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[en] The present paper is a summary of the test measurements carried out using new 130 mm diameter fast photomultiplier tubes manufactured by Philips (France), EMI (England) and Hamamatsu (Japan), along with a comparison to the results obtained with the well known XP 2041 Philips model. These tubes will be used in large size neutron detectors
[en] The long history of the research concerning the possible existence of bound or resonant states in light multineutron systems, essentially n and n, is reviewed. Both the experimental and the theoretical points of view have been considered, with the aim of showing a clear picture of all the different detection and calculation techniques that have been used, with particular emphasis in the issues that have been found. Finally, some aspects of the present and future research in this field are discussed.
[en] The PowerPoint presentation was organized into the following areas: Driving forces behind research in semiconductor neutron devices; The (sup 3)He shortage crisis; Alternative detectors for neutron; Semiconductor diodes coated with boron; Perforated semiconductors for neutron detection; and, Three dimensional pillar and trench structured semiconductors.
[en] The cathode-anode combination of a proportional counter of the charge-multiplication type contains an anode wire in the shape of a loop which is electrically open and freely moveable within the enclosure constituted by the cathode. The loop can also be partially imbedded in the insulating holder-block. This can be applied to neutron counters in a gaseous atmosphere
[fr]L'ensemble cathode-anode d'un compteur proportionnel du type a multiplication de charges comprend un fil d'anode forme en boucle non fermee electriquement. La boucle peut rester totalement libre dans l'enceinte formee par la cathode. Elle peut aussi partiellement etre enrobee dans le support isolant. Ceci est applicable aux compteurs de neutrons en atmosphere gazeuse
[en] In the present article we discuss a new class of scintillation materials that are prospective for application in high energy physics experiments and for detection of neutrons in a wide energy range.(authors)