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title: "Meson Production and Nuclear Fragmentation of Nucleus in the Atmosphere • CBPF Index"
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**Physics Note****Published**

# **Meson Production and Nuclear Fragmentation of Nucleus in the Atmosphere**

**C.E. Navia; R. H. C. Maldonado; H. M. Portella; H.V. Pinto; F. A. Pinto**

1988

[**Download PDF **0.5 MB](https://index.cbpf.br/files/publicacao/6ad2a767639f62b11adbb73c/pdf) [**Contact owner**](mailto:apub@cbpf.br?subject=Meson%20Production%20and%20Nuclear%20Fragmentation%20of%20Nucleus%20in%20the%20Atmosphere)

## **Publication details**

<dl>

<dt>Authors</dt>
<dd>C.E. Navia; R. H. C. Maldonado; H. M. Portella; H.V. Pinto; F. A. Pinto</dd>

<dt>Type</dt>
<dd>Physics Note</dd>

<dt>Status</dt>
<dd>Published</dd>

<dt>Publication date</dt>
<dd>1988</dd>

<dt>Description</dt>
<dd>Propagation of the primary and secondary cosmic ray in the atmosphere is calculated analitically. Two different cases of primary cosmic ray composition are used; the first case concerns the mixed composition of very heavy, heavy, middle, light nuclei and nucleons; and the second case considers only nucleons in the primary cosmic ray flux. The mechanism of multiple meson production is formulated according to the wounded nucleon model for nucleus-nucleus interaction and the scaling model for nucleon-nucleon interaction. The mechanism of nuclei fragmentation is formulated according to the experimental; values of the fragmentation parameters at low energy. The calculated results of the electromagnetic flux are compared with the results of mountain experiments with large scale emulsion chamber and experimental data at airplane altitude. From these comparisons the calculation of electromagnetic flux altitude variation of the first case gives the best fit with experimental data than the second case.</dd>

<dt>Year</dt>
<dd>1988</dd>

<dt>Number</dt>
<dd>CBPF-NF-032/88</dd>

<dt>Linked to a thesis</dt>
<dd>No</dd>

<dt>Linked to a grant</dt>
<dd>No</dd>

</dl>

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