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^(237)Np(n,f) Cross Section: New Data and Present Status
C. Paradela,L. Tassan-Got,L. Audouin,B. Berthier,L. Ferrant,S. Isaev,C. Le Naour,C. Stephan,D. Trubert,S. David,I. Duran,D. Tarrio,H. Alvarez-Pol,U. Abbondanno,K. Fujii,P. M. Milazzo,C. Moreau,G. Aert 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
In this document, we present the final result obtained at the n_TOF experiment for the neutron-induced fission cross section of the ^(237)Np, from the fission threshold up to 1 GeV. The method applied to get this result is brie y discussed. n_TOF data are compared to the last experimental measurements using other TOF facilities or the surrogate method, reported experiments performed with monoenergetic sources and the FISCAL systematic, including a discussion about the existing discrepancies.
Study of Photon Strength Function of Actinides: the Case of ^(235)U, ^(238)Np and ^(241)Pu
C. Guerrero,F. Alvarez-Velarde,D. Cano-Ott,T. Martinez,E. Mendoza,D. Villamarin,N. Colonna,M. H. Meaze,S. Marrone,G. Tagliente,R. Terlizzi,F. Belloni,U. Abbondanno,K. Fujii,P. M. Milazzo,C. Moreau,G. 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The decay from excited levels in medium and heavy nuclei can be described in a statisticalapproach by means of Photon Strength Functions and Level Density distributions. The study of electromagnetic cascades following neutron capture based on the use of high eciency detectors has been shown to be well suited for probing the properties of the Photon Strength Function of heavy (high level density) and/or radioactive (high background) nuclei. In this work we have investigated for the first time the validity of the recommended PSF of actinides, in particular ^(235)U, ^(238)Np and ^(241)Pu. Our study includes the search for resonance structures in the PSF below S_n and draws conclusions regarding their existence and their characteristics in terms of energy, width and electromagnetic nature.
High-energy Neutron-induced Fission Cross Sections of Natural Lead and Bismuth-209
D. Tarrio,L. Tassan-Got,L. Audouin,B. Berthier,L. Ferrant,S. Isaev,C. Le Naour,C. Stephan,D. Trubert,S. David,I. Duran,C. Paradela,H. Alvarez-Pol,U. Abbondanno,K. Fujii,P. M. Milazzo,C. Moreau,G. Aert 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The CERN Neutron Time-Of-Flight (n_TOF) facility is well suited to measure small neutron-induced fission cross sections, as those of subactinides. The cross section ratios of ^(nat)Pb and ^(209)Bi relative to ^(235)U and ^(238)U were measured using PPAC detectors. The fragment coincidence method allows to unambiguously identify the fission events. The present experiment provides the first results for neutron-induced fission up to 1 GeV for ^(nat)Pb and ^(209)Bi. A good agreement with previous experimental data below 200 MeV is shown. The comparison with proton-induced fission indicates that the limiting regime where neutron-induced and proton-induced fission reach equal cross section is close to 1 GeV.
A COOPERATIVE CONTROL FOR CAR SUSPENSION AND BRAKE SYSTEMS
C. NOUILLANT,F. ASSADIAN,X. MOREAU,A. OUSTALOUP 한국자동차공학회 2002 International journal of automotive technology Vol.3 No.4
Mechatronic subsystems are more and more developed in automotive industries. To enhance the local controls performances, a cooperative control between ABS and Suspension systems is proposed. The respective controls are first designed separately with their dedicated models. Then a hybrid hierarchical architecture is developed. The advantage of this architecture is discussed through vehicle performance with simulation results.<br/>
A COOPERATIVE CONTROL FOR CAR SUSPENSION AND BRAKE SYSTEMS
Nouillant, C.,Assadian, F.,Moreau, X.,Oustaloup, A. The Korean Society of Automotive Engineers 2002 International journal of automotive technology Vol.3 No.4
Mechatronic subsystems are more and more developed in automotive industries. To enhance the local controls performances, a cooperative control between ABS and Suspension systems is proposed. The respective controls are first designed separately with their dedicated models. Then a hybrid hierarchical architecture is developed. The advantage of this architecture is discussed through vehicle performance with simulation results.
An eight-user UMTS channel unit Processor for 3GPP base station applications
Prokop, T.,Thomas, C.,Bickerstaff, M.,Niemasz, J.,Bernadac, P.,Saintot, P.,Laufer, R.,Bescher, D.,Michel, R.,Walker, B.,Derriennic, F.,Burban, N.,Le Pape, E.,Moreau, J.P.,Cha, I.,Angioni, S.,Mhirsi, K IEEE 2004 IEEE journal of solid-state circuits Vol.39 No.9
We present a multi-user W-CDMA baseband channel unit processor for cellular base station applications. The ASIC is compliant with the 3GPP/UMTS standard and exceeds 3GPP minimum requirements for high-speed data by 2.2-6.2 dB. It supports up to eight users simultaneously, with a mix of voice and data services and a maximum uplink data rate of 384 kb/s and maximum downlink data rate of 2 Mb/s. The ASIC implements preamble detection, searching, demodulation RAKE-finger processing, channel coding/decoding for voice and data services, and transmission functions. It is coupled to a DSP to form a complete channel element for eight users.