing any blocking of the monopole pairing.

Published
2015
Full Text
View/download PDF

16. High-Statistics Study of theβ+/EC-Decay of110In

Author

Varela, A. Diaz, primary, Garrett, P.E., additional, Ball, G.C., additional, Banjay, J.C., additional, Cross, D.S., additional, Demand, G.A., additional, Finlay, P., additional, Garnsworthy, A.B., additional, Green, K.L., additional, Hackman, G., additional, Kulp, W.D., additional, Leach, K.G., additional, Orce, J.N., additional, Phillips, A.A., additional, Rand, E.T., additional, Svensson, C.E., additional, Sumithrarachchi, C., additional, Triambak, S., additional, Wong, J., additional, Wood, J.L., additional, and Yates, S.W., additional

Published
2014
Full Text
View/download PDF

17. Pile-up corrections for high-precision superallowed decay half-life measurements via -ray photopeak counting

Author

Grinyer, G.F., primary, Svensson, C.E., additional, Andreoiu, C., additional, Andreyev, A.N., additional, Austin, R.A.E., additional, Ball, G.C., additional, Bandyopadhyay, D., additional, Chakrawarthy, R.S., additional, Finlay, P., additional, Garrett, P.E., additional, Hackman, G., additional, Hyland, B., additional, Kulp, W.D., additional, Leach, K.G., additional, Leslie, J.R., additional, Morton, A.C., additional, Pearson, C.J., additional, Phillips, A.A., additional, Sarazin, F., additional, Schumaker, M.A., additional, Smith, M.B., additional, Valiente-Dobón, J.J., additional, Waddington, J.C., additional, Williams, S.J., additional, Wong, J., additional, Wood, J.L., additional, and Zganjar, E.F., additional

Published
2007
Full Text
View/download PDF

18. Tests of the standard model from superallowed Fermi β-decay studies: The 74Rb β-decay

Author

Zganjar, E.F., primary, Piechaczek, A., additional, Ball, G.C., additional, Bricault, P., additional, D'Auria, J.M., additional, Hardy, J.C., additional, Hodgson, D.F., additional, Iacob, V., additional, Klages, P., additional, Kulp, W.D., additional, Leslie, J.R., additional, Lipoglavsek, M., additional, Macdonald, J.A., additional, Mak, H.-B., additional, Moltz, D.M., additional, Savard, G., additional, von Schwarzenberg, J., additional, Svensson, C.E., additional, Towner, I.S., additional, and Wood, J.L., additional

Published
2002
Full Text
View/download PDF

19. Fine structure in one-proton emission studied at Oak Ridge.

Author

Rykaczewski, K.P., Grzywacz, R., Batchelder, J.C., Bingham, C.R., Fong, D., Ginter, T.N., Gross, C.J., Hamilton, J.H., Hartley, D.J., HWang, J.K., Janas, Z., Karny, M., Króas, W., Kulp, W.D., Larochelle, Y., Lewis, T.A., Maier, K.H., McConnell, J.W., and Piechaczek, A.

Subjects
CHEMICAL structure, PROTONS, MACHINE separators, NUCLEAR shapes, WAVE functions
Abstract

Two observations of fine structure in proton emission are reported : 3-μs 145Tm and 4-ms 141Ho. These experiments were performed using the Recoil Mass Separator (RMS) at the Holifield Radioactive Ion Beam Facility at Oak Ridge. The signals from the RMS detectors were digitally processed using Digital Gamma Finder modules. The fine structure branching ratios, 9.6±1.5% and 0.70±0.15%, and measured energies of the 2+ excited levels in daughter nuclei, 330 and 202 keV, respectively, helped us to determine the deformations and wave functions of proton-emitting states. © 2003 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2003
Full Text
View/download PDF

21. Tests of the standard model from superallowed Fermi β-decay studies: The 74Rb β-decay.

Author

Zganjar, E.F., Piechaczek, A., Ball, G.C., Bricault, P., D'Auria, J.M., Hardy, J.C., Hodgson, D.F., Iacob, V., Klages, P., Kulp, W.D., Leslie, J.R., Lipoglavsek, M., Macdonald, J.A., Mak, H.-B., Moltz, D.M., Savard, G., von Schwarzenberg, J., Svensson, C.E., Towner, I.S., and Wood, J.L.

Abstract

Precise measurements of the intensities of superallowed Fermi 0+ → 0+β-decays have provided a powerful test of the CVC hypothesis at the level of 3×10-4 and also led to a result in disagreement with unitarity for the CKM matrix at the 98% confidence level. It is essential to address possible trivial explanations for the apparent non-unitarity such as uncertainties in the isospin symmetry-breaking corrections. We have carefully studied the 74Rb →74Kr β-decay in order to measure the non-analog β-decay branching to the 0+ state at 508 keV in 74Kr. We have determined that this branching is < 3×10-4, far smaller than any published theoretical estimate. We also show that high-precision, complete spectroscopy, measuring the major β-branches to excited 0+ and 1+ states, must be performed if one is to obtain a meaningful branching ratio to the excited 0+ state and concomitantly deal, in a substantial way, with the possibility of β feeding to an array of 1+ states. [ABSTRACT FROM AUTHOR]

Published
2002
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results