E. MORENO-BARBOSA1*, J.E. ESPINOSA-ROSALES1
, J. COTZOMI-PALETA1
,
B DE CELIS-ALONSO1
, M. CRUZ-SÁNCHEZ2
, E. MERLO-JUÁREZ2
, P. TREJOGARCÍA1
, A. LIMA-FLORES1
, R. PALOMINO-MERINO1
1 Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur, Col. San Manuel, Ciudad Universitaria, Puebla, Puebla. C.P. 72570, México.
2 Instituto Nacional de Antropología e Historia , Delegación Puebla, Zona Arqueológica de Cholula, 8 norte núm. 2, colonia centro , San Andrés Cholula, Puebla, C.P. 72760, México
*Email: emoreno@fcfm.buap.mx
1 Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur, Col. San Manuel, Ciudad Universitaria, Puebla, Puebla. C.P. 72570, México.
2 Instituto Nacional de Antropología e Historia , Delegación Puebla, Zona Arqueológica de Cholula, 8 norte núm. 2, colonia centro , San Andrés Cholula, Puebla, C.P. 72760, México
*Email: emoreno@fcfm.buap.mx
Abstract
The pyramid of Cholula was built at the beginning of 100 B.C. and
during of period of 500 years it was finished, had several new constructions,
based on the previous constructions. The primarily material of construction is
the adobe. Early in 1931 archaeological excavations began with the intention
of exploring the interior of the pyramid, excavations were stopped in 1971,
and to date no further excavations have been carried out. This work shows
the first measurements of muons, particles that are very penetrating, these
are generated by primary cosmic rays that was incoming in the atmosphere
and these generates a rain of secondary particles, among them the muons. To
measure this kind of particles was implemented a detector system, it is formed
by a scintillator plastic coupled to a tube photomultiplier; the signals were
acquired by mean of an oscilloscope. The detector was collocated near of
the center of the pyramid; the location belongs to the maxima concentration
in mass over the detector. Graphs of the charge distribution, maximum
amplitude and characteristic rise times of the generated pulses in a plastic
scintillator are shown, this is scintillator was synthesized in the materials
laboratory of the FCFM-BUAP. In addition the optical characterization of
the same was realized.
