Letter | Published:

A Method of Recording Coincidences between Geiger Counters

Nature volume 128, page 185 (01 August 1931) | Download Citation



RECENTLY the recording of coincidences between Geiger counters has become of considerable interest, and several experimental arrangements have been described for this purpose.1 A common property of these arrangements is that the resolving power is of nearly the same magnitude as the duration of an impulse from the counter (about 2 × 10-3 sec.). Impulses occurring within a time interval shorter than this are recorded as true coincidences. The method to be described here gives a resolving power about ten times higher; at the same time, it suffers from the disadvantage that the coincidences must be recorded photographically and not by mechanical summation, as is the case with the arrangements mentioned above.

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  1. 1.

    , Zeit.f. Phys., 59, 1 ; 1930. , Nature, 125, 636; 1930. , Naturwiss., 18, 567; 1931.

  2. 2.

    Proc. Roy. Soc., 131, 391 ; 1931.

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  1. Institut for teoretisk Fysik, Copenhagen, June 20.

    • J. C. JACOBSEN


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