Search

Your search keyword '"D. CABAUSSEL"' showing total 10 results
Start Over Author "D. CABAUSSEL"
10 results on '"D. CABAUSSEL"'

1. Improvements in the in-beam γ-ray spectroscopy provided by an ancillary detector coupled to a Ge γ-spectrometer: the DIAMANT-EUROGAM II example

Author

D. Curien, A. Brondi, J. N. Scheurer, M. Harston, T.P. Doan, M. M. Aléonard, J.F. Chemin, D. Boivin, R. Moro, F. Bourgine, D. Cabaussel, M. Aiche, Emanuele Vardaci, G. La Rana, J.P. Goudour, G. Barreau, J. N., Scheurer, M., Aiche, M. M., Aleonard, G., Barreau, F., Bourgine, D., Boivin, D., Cabaussel, J. F., Chemin, T. P., Doan, J. P., Goudour, M., Harston, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Vardaci, Emanuele, and D., Curien

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, business.industry, Detector, scintillation detector, Scintillator, Doppler shift correction, gamma ray spectroscopy, Charged particle, Nuclear physics, symbols.namesake, Optics, symbols, Gamma spectroscopy, Spectroscopy, business, charged particle spectrometer, Instrumentation, Doppler effect, Beam (structure)
Abstract

For the first time the 4π γ-ray spectrometer EUROGAM II has been coupled to a 4π light charged particle detector array, DIAMANT, during a test experiment on the reaction 32 S + 58 Ni at 120 MeV beam energy. A very large improvement in the peak-to-background ratio of the γ-spectra has been found when EUROGAM II is triggered by DIAMANT to select an exit channel. A simple algebra has been developed which provides theoretical estimates in good agreement with these experimental results. It is demonstrated that, depending on both the γ-spectrometer and ancillary detector performances, much better peak-to-background can be obtained by such a coupling. For the same peak-to-background ratio, the use of an ancillary detector allows for a lower γ-ray coincidence level and therefore improves the statistics. Ways to select the most appropriate ancillary detector are given. The ability of the ancillary detector to provide a total Doppler shift correction is crucial for the improvement of the peak-to-background ratio.

Published
1997
Full Text
View/download PDF

2. Energy sharing in the deexcitation of the90Ru compound nucleus via thepαchannel

Author

G. Barreau, A. Principe, A. Brondi, M. M. Aléonard, J. N. Scheurer, M. Harston, J.P. Goudour, D. Cabaussel, D. Curien, D. Boivin, M. Aiche, F. Bourgine, R. Moro, G. La Rana, J.F. Chemin, Emanuele Vardaci, and T.P. Doan

Subjects
Physics, Nuclear and High Energy Physics, Angular momentum, Spectrometer, Available energy, Evaporation, Alpha particle, Atomic physics, Charged particle, Energy (signal processing), Excitation
Abstract

Using the 4$\ensuremath{\pi}$ light charged-particle detector DIAMANT in combination with the $\ensuremath{\gamma}$-ray spectrometer EUROGAM II, the decay of the ${}^{90}$Ru compound nucleus via the $p\ensuremath{\alpha}$ channel was studied. These nuclei were produced at an excitation energy of 54.9 MeV and with a maximum angular momentum of 37$\ensuremath{\Elzxh}$ by the 120 MeV ${}^{32}$S + ${}^{58}$Ni reaction. The measurement of the energy of the two particles allowed the determination of the energy distribution of the entry states. A particular behavior of the sharing of the available energy between the two particles was found: For increasing values of the entry-state energy, the mean energy for protons remains almost constant while for alpha particles it decreases. This behavior is well reproduced by the evaporation code LILITA_N95. The physics underlying the decay is discussed in the framework of the statistical model which predicts a strong correlation between the excitation energy and the angular momentum of the evaporation residue. This result encourages the use of the $p\ensuremath{\alpha}$ channel to select the excitation energy and the angular momentum of the evaporation residue for superdeformed band studies.

