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Your search keyword '"Bringel, P."' showing total 8 results
Start Over Author "Bringel, P." Topic nuclear & particles physics
8 results on '"Bringel, P."'

1. High-spin spectroscopy of Xe-124,Xe-125,Xe-126

Author

Al-Khatib, A, Huebel, H, Bringel, P, Engelhardt, C, Neusser-Neffgen, A, Hagemann, GB, Hansen, CR, Herskind, B, Sletten, G, Bracco, A, Camera, F, Benzoni, G, Fallon, P, Clark, RM, Carpenter, MP, Janssens, RVF, Khoo, TL, Chowdhury, P, and Amro, H

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Published
2007

2. Light charged particles as gateway to hyperdeformation

Author

Herskind, B, Hagbmann, GB, Døssing, T, Rønn Hansen, C, Schunck, N, Sletten, G, Ødegard, S, Hübel, H, Bringel, P, Bürger, A, Neusser, A, Singh, AK, Al-Khatib, A, Patel, SB, Nyakó, BM, Algora, A, Dombrádi, Z, Gál, J, Kalinka, G, Sohler, D, Molnár, J, Timár, J, Zolnai, L, Juhász, K, Bracco, A, Leon, S, Camera, F, Benzoni, G, Mason, P, Paleni, A, Million, B, Wieland, O, Bednarczyk, P, Azaiez, F, Byrski, T, Curien, D, Dakov, O, Duchene, G, Khalfallah, F, Gall, B, Piqeras, L, Robin, J, Dudek, J, Rowley, N, Redon, N, Hannachi, F, Scheurer, JN, Wilson, JN, Lopez-Martens, A, Korichi, A, Hauschild, K, Roccaz, J, Siem, S, Fallon, P, Lee, IY, Gorgen, A, Maj, A, Kmiecik, M, Brekiesz, M, Styczen, J, Zuber, K, Lisle, JC, Cederwall, B, Lagergren, K, Evans, AO, Rainovski, G, De Angelis, G, La Rana, G, Moro, R, Lieder, RM, Lieder, EO, Gast', W, Jäger, H, Pasternak, AA, Petrache, CM, and Petrache, D

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Abstract

The Euroball-IV γ-detector array, equipped with the ancillary charged particle detector array DIAMANT was used to study the residues of the fusion reaction 64Ni ⇒ 128Ba at Ebeam = 255 and 261 MeV, in an attempt to reach the highest anguar momentum and verify the existence of predicted hyperdeformed rotational bands. No discrete hyperdeformed bands were identified, but nevertheless a breakthrough was obtained a systematic search for rotational ridge structure with very large moments of inertia J (2) ≥ 100 ℏ2 MeV(-1), in agreement with theoretical predictions for hyperdeformed shapes. Evidence for hyperdeformiation was obtained by charged particle + γ-ray gating, selectiong triple correlated ridge structures in the continuum of each of the nuclei, 118Te, 124Xe and 124,125Cs. In 7 additional nuclei, rotational ridges were also identified with J(2) = 71-77ℏ2Mev(-1), which most probably correspond to surperdeformed shape. The angular distributions of the emitted charged particles show an excess in forward direction over expectations from pure compound evaporation, which may indicate that in-complete fusion plays an important role in the population of very elongated shapes.

Published
2007

3. High-spin spectroscopy of 124,125,126Xe

Author

Al-Khatib, A, Huebel, H, Bringel, P, Engelhardt, C, Neusser-Neffgen, A, Hagemann, GB, Hansen, CR, Herskind, B, Sletten, G, Bracco, A, Camera, F, Benzoni, G, Fallon, P, Clark, RM, Carpenter, MP, Janssens, RVF, Khoo, TL, Chowdhury, P, and Amro, H

Subjects
Mathematical Sciences, Physical Sciences, Nuclear & Particles Physics, Mathematical sciences, Physical sciences
Published
2007

