Zobrazeno 1 - 10
of 17
pro vyhledávání: '"H. M. Portella"'
Publikováno v:
Brazilian Journal of Physics v.37 n.2a 2007
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
Brazilian Journal of Physics, Volume: 37, Issue: 2a, Pages: 419-424, Published: JUN 2007
Brazilian Journal of Physics
Sociedade Brasileira de Física (SBF)
instacron:SBF
Brazilian Journal of Physics, Volume: 37, Issue: 2a, Pages: 419-424, Published: JUN 2007
Hadron energy spectra induced by one-single nucleon are obtained solving diffusion equations by the method of characteristics. Our solutions are a generalization of earlier papers that allow us to calculate hadron fluxes including the energy dependen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef6be72ac32c6fa0644f56ff47e2e96b
https://doi.org/10.1590/s0103-97332007000300012
https://doi.org/10.1590/s0103-97332007000300012
Publikováno v:
International Journal of Modern Physics A. 21:281-296
The vertical muon charge ratio generated from hadron showers in the earth's atmosphere is obtained accurately in the energy range from a few GeV to several TeV. To solve the hadron diffusion equations we apply the analytical method based on depth-lik
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b439954096959d9a4d9cf4dc5e35644
https://doi.org/10.1142/s0217751x06028953
https://doi.org/10.1142/s0217751x06028953
Publikováno v:
International Journal of Modern Physics A. 19:3583-3593
Atmospheric diffusion of high energy cosmic rays is studied analytically and the obtained integral electromagnetic fluxes are compared with the data measured by emulsion chamber detectors at mountain altitudes. We find a good consistency between them
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbed226005e9cf727e49f3cec1cae120
https://doi.org/10.1142/s0217751x04019536
https://doi.org/10.1142/s0217751x04019536
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 28:415-425
Hadron diffusion equations are solved using an alternative analytical method based on depth-like ordered exponential operators, similar to those used by Feynman. With this method, these equations are solvable for any form of the primary spectrum (an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c6d70a52fa09d18857a0db23b1ad5c1
https://doi.org/10.1088/0954-3899/28/3/305
https://doi.org/10.1088/0954-3899/28/3/305
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 27:191-201
The diffusion equation of cosmic-ray nucleons is exactly integrated using the successive approximation method for a general distribution of the primary component, and taking into account the rising nucleon-air cross sections with energy. The interact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c203d09c3dd9c61711a88c0fe7987e32
https://doi.org/10.1088/0954-3899/27/2/305
https://doi.org/10.1088/0954-3899/27/2/305
Publikováno v:
Journal of Physics A: Mathematical and General. 31:6861-6872
We solve the one-dimensional diffusion equation of nucleons and mesons in the atmosphere using the semigroup theory. We show that the general solutions become simplified expressions when we assume a power-law dependence on energy for the p-air inelas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::107b7fd8ffb488f754628cd24fdfae25
https://doi.org/10.1088/0305-4470/31/32/010
https://doi.org/10.1088/0305-4470/31/32/010
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 21:101-120
We have studied some properties of the secondary particles in p-p interactions which are obtained on the basis of the quark gluon string model. This model is tuned with FNAL and ISR data at 20 GeV. The rise of the predicted inelastic cross section ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bb3252a0cc76c814e9a14683a5c9027
https://doi.org/10.1088/0954-3899/21/1/011
https://doi.org/10.1088/0954-3899/21/1/011
Publikováno v:
Journal of Physics A: Mathematical and General. 27:539-545
The integro-differential equations which describe diffusion of the hadronic component in the atmosphere are exactly solved by means of the successive approximation method. The numbers of muons and neutrinos produced are derived from the hadron fluxes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74c1f4877cae07f07e42de056faa82ed
https://doi.org/10.1088/0305-4470/27/2/035
https://doi.org/10.1088/0305-4470/27/2/035
Publikováno v:
Il Nuovo Cimento A. 104:1535-1544
In this work we use two differents procedures for mini-jet identification in cosmic-ray particle interaction with carbon target chamber (C-jets) observed by Brazil-Japan Collaboration. These events concern the overlapping energy region with CERN and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed666d77ad35089af1177dcbf2ec934d
https://doi.org/10.1007/bf02817436
https://doi.org/10.1007/bf02817436
A photodensitometric method for determining the structure of cosmic ray showers in emulsion chambers
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 51:182-186
We describe a photodensitometric method for the study of the longitudinal and lateral development, as well as the energy determination, of high energy showers in an emulsion chamber. These showers are produced by the nuclear interaction of cosmic ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de3d269bdc55b574882756c0a37befe9
https://doi.org/10.1016/0168-583x(90)90520-5
https://doi.org/10.1016/0168-583x(90)90520-5