| Autor: |
Quercia, I. F., Rispoli, B. |
| Zdroj: |
Il Nuovo Cimento; October 1954, Vol. 12 Issue: 4 p490-518, 29p |
| Abstrakt: |
In order to investigate processes of creation of mesons by primary radiation and the hypothetical presence of negative particles in the primary radiation, two experiments have been carried out at high latitude (Rome, 42°) and low latitude (Bombay, 9°): 1) «charge excess experiment»; 2) «absorption spectrum experiment» under water and in the open air. The East-West asymmetry, the latitude effect, the charge excess have been studied as a function of zenithal angle. Some of our conclusions are the following:a) the measured negative excess in the Eastern direction can be explained without introducing the hypothesis of negative primary particles;b) the energy dependence of the positive excess is not in contradiction with Heitler’s theory;c) the latitude effect is about 15% in the vertical direction for mesons of energy greater than 0.5 GeV and seems to increase in the Eastern direction, and to decrease in the Western direction with increase of zenithal angle;d) the ratio between the energy of the created mesons and the energy of the protons is of the order of 0.2. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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