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Revista Mexicana de Física
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  • Detección y estudio de fotones producidos en Aluminio por incidencia de rayos cósmicos

    Noemí Moreno, Julián Félix
    020802 1–13
    2023-03-01
    Abstract:

    Understanding the interaction between particles and matter is important for the advancement of new detection and particles properties measurement techniques. The result of interaction processes between incident particle and detection material is the production of photons, ions or both. The photon production in metal plaques due to cosmic rays incidence has not been reported to date. We planned, designed, built, characterized and operated an experimental system based on 10 × 10 cm Aluminium plates of various thicknesses and the photodiode Hamamatsu S12572-100P with which we show evidences of photon production in Aluminium due to cosmic rays incidence. We detected signals between violet and infrared with a minimum of dark counts, with approximately the same intensity, the same proportion between the different colors, and we show that they have characteristics that we associate with photons: absorption, reflection, refraction, dispersion and polarization, then we concluded that the detected signals must be produced by photons. The photons are produced inside the material by the incidence of cosmic rays. We observed that the greater the thickness of Aluminium traversed the greater the number of photons produced, in concordance with the very well known result that the greater the thickness of Aluminium traversed by the particle the greater the deposited energy. Some applications of this phenomenon are elementary particles detection, identification of materials, study of cosmic rays, study of ionizing radiation, etc. We present technical details of the experimental system, the physical results obtained, and outline possible explanations of this phenomenon.

     

    El entendimiento de la interacción entre partículas y la materia es importante para el avance de nuevas técnicas de detección y medición de propiedades de las partículas. El resultado de los procesos de interacción partícula incidente y material de detección es la producción de fotones, de iones, o de ambos. A la fecha no se ha reportado la producción de fotones en placas metálicas por incidencia de rayos cósmicos. Planeamos, diseñamos, construimos, caracterizamos y operamos un sistema experimental, basado en placas de Aluminio de 10cm x 10cm de varios espesores y el fotodiodo Hamamatsu S12572-100P, con el que mostramos evidencias de la producción de fotones en Aluminio por incidencia de rayos cósmicos. Detectamos señales entre el violeta e infrarrojo, con un mínimo de cuentas oscuras, con aproximadamente la misma intensidad, la misma proporción, entre los diferentes colores, y mostramos que tienen características que asociamos a los fotones: absorción, reflexión, refracción, dispersión, y polarización, por lo que concluimos que deben de ser fotones las señales detectadas. Los fotones se producen en el interior del material por incidencia de rayos cósmicos. Observamos que a mayor espesor de Aluminio atravesado mayor número de fotones producidos, en concordancia con el resultado conocido que a mayor espesor de aluminio atravesado por la partícula mayor energía depositada. Algunas aplicaciones de este fenómeno son detección de partículas elementales, identificación de materiales, estudio de rayos cósmicos, estudio de radiación ionizante, etc. Presentamos los detalles técnicos del sistema experimental, los resultados físicos obtenidos, y esbozamos posibles explicaciones de este fenómeno.

    ⬇️ Scroll down to see the full summary
    DOI: https://doi.org/10.31349/RevMexFis.69.020802
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Revista Mexicana de Física (Rev. Mex. Fis.) is a scientific journal published by Sociedad Mexicana de Física, A. C. Publishes original papers of interest to the physical science community. The fundamental purpose of the Revista Mexicana de Física is to publish the research work in physics carried out by the institutions of México and Latin America. 

Editor-in-chief: Ramón Castañeda Priego
Frequency: Bimonthly issues with continuous online publication
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From the Archive

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Announcements

New Issue Vol. 23 No. 2 (2026) July-December Revista Mexicana de Física E

July 7, 2026

We are pleased to announce the publication of the new issue of the Revista Mexicana de Física E, corresponding to Vol. 23 No. 2 (2026)  July-December.

New ISSUE

May 5, 2026

We are pleased to announce the publication of the new issue of the Revista Mexicana de Física, corresponding to Vol. 72 No. 3 2026, May–June.

This issue gathers original contributions across a wide range of areas in physics, including  Condensed Matter, Atomic and Molecular Physics, Fluid Dynamics, Gravitation and Mathematical Physics, High Energy Physics, Instrumentation, Materials Science, Nuclear Physics, and Optics.

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Current Issue Archives Vol. 1 to 63

REVISTA MEXICANA DE FÍSICA, year 72, issue 3, May-June 2026. Scientific journal published by Sociedad Mexicana de Física, A. C. Departamento de Física, 2º Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, Alcaldía Coyacán, C.P. 04510, Ciudad de México. Apartado Postal 70-348. Tels. (+52)55 5622 4946, (+52) 5622 4848, https://rmf.smf.mx/ojs/, e-mail: rmf@ciencias.unam.mx. Chief Editor: Ramón Castañeda Priego. INDAUTOR Certificate of Reserve: 04-2021-102913424600-203, e-ISSN: 2683-2224, granted by Instituto Nacional del Derecho de Autor. Responsible for the last update of this issue, Technical Staff of Sociedad Mexicana de Física, A. C., 2o. Piso, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, C.P. 04510, Coyoacán, CDMX. Date of last modification, May 1st, 2026.

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