A Prolate Spheroidal Field Magnetic Spectrometer with Source near the Equatorial Plane
P R Evans; N J Freeman; G K McGinty; B H Armitage; H O W Richardson; P R Evans; Bedford College, University of London; N J Freeman; Bedford College, University of London; G K McGinty; Bedford College, University of London; B H Armitage; Bedford College, University of London; H O W Richardson; Bedford College, University of London
Журнал:
Proceedings of the Physical Society
Дата:
1958-12-01
Аннотация:
A prolate spheroidal field β-spectrometer is described in which the source and detector are located on the same side of the focal ring slit. The trajectories reach distances of up to 38 cm from the axis and the ring slit has a radius of 33 cm. The relation between the resolution and transmission has been measured for four source diameters. Using a scintillation detector of 1.85 cm diameter and 1 cm length, a resolution W of 1.28% at a transmission T of 1% of 4π has been found for a source of 1 cm diameter. For a 1 mm source the measured value range from W=0.4% at T=0.8% to W=1.52% at T=5.2%.
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