A Proposed Focusing Cosmic-Ray Telescope

Details A Proposed Focusing Cosmic-Ray Telescope A Proposed Focusing Cosmic-Ray Telescope

Mar 1947

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1947phrv...71..310h&link_type=abstract

Physical Review, vol. 71, Issue 5, pp. 310-313

Physics

1

Scientific paper

A magnetic lens which will focus charged particles entering its aperture parallel to the axis can be constructed in the form of a toroidal winding. For an air or iron core toroid, the cross section of the winding is parabolic. If partial iron filling is used, trapezoidal or rectangular cross sections may be employed to produce sharp focusing. The focal length is proportional to the particle momentum, and hence a telescope of this type is also a spectrograph. By using coincidence counters and anticoincidence guard counters for observations, a collimating tube effect can be obtained, permitting full use of the properties of the telescope lens without a background due to particles which do not pass through the lens. There are some advantages to an installation in a deep shaft in the earth having two lenses. With such a device charged and uncharged components can be studied separately.

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