Summary
Experimental results are reported on the photoproduction of stars in photographic emulsions exposed to a high energy bremsstrahlung beam of maximum energies between 500 and 1100 MeV. The cross-sections, per number of equivalent quanta and per photon are calculated. The results are compared with those which can be derived using experimental values of the cross-sections for single and multiple pion photoproduction. Good agreement is found.
Riassunto
Si presentano i risultati ottenuti sulla fotoproduzione di stelle in emulsioni nucleari irraggiate con raggi γ di bremsstrahlung di energia massima compresa tra 500 e 1 100 MeV. Vengono calcolate le sezioni d’urto per quanto equivalente e per fotone. I risultati vengono confrontati con quelli di precedenti autori ad energie inferiori e con quelli deducibili dai valori noti per fotoproduzione singola o multipla di π, e si trova un buon accordo.
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References
R. D. Miller:Phys. Rev.,82, 260 (1951).
S. Kikucki:Phys. Rev.,86, 41 (1952).
E. P. George:Proc. Phys. Soc. (London), A69, 110 (1956).
V. Z. Peterson andC. E. Roos:Phys. Rev.,105, 1620 (1957).
R. R. Wilson:Nucl. Instr.,1, 101 (1957).
G. Diambrini, A. S. Figuera, B. Rispoli andA. Serra: private communication.
R. R. Wilson:Phys. Rev.,86, 125 (1952).
I. Reff:Phys. Rev.,91, 150 (1953).
G. Bernardini:Kiev Conference (1959).
J. M. Sellen, G. Cocconi, V. T. Cocconi andE. L. Hart:Phys. Rev.,113, 1323 (1959).
V. Z. Peterson: private communication.
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Castagnoli, C., Muchnik, M., Ghigo, G. et al. Photostar production between 500 and 1100 MeV. Nuovo Cim 16, 683–689 (1960). https://doi.org/10.1007/BF02859736
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DOI: https://doi.org/10.1007/BF02859736