| Texto completo | |
| Autor(es): |
Bonifacio, D. A. B.
;
Rodriguez, U. B.
;
Alcantara-Nunez, J.
;
dos Santos, A. D.
;
Carvalho, D. V. S.
;
Murata, H. M.
;
Perotoni, M. B.
;
Moralles, M.
;
Rosezky, M.
Número total de Autores: 9
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Radiation Physics and Chemistry; v. 234, p. 11-pg., 2025-09-01. |
| Resumo | |
This work presents the development and evaluation of the OpenGamma spectrometer, an open-source, compact and cost-effective gamma-ray detection system built on a Raspberry Pi Pico board. Data acquisition was performed using a GAGG scintillation crystal coupled with a Silicon Photomultiplier (SiPM). The background count rate was 5.24 counts per second. The system was evaluated with standard radioactive sources, achieving an energy resolution of 7.6% at 662 keV, which is comparable to other low-cost gamma spectrometers. The energy calibration curve exhibited a slightly quadratic behavior, typical for scintillation detectors. The dead time was estimated at 39.9 +/- 3.9 mu s, reflecting the system's capacity to process signals with minimal loss. The Gamma MCA web application further enhances the usability of the spectrometer by providing a userfriendly interface for data acquisition and analysis. The OpenGamma spectrometer offers a promising solution for applications in education, research, and field deployment. Future work will focus on improving its energy resolution and dead time to expand its use cases. (AU) | |
| Processo FAPESP: | 23/00079-8 - Desenvolvimento de um identificador de radionuclídeos baseado em espectroscopia nuclear e técnicas de aprendizado de máquina |
| Beneficiário: | Ubaldo Baños Rodríguez |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisa Inovativa em Pequenas Empresas - PIPE |