111136184
An Improved Control System for Van De Graaff Accelerators
In an effort to improve the energy stability and operating convenience of the Rutgers-Bell FN Tandem, a study has been made of the processes involved in the standard Van de Graaff corona stabilization system. In the light of these observations, a terminal voltage control system has been designed using error signals derived both from the slit system and the capacity pickoff plates. The system operates using either the standard slit system, or the machines' Generating Voltmeter as the terminal voltage reference, switching automatically to the G. V. system when beam is lost for any reason.
121623246
Semiconductor Particle Detectors
The operation, properties, and fabrication of semiconductor detectors are reviewed. Materials other than Ge and Si are mentioned only briefly. The electronics involved in use of semiconductors as particle detectors is discussed. Application and possible applications to the following are summarized: nuclear reaction chargedparticle spectroscopy, particle identification, mosaics and special structures, alpha -particle spectroscopy, fission studies, neutron spectroscopy, BETA spectroscopy, gamma spectroscopy, detection of minimum- ionizing particles, low-temperature physics, space vehicles, industry, and medicine.
122069676
Field theoretic treatment of pi-nuclear scattering
119456310
SHADOWING CORRECTIONS AND THE PRECISE DETERMINATION OF ELECTROWEAK PARAMETERS IN NEUTRINO-NUCLEON SCATTERING
A systematic error in the extraction of sin2θW from nuclear deep inelastic scattering of neutrinos and antineutrinos arises from higher-twist effects arising from nuclear shadowing. We explain that these effects cause a correction to the results of the recently reported significant deviation from the Standard Model that is potentially as large as the deviation claimed, and of a sign that cannot be determined without an extremely careful study of the data set used to model the input parton distribution functions.
121919290
Pion-nucleus charge exchange reactions at low energies
Elastic charge exchange cross sections are calculated using the Kisslinger and Michigan State University potentials. Each is consistent with elastic sccattering data, and predicts observable charge exchange cross sections. However, the charge exchange cross sections obtained by the two models have substantial differences.