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Start Over Author "A.J. Boston" Topic nuclear and high energy physics
6 results on '"A.J. Boston"'

4. The use of EXOGAM for in-beam spectroscopy of proton drip-line nuclei with radioactive ion beams

Author

M. Petri, E.S. Paul, P.J. Nolan, A.J. Boston, H.C. Boston, R.J. Cooper, M.R. Dimmock, S. Gros, B.M. McGuirk, G. Turk, D. Guinet, Ph. Lautesse, M. Meyer, N. Redon, B. Rossé, Ch. Schmitt, O. Stézowski, S. Bhattacharyya, G. De France, G. Mukherjee, F. Rejmund, H. Savajols, J.N. Scheurer, J. Gál, J. Molnár, B.M. Nyakó, J. Timár, L. Zolnai, K. Juhász, A. Astier, I. Deloncle, M.G. Porquet, A. Prévost, V.F.E. Pucknell, R. Wadsworth, P. Joshi, G. La Rana, R. Moro, M. Trotta, E. Vardaci, G. Hackman, G.C. Ball, Oliver Lodge Laboratory, University of Liverpool, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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), Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences (BAS), Department of Information Technology, University of Debrecen, 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), STFC Daresbury Laboratory, Daresbury Laboratory, Department of Physics, University of York [York, UK], Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Istituto Nazionale di Fisica Nucleare (INFN), TRIUMF [Vancouver], EXOGAM, M., Petri, E. S., Paul, P. J., Nolan, A. J., Boston, H. C., Boston, R. J., Cooper, M. R., Dimmock, S., Gro, B. M., Mcguirk, G., Turk, D., Guinet, Lautesse, P. h., M., Meyer, N., Redon, B., Rossé, Schmitt, C. h., O., Stézowski, S., Bhattacharyya, G., De France, G., Mukherjee, F., Rejmund, H., Savajol, J. N., Scheurer, J., Gál, J., Molnár, B. M., Nyakó, J., Timár, L., Zolnai, K., Juhász, A., Astier, I., Deloncle, M. G., Porquet, A., Prévost, V. F. E., Pucknell, R., Wadsworth, P., Joshi, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, M., Trotta, Vardaci, Emanuele, G., Hackman, G. C. B. a. l., L., 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), University of Debrecen Egyetem [Debrecen], 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
Radioactive ion beams, Nuclear and High Energy Physics, Proton, Fizikai tudományok, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, DIAMANT, Nuclear physics, EXOGAM, Recoil, Természettudományok, 0103 physical sciences, proton drip-line nuclei, 010306 general physics, Spectroscopy, Nuclear Experiment, Instrumentation, Line (formation), Physics, in-beam spectroscopy, Spectrometer, 010308 nuclear & particles physics, DIAMANT array of CsI charged-particle detectors, VAMOS, Physics::Accelerator Physics, Segmented Clover germanium detector, Linear polarisation, Atomic physics, Radioactive ion beam, EXOGAM array of HPGe detectors, Beam (structure)
Abstract

International audience; One of the first fusion–evaporation experiments using radioactive ion beams was performed at GANIL in order to study proton-rich nuclei of the light rare-earth region. The low production cross-section of the exotic species of interest, in combination with the low intensity of the beam and its induced background, demanded the use of a highly efficient experimental setup. This consisted of the EXOGAM γ-ray spectrometer coupled for the first time with both the DIAMANT charged-particle array and the VAMOS recoil spectrometer. In this report the experimental challenges of such studies will be discussed and the experimental achievements of the in-beam spectroscopy of proton drip-line nuclei using EXOGAM will be presented.

Published
2009
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5. Application of the Broad Energy Germanium detector: A technique for elucidating β -decay schemes which involve daughter nuclei with very low energy excited states

Author

M. Venhart, D. S. Judson, M. Sedlák, Adarsh Patel, L. J. Harkness-Brennan, Kristian Petrík, J. L. Wood, M. Veselský, Š. Motyčák, Vladislav Matoušek, A.J. Boston, R.-D. Herzberg, R. D. Page, Thomas Elias Cocolios, D. T. Joss, and J. Kliman

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Isotope, 010308 nuclear & particles physics, Detector, chemistry.chemical_element, Germanium, 01 natural sciences, Semiconductor detector, Nuclear physics, chemistry, Excited state, 0103 physical sciences, Density of states, Physics::Accelerator Physics, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Instrumentation, Excitation
Abstract

A technique for elucidating β -decay schemes of isotopes with a large density of states at low excitation energy has been developed, in which a Broad Energy Germanium (BEGe) detector is used in conjunction with coaxial hyper-pure germanium detectors. The power of this technique is demonstrated using the example of 183 Hg decay. Mass-separated samples of 183 Hg were produced by a deposition of the low-energy radioactive-ion beam delivered by the ISOLDE facility at CERN. The excellent energy resolution of the BEGe detector allowed γ -ray energies to be determined with a precision of a few tens of eV, which was sufficient for the analysis of the Rydberg-Ritz combinations (in conjunction with γ - γ coincidences) in the level scheme. The timestamped structure of the data was used for unambiguous separation of γ rays arising from the decay of 183 Hg from those due to the daughter decays.

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6. Characterisation of an AGATA symmetric prototype detector

Author

L. Nelson, H. C. Boston, Matthew Richard Dimmock, C. Parisel, P. J. Nolan, C. Santos, J.R. Cresswell, I.H. Lazarus, P. Medina, J. Simpson, A. J. Boston, 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), A.J. Boston, J. Vossebeld, P.P. Allport, P.J. Nolan and C.J. Hall, and AGATA

Subjects
Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], computer.software_genre, Tracking (particle physics), 01 natural sciences, 07.85.Nc, 29.30.-h, 29.30.Kv, 29.40.Gx, Collimated light, PSA, Optics, γ Ray tracking, 0103 physical sciences, Digital acquisition, 010306 general physics, Instrumentation, Physics, Digital electronics, 010308 nuclear & particles physics, business.industry, Detector, HPGe detectors, Simulation software, Pulse (physics), E-field simulation, AGATA, business, computer
Abstract

International audience; The Advanced GAmma Tracking Array (AGATA) symmetric prototype detector has been tested at the University of Liverpool. A 137Ce source, collimated to a 2 mm diameter, was scanned across the front face of the detector and data were acquired utilising digital electronics. Pulse shapes from a selection of well-defined photon interaction positions have been analysed to investigate the position sensitivity of the detector. Furthermore, the application of the electric field simulation software, Multi Geometry Simulation (MGS) to generate theoretical pulse shapes for AGATA detectors has been presented.

Published
2005
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