Il Nuovo Cimento B (1965-1970)

, Volume 63, Issue 2, pp 473–485 | Cite as

A search at the zenith for 200 MHz and 3000 MHz radio emission from extensive air showers

  • W. N. Charman
  • J. V. Jelley


Extensive air showers of energy > 2.1015eV were detected by either Čerenkov night-sky light receivers or by a small array of liquid scintillators. Coincident radio pulses were observed at 200 MHz, the results apparently suggesting an incoherent emission mechanism; only slight evidence was obtained for any corresponding 3000 MHz emission. The results are discussed in terms of possible mechanisms for production by showers of radiation at these frequencies.


Radio Emission Time Base Radio Pulse Liquid Scintillator Large Pulse 
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Поиски в эените радио-иэлучения для 200 MHz и 3000 MHz иэ щироких атмосферных ливней


Детектировались щирокие атмосферные ливни с знергией > 2·105 зВ либо при помоши черенковских приемников иэлучения ночного неба, или при помоши маленькой цепочки жидких сцинтилляторов. Наблюдались совпадаюшие радиоимпульсы при 200 MHz, реэультаты, очевидно, подтверждают некогерентный механиэм иэлучения, только слабое подтверждение было получено для иэлучения, соответствуюшего 3000 MHz. Полученные реэультаты обсуждаются с точки эрения воэможных механиэмов для рождения иэлучения ливнями при зтих частотах.


Si sono rilevati sciami estesi dell’aria di energia > 2·1015 eV o con ricevitori di Čerenkov della luce del cielo notturno oppure o con un piccolo sistema di scintillatori liquidi. Si sono osservati impulsi radio coincidenti a 200 MHz. I risultati apparentemente suggeriscono un meccanismo di emissione incoerente; si è ottenuto solo una debole prova di un’emissione corrispondente di 3000 MHz. Si discutono i risultati in base ai possibili meccanismi per la produzione da parte di sciami di radiazione a queste frequenze.


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Copyright information

© Società Italiana di Fisica 1969

Authors and Affiliations

  • W. N. Charman
    • 1
  • J. V. Jelley
    • 1
  1. 1.Atomic Energy Research Establishment Nuclear Physics DivisionHarwell, Didcot, Berks

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