Published
1997
Full Text
View/download PDF

3. Correction method for Doppler broadened $\gamma$-ray lines using the linear momentum of the evaporated charged particles in heavy-ion induced fusion-evaporation reactions

Author

Emanuele Vardaci, G. Barreau, J. N. Scheurer, M. Harston, A. Brondi, G. La Rana, D. Cabaussel, F. Hannachi, R. Moro, F. Bourgine, M. M. Aléonard, J.F. Chemin, D. Boivin, M. Aiche, D. Curien, 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), Institut de Recherches Subatomiques (IReS), 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), 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), EUROBALL, M., Aiche, M. M., Alonard, G., Barreau, D., Boivin, F., Bourgine, D., Cabaussel, J. F., Chemin, M., Harston, J. N., Scheurer, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Brondi, Augusto, Vardaci, Emanuele, and D. CURIEN, F. HANNACHI

Subjects
Nuclear and High Energy Physics, Light charged particle, Fusion–evaporation, Astrophysics::High Energy Astrophysical Phenomena, EUROBALL SPECTROMETER, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, SUPERDEFORMED BAND, Coincidence, DIAMANT, symbols.namesake, GAMMASPHERE, 0103 physical sciences, Doppler shift, Nuclear Experiment, 010306 general physics, COMPOUND NUCLEUS, GAMMA SPECTROSCOPY, Instrumentation, DETECTOR, Physics, Fusion, Spectrometer, 010308 nuclear & particles physics, Detector, Evaporation (deposition), Charged particle, EUROGAM II, symbols, Granularity, Atomic physics, Doppler effect
Abstract

A method based on the conservation of linear momentum is used to correct the position and the width of the γ-ray lines of the residual nucleus produced in heavy-ion induced fusion–evaporation reactions. This method implies the measurement of the total number of the emitted particles, their masses, energies and directions of emission in coincidence with the prompt γ-rays. It has been applied to the 120 MeV 32 S + 58 Ni reaction whose data have been collected using the high efficiency and large granularity 4π light charged particle detector DIAMANT, coupled to the 4π γ-ray spectrometer EUROGAM II.

Published
2003
Full Text
View/download PDF

4. Insight on the Compound Nucleus Decay via the p-alpha channel

Author

VARDACI, EMANUELE, BRONDI, AUGUSTO, LA RANA, GIOVANNI, MORO, RENATA EMILIA MARIA, F. Bourgine, D. Cabaussel, D. Boivin, M. Aiche, M. M. Aleonard, G. Barreau, J. F. Chemin, T. P. Doan, J. P. Goudour, M. Harston, J. N. Scheurer, A. Principe, D. Curien, Y. Oganessian, R. Kalpakchieva, Vardaci, Emanuele, F., Bourgine, D., Cabaussel, D., Boivin, M., Aiche, M. M., Aleonard, G., Barreau, J. F., Chemin, T. P., Doan, J. P., Goudour, M., Harston, J. N., Scheurer, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, A., Principe, and D., Curien

Subjects
gamma array, statistical model, compound nucleus decay, gamma-particle coincidences
Abstract

The decay of Ru-90 compound nucleus via the p-alpha channel (about 1% of the fusion cross-section) was studied using the 4pi light charged-particle detector DIAMANT coupled to the gamma-ray spectrometer EUROGAM-II. The high selectivity of the apparatus allowed the determination of the total kinetic energy of the two particles with good statistics. Particle energy spectra and angular correlations have been analysed as a function of the excitation energy of the entry states and compared to statistical model calculations. As the excitation energy of the entry states increases, the mean energy carried out by the protons remains almost constantwhereas the one of the alpha particle decreases. This behaviour is well reproduced by the evaporation code LILITA_N85, which predicts a strong correlation between the excitation energy and the angular momentum of the evaporation residues. This findings could help to enhance the population of superdeformed bands by using the total kinetic energy of the two particles as a gating condition.

