| Full text | |
| Author(s): |
Nunes, Matheus C. S.
;
Rodrigues, Miguel L.
;
Silva, Walace J. R.
;
Silva, Ronaldo S.
;
Umisedo, Nancy K.
;
Yoshimura, Elisabeth M.
;
Trindade, Neilo M.
Total Authors: 7
|
| Document type: | Journal article |
| Source: | Applied Radiation and Isotopes; v. 214, p. 9-pg., 2024-09-13. |
| Abstract | |
Thermoluminescence (TL) and Radioluminescence (RL) are widely used in dosimetry applications. We present a custom-built integrated system, designated LUMI22, for measuring TL, TL spectroscopy, RL, and RL as a function of temperature. LUMI22 includes a heating system based on Kanthal (R) A1 alloy (FeCrAl), a microcontroller to regulate the temperature ramps (e.g. 1-5 degrees C/s). To irradiate samples an X-ray tube (Moxtek 50 kV, 50 mu A) is powered, controlled, and monitored by an FTC-200 standard controller. The dose rate at the sample position is 0.43 Gy/min. Light collection includes a Photomultiplier Tube (PMT, Hamamatsu H10493-012:HA, 185-850 nm). Additionally, a miniature fiber optic spectrometer (Ocean Optics, QE65000, range 200-1100 nm) coupled with a 1000 mu m diameter fiber optic (QP1000- 2-UV-VIS) was employed for TL and RL spectroscopy measurements. To assess the functionality of the system, it was used to measure TL and RL from Al2O3:C,Mg, Al2O3:C and TLD-100 phosphors which have been previously well investigated. The measured TL and RL data were well compared to the published ones, confirming the functionality of the system. (AU) | |
| FAPESP's process: | 21/08653-0 - Instrumentation and testing of a low-cost TL/RL system. |
| Grantee: | Neilo Marcos Trindade |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - Brazil |
| FAPESP's process: | 18/05982-0 - R&D&I in radiation metrology in the health area |
| Grantee: | Linda Viola Ehlin Caldas |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 22/14516-8 - Study of mechanisms of luminescence in alexandrite pellets using optically stimulated luminescence |
| Grantee: | Matheus Cavalcanti dos Santos Nunes |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 21/00626-3 - Development of a low cost TL / RL system |
| Grantee: | Walace Júnior Rodrigues da Silva |
| Support Opportunities: | Scholarships in Brazil - Technical Training Program - Technical Training |
| FAPESP's process: | 19/05915-3 - Characterization of minerals for luminescent dosimetry of ionizing radiations |
| Grantee: | Neilo Marcos Trindade |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 21/12758-1 - Development and characterization of an optically stimulated luminescent detector based on natural Brazilian alexandrite |
| Grantee: | Matheus Cavalcanti dos Santos Nunes |
| Support Opportunities: | Scholarships in Brazil - Master |