| 1. |
- Alkhazov, GD, et al.
(författare)
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SPES4-pi: installation for exclusive study of nuclear reactions
- 2005
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 551:2-3, s. 290-311
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Tidskriftsartikel (refereegranskat)abstract
- The paper describes the spectrometric system "SPES4-pi" used at the National Laboratory Saturne (CE Saclay, France) for the exclusive study of the baryon resonance excitation in inelastic alpha and d scattering on the proton, as well as coherent pion production in charge exchange reactions. The system consists of the magnetic spectrometer SPES4 and two wide-aperture position-sensitive detector arrays, equipped with wire chambers and scintillator hodoscopes, installed around a large-gap C-shape dipole magnet.
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| 2. |
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| 3. |
- Murin, Y, et al.
(författare)
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SEE-Related Studies at CELSIUS
- 2005
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Ingår i: Proc. 6th Int. Conf. on Nuclear Physics at Storage Rings (STORI’05), Bonn. ; , s. 153-
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Konferensbidrag (refereegranskat)
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| 4. |
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| 5. |
- Jaderstrom, H., et al.
(författare)
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200 and 300 MeV/nucleon nuclear reactions responsible for single-event effects in microelectronics
- 2008
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Ingår i: Physical Review C. Nuclear Physics. - 0556-2813 .- 1089-490X. ; 77:4, s. 44601-
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Tidskriftsartikel (refereegranskat)abstract
- An experimental study of nuclear reactions between Si-28 nuclei at 200 and 300 MeV/nucleon and hydrogen or deuterium target nuclei was performed at the CELSIUS storage ring in Uppsala, Sweden, to collect information about the reactions responsible for single-event effects in microelectronics. Inclusive data on Si-28 fragmentation, as well as data on correlations between recoils and spectator protons or alpha particles are compared to predictions from the Dubna cascade model and the Japan Atomic Energy Research Institute version of the quantum molecular dynamics model. The comparison shows satisfactory agreement for inclusive data except for He fragments where low-energy sub-barrier fragments and recoiling fragments with very large momenta are produced much more frequently than predicted. The yield of exclusive data are also severely underestimated by the models whereas the charge distributions of recoils in these correlations compare well. The observed enhancement in He emission, which may well be important for the description of single-event effects, is most likely to be attributed to alpha clustering in Si-28 nuclei.
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| 6. |
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| 7. |
- Murin, Yu., et al.
(författare)
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A detector system for studying nuclear reactions relevant to Single Event Effects
- 2007
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576 .- 0167-5087. ; 578:2, s. 385-398
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Tidskriftsartikel (refereegranskat)abstract
- We describe a device to study reactions relevant for the Single Event Effect (SEE) in microelectronics by means of 200A and 300AMeV, inverse kinematics, Si + H and Si + D reactions. The work is focused on the possibility to measure Z = 2-14 projectile fragments as efficiently as possible. During commissioning and first experiments the fourth quadrant of the CELSIUS storage ring acted as a spectrometer to register fragments in two planes of Si strip detectors in the angular region 0 degrees-0.6 degrees. A combination of ring-structured and sector-structured Si strip detector planes operated at angles 0.6 degrees-1.1 degrees. For specific event tagging a Si+ phoswich scintillator wall operated in the range 3.9 degrees-11.7 degrees and Si Delta E-E telescopes of CHICSi type operated at large angles.
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| 8. |
- Danilov, Andrey, 1961, et al.
(författare)
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Nanoelectromechanical switch operating by tunneling of an entire C-60 molecule
- 2008
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Ingår i: Nano Letters. - 1530-6992 .- 1530-6984. ; 8:8, s. 2393-2398
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Tidskriftsartikel (refereegranskat)abstract
- We present a solid state single molecule electronic device where switching between two states with different conductance happens predominantly by tunneling of an entire C-60 molecule. This conclusion is based on a novel statistical analysis of similar to 10(5) switching events. The analysis yields (i) the relative contribution of tunneling, current induced heating and thermal fluctuations to the switching mechanism, (ii) the voltage dependent energy barrier (similar to 100-200 meV) separating the two states of the switch and (iii) the switching attempt frequency, omega(0) corresponding to a 2.8 meV mode, which is most likely rotational.
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| 9. |
- Taylor, M. J., et al.
(författare)
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A New Simulation Package to Model Detector Systems with Fragmentation Reactions and Ion Separators: Application to the LYCCA-0 System
- 2009
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 606:3, s. 589-597
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Tidskriftsartikel (refereegranskat)abstract
- A Monte-Carlo simulation package has been developed to model the response of a detector system for ion identification used in conjunction with ion separators following nuclear reactions. The simulation is written predominantly using the GEANT4 framework but utilises the ion transport code MOCADI for accurate separator and reaction modelling. A novel MOCADI-GEANT4 interface has been developed to utilise the parameter file output option of MOCADI as an event generator for the GEANT4 detector simulation. Test simulation results have been compared with experimental data and excellent agreement was observed. The simulation has successfully been used to model a new particle detection system prototype (Lund-York-Cologne CAlorimeter (LYCCA)-0) and validate a method of ion identification using energy and time-of-flight with this system. (C) 2009 Elsevier B.V. All rights reserved.
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