The flux of the helium component of the primary cosmic radiation at geomagnetic latitude 41‡ N

1956 ◽  
Vol 3 (5) ◽  
pp. 1150-1152 ◽  
Author(s):  
A. De Marco ◽  
A. Milone ◽  
M. Reinharz

1962 ◽  
Vol 40 (9) ◽  
pp. 1049-1055 ◽  
Author(s):  
H. H. Aly

Two values for the flux of the hydrogen component in the primary cosmic radiation have been measured. The first one was over Guam in the Marianas Islands, geomagnetic latitude λ = 0°. The value of the flux was found to be (123 ± 12) hydrogen nuclei/m2 sterad sec. The second measurement was made over Texas, λ = 41 °N., and the value found was (530 ± 53) hydrogen nuclei/m2 sterad sec. The detectors in both cases were stacks of nuclear emulsion exposed at high altitude. The results obtained in this experiment are in good agreement with the values obtained by the other authors using electronic counters flown at the same geomagnetic latitudes.



1958 ◽  
Vol 13 (10) ◽  
pp. 801-808 ◽  
Author(s):  
Wolfgang Püschel

Fragmentation probabilities and interaction mean free paths for the interaction of heavy nuclei (Z > 2) of the primary cosmic radiation with target nuclei of emulsions (Ilford G 5) have been obtained. The experiment has been carried out in Northern Italy, at a geomagnetic latitude of 46° N. The values are in good agreement with those reported previously by Fowler, Hillier, Waddington and Rajopadhye, Waddingto and Cester, Debenedetti, Garelli, Quassiati, Tallone, Vigone.Values are derived for the fragmentation probabilities in air by a geometrical model introduced by Noon and Kaplon.Assigning both to the incident particle and to the target nuclei a radius R = R0 · A⅓, one obtains an effective nuclear radius R0=1,2·10-13 cm.Using our values for the fragmentation probabilities instead of the lower values found in an experiment by KAPLON et al., their ratio for the fluxes of L-nuclei to M-nuclei at the top of the atmosphere is increased from 0.46 to about 0.80.





1963 ◽  
Vol 130 (1) ◽  
pp. 362-368 ◽  
Author(s):  
K. A. Neelakantan ◽  
P. G. Shukla


2017 ◽  
Vol 145 ◽  
pp. 03003
Author(s):  
Victor Pavlyuchenko ◽  
Romen Martirosov ◽  
Natalia Nikolskaya ◽  
Anatoly Erlykin


1947 ◽  
Vol 71 (7) ◽  
pp. 393-398 ◽  
Author(s):  
M. S. Vallarta ◽  
M. L. Perusquía ◽  
J. de Oyarzábal


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