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Title of Journal: Nuovo Cim

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Abbravation: Il Nuovo Cimento (1955-1965)

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Società Italiana di Fisica

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1827-6121

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Investigations of bremsstrahlung of electrons in t

Authors: J Benisz Z Chyliński W Wolter
Publish Date: 2007/10/23
Volume: 11, Issue: 4, Pages: 525-
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Abstract

Four high energy ∼ 1012 eV electronphoton cascades have been investigated at the first stage of their development The number and the energy of the electron pairs of the first generation produced on the first radiation length were estimated and compared with the theoretical values calculated on the basis of the theory of Bethe and Heitler On the other hand the same was calculated according to the theories of Landau Pomerančuk and TerMikaelyan which take into account the influence of the medium on the bremsstrahlung of electrons of very high energy The experimental results are in better agreement with the predictions of Landau Pomerančuk and TerMikaelyan than with that of Bethe and Heitler This fact confirms the results obtained earlier in our laboratory and given in a previous paper 1Si sono esaminate quattro cascate elettrofotoniche di alta energia ∼ 1012 eV neI primo stadio del loro sviluppo Il numero e l’energia delle coppie di elettroni della prima generazione prodotte nella prima lunghezza di radiazione sono stati stimati e confrontati coi valori teorici calcolati sulla base della teoria di Bethe e Heitler Le stesse grandezze sono state anche calcolate in base alle teorie di Landau Pomerančuk e TerMikaelyan che tengono conto dell’influenza del mezzo sulla bremsstrahlung di elettroni di altissima energia I risultati sperimentali sono in miglior accordo colle previsioni di Landau Pomerančuk e TerMikaelyan che con quelle di Bethe e Heitler confermando i risultati ottenuti nel nostro laboratorio e comunicati in un precedente lavoro 1

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  4. Remarks on the generators of the SU 3 group
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  13. A novel approach to elementary scattering theory
  14. Compound-nucleus radiative capture cross-section in the mev energy-range and nuclear-level density
  15. Sur le calcul des constantes vibrationnelles de l’oxyde azoteux
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  17. A renormalized, ghost-free lee model
  18. Investigation of the possibility of a π-λ resonance in the case of different parities of λ and ɛ
  19. The high-energy muon flux at sea level obtained from an observation of the burst-size spectrum
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