4. Evolution from spherical single-particle structure to stable triaxiality at high spins in Nd140

Author

Petrache, CM, Fantuzi, M, Lobianco, G, Mengoni, D, Neusser-Neffgen, A, Hübel, H, Al-Khatib, A, Bringel, P, Bürger, A, Nenoff, N, Schönwasser, G, Singh, AK, Ragnarsson, I, Hagemann, GB, Herskind, B, Jensen, DR, Sletten, G, Fallon, P, Görgen, A, Bednarczyk, P, Curien, D, Gangopadhyay, G, Korichi, A, Lopez-Martens, A, Rao, BVT, Reddy, TS, and Singh, N

Subjects
Nuclear & Particles Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

The level structure of 60140Nd80 has been established up to spin 48 by in-beam γ-ray spectroscopy by use of the Zr96(Ca48, 4n) reaction. High-fold γ-ray coincidences were measured with the EUROBALL spectrometer. Twelve new rotational bands have been discovered at high spins. They are interpreted as being formed in a deep triaxial minimum at 2 0.25 and γ 35°. Possible configurations are assigned to the observed bands on the basis of configuration-dependent cranked Nilsson-Strutinsky calculations. © 2005 The American Physical Society.

Published
2005

5. Hunting grounds for Jacobi transitions and hyperdeformations

Author

Herskind, B, Benzoni, G, Wilson, JN, Døssing, T, Hagemann, GB, Sletten, G, Rønn Hansen, C, Jensen, DR, Bracco, A, Camera, F, Leoni, S, Mason, P, Wieland, O, Maj, A, Brekiesz, M, Kmiecik, M, Hübel, H, Bringel, P, Neusser, A, Singh, AK, Diamond, RM, Clark, RM, Cromaz, M, Fallon, P, Görgen, A, Lee, IY, Macchiavelli, AO, Ward, D, Hannachi, F, Korichi, A, Lopez-Martens, A, Byrski, T, Curien, D, Bednarczyk, P, Dudek, J, Amro, H, Ma, WC, Lisle, J, Ødegård, S, Petrache, C, Petrache, D, Steinhardt, T, and Thelen, O

Subjects
Nuclear & Particles Physics, Mathematical Sciences, Physical Sciences
Abstract

In recent attempts to search for exotic shapes, hyperdeformation (HD), and Jacobi transitions in Hf, Ba, Xe, Sn and Nd nuclei, ridge structures presumably originating from nuclei of very elongated shapes have been observed in 126Ba, with Gammasphere (GS) and in 126Xe, with Euroball-IV (EB-IV). After the promising results from GS, a second experiment in 126Ba followed at EB-IV, taking advantage of the use of the BGO Inner Ball (IB) for selecting the highest spins. The decay of the Giant Dipole Resonances (GDR) is also studied, and the analysis in progress. The Quasi-continuum transitions in the Jacobi region, show a significant decrease in energy for both 126Ba and 126Xe, compared to the Thomas-Fermi- and the LSD model predictions. Similar effects were recently found for other nuclei by Ward et al.

Published
2003

6. Light charged particles as gateway to hyperdeformation

Author

Herskind, B., Hagbmann, G. B., Døssing, Th, Rønn Hansen, C., Schunck, N., Sletten, G., Ødegard, S., Hübel, H., Bringel, P., Bürger, A., Neusser, A., Singh, A. K., Al-Khatib, A., Patel, S. B., Nyakó, B. M., Algora, A., Dombrádi, Z., Gál, J., Kalinka, G., Sohler, D., Molnár, J., Timár, J., Zolnai, L., Juhász, K., Bracco, A., Leon, S., Camera, F., Benzoni, G., Mason, P., Paleni, A., Million, B., Wieland, O., Bednarczyk, P., Azaiez, F., Byrski, Th, Curien, D., Dakov, O., Duchene, G., Khalfallah, F., Gall, B., Piqeras, L., Robin, J., Dudek, J., Rowley, N., Redon, N., Hannachi, F., Scheurer, J. N., Wilson, J. N., Lopez-Martens, A., Korichi, A., Hauschild, K., Roccaz, J., Siem, S., Fallon, P., Lee, I. Y., Gorgen, A., Adam Maj, Kmiecik, M., Brekiesz, M., Styczen, J., Zuber, K., Lisle, J. C., Cederwall, B., Lagergren, K., Evans, A. O., Rainovski, G., Angelis, G., La Rana, G., Moro, R., Lieder, R. M., Lieder, E. O., Gast, W., Jäger, H., Pasternak, A. A., Petrache, C. M., Petrache, D., Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-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), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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), 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)-Centre National de la Recherche Scientifique (CNRS), 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
21.60.--n, 21.10.Re, 27.60.+j, Physical Sciences, Settore FIS/01 - Fisica Sperimentale, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Nuclear & Particles Physics, Mathematical Sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare
Abstract