Published
1998

5. The DIAMANT electronics and data acquisition system

Author

M Aïche, M.M Aléonard, B Balauge, G Barreau, F Bourgine, D Cabaussel, J.F Chemin, C Diarra, J.P Goudour, M Harston, H Rasolofo, J.N Scheurer, A Brondi, G La Rana, R Moro, E Vardaci, D Curien, 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), Institut de Recherches Subatomiques (IReS), 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), EUROGAM, M., Aiche, M. M., Aleonard, B., Balauge, M. M., Barreau, B., Bourgine, D., Cabaussel, J. F., Chemin, C., Diarra, J. P., Goudour, M., Harston, H., Rasolofo, J. N., Scheurer, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Vardaci, Emanuele, and D., Curien

Subjects
Physics, Nuclear and High Energy Physics, data acquisition, business.industry, Detector, 32-bit, Modular design, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], light charged particle, DIAMANT, Data acquisition, Electronics, business, Instrumentation, multidetector, Computer hardware, Computer Automated Measurement and Control, VMEbus, Data transmission
Abstract

We describe the electronics and data acquisition system of the 4π light particle multidetector array DIAMANT. This system has been conceived to be very modular with regard to both the kind and number of detectors. The whole system is designed to run either with a few additional ancillary detectors (Ge) or linked to 4π γ arrays such as EUROGAM. Part of the electronics has been designed using SMD devices; the acquisition is based on CAMAC ADCs and VME units for data acquisition, data transfer is handled via a 32 bit ECL bus (DT32) used for EUROGAM. The data acquisition, distributed on a network, is based on the VxWorks Real Time kernel and the UNIX Operating System.

Published
1997

6. Energy sharing in the deexcitation of the Ru-90 compound nucleus via the p alpha channel

Author

F. Bourgine, D. Cabaussel, D. Boivin, M. Aiche, M. M. Aleonard, G. Barreau, J. F. Chemin, T. P. Doan, J. P. Goudour, M. Harston, J. N. Scheurer, BRONDI, AUGUSTO, LA RANA, GIOVANNI, MORO, RENATA EMILIA MARIA, A. Principe, VARDACI, EMANUELE, D. Curien, F., Bourgine, D., Cabaussel, D., Boivin, M., Aiche, M. M., Aleonard, G., Barreau, J. F., Chemin, T. P., Doan, J. P., Goudour, M., Harston, J. N., Scheurer, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, A., Principe, Vardaci, Emanuele, and D., Curien

Subjects
PROTON EVAPORATION SPECTRA, HIGH SPIN STATES, SUPERDEFORMED BAND, DIAMANT, PARTICLE EVAPORATION
Abstract

Using the 4 pi light charged-particle detector DIAMANT in combination with the gamma-ray spectrometer EUROGAM II, the decay of the Ru-90 compound nucleus via the p alpha channel was studied. These nuclei were produced at an excitation energy of 54.9 MeV and with a maximum angular momentum of 37 (h) over bar by the 120 MeV S-32 + Ni-58 reaction. The measurement of the energy of the two particles allowed the determination of the energy distribution of the entry states. A particular behavior of the sharing of the available energy between the two particles was found: For increasing values of the entry-state energy, the mean energy for protons remains almost constant while for alpha panicles it decreases. This behavior is well reproduced by the evaporation code LILITA_N95. The physics underlying the decay is discussed in the framework of the statistical model which predicts a strong correlation between the excitation energy and the angular momentum of the evaporation residue. This result encourages the use of the p alpha channel to select the excitation energy and the angular momentum of the evaporation residue for superdeformed band studies.

