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Preparation of Boron Trifluoride for Use in Neutron Counters
Boron trifluoride is used as the filling gas in ionization chambers and in proportional counters used for counting neutrons. The predominant reaction in these chambers is the (n-alpha) reaction on B(10) with thermal neutrons. Since the performance of counters filled with BF3 is strongly dependent on the quality of the gas, an understanding of this dependence is helpful. While this subject is by no means completely understood, the following discussion summarizes some general information pertinent to this question.
Neutron Detectors for Scattering Applications
This book covers the most common neutron detectors used in neutron scattering facilities and all of those in use at Oak Ridge National Lab. It starts describing the facilities, instruments and the critical detector parameters needed by various instruments. Then the key components of the 3He-based linear position-sensitive detectors as well as on their electronics, which require particular attention to signal processing and noise reduction, are introduced. One chapter is dedicated to the 3He alternatives where scintillators play a critical role. It also covers emerging neutron detection technologies including semiconductors, vacuum-based devices and their associated readouts, which will be re...
Lepton Physics At Cern And Frascati
This reprint volume is in honour of one of the leaders of Italian high-energy physics, Antonino Zichichi, who is now 65 years old. It covers the first part of his activity: the years 1959-1976, probably the most intense of his scientific career. The volume includes reprints of articles and of some published laboratory reports, documenting the extraordinary constancy of Zichichi in a scientific programme which spanned more than a decade and laid the foundations for the subsequent discovery by M Perl of the heavy lepton, HL (now called τ), first proposed and searched for at CERN and Frascati by Zichichi in the early sixties.