International audience; The Euroball-IV \gamma -detector array, equipped with the ancillary charged particle detector array DIAMANT was used to study the residues of the fusion reaction $^{64}$Ni + $^{64}$Ni \Rightarrow $^{128}$Ba at E_{beam} = 255 and 261 MeV, in an attempt to reach the highest angular momentum and verify the existence of predicted hyperdeformed rotational bands. No discrete hyperdeformed bands were identified, but nevertheless a breakthrough was obtained through a systematic search for rotational ridge structures with very large moments of inertia J(2) \ge 100 {\mathchar h}^2 MeV^(-1), in agreement with theoretical predictions for hyperdeformed shapes. Evidence for hyperdeformation was obtained by charged particle + \gamma -ray gating, selecting triple correlated ridge structures in the continuum of each of the nuclei, $^ {118}$Te, $^{124}$Xe and $^{124,125}$Cs. In 7 additional nuclei, rotational ridges were also identified with J(2) = 71--77 {\mathchar h}^2 MeV^(-1), which most probably correspond to superdeformed shape. The angular distributions of the emitted charged particles show an excess in forward direction over expectations from pure compound evaporation, which may indicate that in-complete fusion plays an important role in the population of very elongated shapes.

7. Hunting grounds for Jacobi transitions and hyperdeformations

Author

Herskind, B., Benzoni, G., Wilson, J. N., Døssing, T., Hagemann, G. B., Sletten, G., Rønn Hansen, C., Jensen, D. R., Bracco, A., Camera, F., Silvia Leoni, Mason, P., Wieland, O., Maj, A., Brekiesz, M., Kmiecik, M., Hübel, H., Bringel, P., Neusser, A., Singh, A. K., Diamond, R. M., Clark, R. M., Cromaz, M., Fallon, P., Görgen, A., Lee, I. Y., Macchiavelli, A. O., Ward, D., Hannachi, F., Korichi, A., Lopez-Martens, A., Byrski, T., Curien, D., Bednarczyk, P., Dudek, J., Amro, H., Ma, W. C., Lisle, J., Ødegård, S., Petrache, C., Petrache, D., Steinhardt, T., Thelen, O., Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), 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), Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physical Sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear & Particles Physics, Mathematical Sciences
Abstract

In recent attempts to search for exotic shapes, hyperdeformation (HD), and Jacobi transitions in Hf, Ba, Xe, Sn and Nd nuclei, ridge structures presumably originating from nuclei of very elongated shapes have been observed in 126Ba, with Gammasphere (GS) and in 126Xe, with Euroball-IV (EB-IV). After the promising results from GS, a second experiment in 126Ba followed at EB-IV, taking advantage of the use of the BGO Inner Ball (IB) for selecting the highest spins. The decay of the Giant Dipole Resonances (GDR) is also studied, and the analysis in progress. The Quasi-continuum transitions in the Jacobi region, show a significant decrease in energy for both 126Ba and 126Xe, compared to the Thomas-Fermi- and the LSD model predictions. Similar effects were recently found for other nuclei by Ward et al.

8. High-spin spectroscopy of Xe-124,Xe-125,Xe-126

Author

Al-Khatib, A., Huebel, H., Bringel, P., Engelhardt, C., Neusser-Neffgen, A., Hagemann, G. B., Hansen, C. R., Herskind, B., Sletten, G., Bracco, A., Camera, F., Benzoni, G., Fallon, P., Clark, R. M., Michael Patten Carpenter, Janssens, R. V. F., Khoo, T. L., Chowdhury, P., and Amro, H.

Subjects
Physical Sciences, Nuclear & Particles Physics, Mathematical Sciences

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