Published
1997

7. Energy sharing in the de-excitation of 44Ti and 90Ru compound nuclei via pa and 2a channels

Author

F. BOURGINE, D. CABAUSSEL, D. BOIVIN, M. AICHE, J. F. CHEMIN, J. N. SCHEURER, M. M. ALEONARD, G. BARREAU, T. P. DOAN, BRONDI, AUGUSTO, LA RANA, GIOVANNI, MORO, RENATA EMILIA MARIA, F., Bourgine, D., Cabaussel, D., Boivin, M., Aiche, J. F., Chemin, J. N., Scheurer, M. M., Aleonard, G., Barreau, T. P., Doan, Brondi, Augusto, LA RANA, Giovanni, and Moro, RENATA EMILIA MARIA

Published
1997

8. First results with DIAMANT and EUROGAM

Author

M. AICHE, M. M. ALEONARD, G. BARREAU, F. BOURGINE, D. CABAUSSEL SELLAM, D. CURIEN, J. F. CHEMIN, J. P. GOUDOUR, M. HARSTON, BRONDI, AUGUSTO, LA RANA, GIOVANNI, MORO, RENATA EMILIA MARIA, M., Aiche, M. M., Aleonard, G., Barreau, F., Bourgine, Brondi, Augusto, D., CABAUSSEL SELLAM, D., Curien, J. F., Chemin, J. P., Goudour, M., Harston, LA RANA, Giovanni, and Moro, RENATA EMILIA MARIA

Published
1997

9. DIAMANT and EUROGAM : improvements in the observation limits and study of the ^{90}Ru and ^{44}Ti compound nuclei decay

Author

M. M. Aléonard, J.F. Chemin, F. Bourgine, D. Cabaussel, Emanuele Vardaci, J. N. Scheurer, M. Harston, G. Barreau, D. Curien, G. La Rana, R. Moro, A. Brondi, M. Aiche, 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), Institut de Recherches Subatomiques (IReS), 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), Faessler A., M. M., Aleonard, M., Aiche, G., Barreau, F., Bourgine, D., Cabaussel, J. F., Chemin, M., Harston, J. N., Scheurer, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Vardaci, Emanuele, D., Curien, and Chambon, Pascale

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, LIGHT CHARGED PARTICLE DETECTORS, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, 0103 physical sciences, EUROGAM, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences, DIAMANT
Published
1996

10. First results with DIAMANT and EUROGAM

Author

J.P. Goudour, A. Brondi, Emanuele Vardaci, R. Moro, J. N. Scheurer, M. Harston, F. Bourgine, J.F. Chemin, M. Aiche, G. La Rana, D. Cabaussel-Sellam, D. Curien, G. Barreau, M. M. Aléonard, 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), Institut de Recherches Subatomiques (IReS), 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), EUROGAM, Chambon, Pascale, M., Aiche, M. M., Aleonard, G., Barreau, F., Bourgine, Brondi, Augusto, D., Cabausselsellam, D., Curien, J. F., Chemin, J. P., Goudour, M., Harston, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, J. N., Scheurer, and Vardaci, Emanuele

Subjects
Physics, Coupling, LIGHT CHARGED PARTICLE ARRAY, Nuclear and High Energy Physics, Fusion, 010308 nuclear & particles physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Detector, Evaporation, EUROGAM, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, DIAMANT, Charged particle, Nuclear physics, symbols.namesake, 0103 physical sciences, symbols, Nuclear fusion, Particle, Atomic physics, Nuclear Experiment, 010306 general physics, Doppler effect
Abstract

The coupling of efficient particle and gamma detection arrays is a powerful tool to study the deexcitation of both compound and residual nuclei in fusion evaporation reactions. We show first results obtained coupling the DIAMANT (4 pi light charged particle array) and EUROGAM (4 pi gamma array) detectors demonstrating the improvement in the resolving power by this combination. For gamma rays of similar or equal to 800keV improvements in the Doppler correction up to 50% have been reached for the 2 alpha exit channel following the fusion of S-32+Ni-58 at 120 MeV bombarding energy (beta similar or equal to 3%).

Published
1997

Catalog

Books, media, physical & digital resources
See catalog results