Design and construction of a proportional gas flow meter with application in Mössbauer spectroscopy


Authors

  • Juan Marcos Marín Ramirez Universidad de Antioquia
  • Luis Alberto Cáceres Díaz Centro de Tecnología Avanzada CIATEQ A.C.
  • Yebrail Antonio Rojas Martínez Universidad del Tolima
  • Jaime Alberto Osorio Vélez Universidad de Antioquía
  • Milton Humberto Medina Barreto Universidad Tecnológica de Pereira
  • Beatriz Cruz Muñoz Universidad Tecnológica de Pereira

DOI:

https://doi.org/10.22517/23447214.18141

Keywords:

Mössbauer spectroscopy, internal conversion electron, nuclear instrumentation

Abstract

The design, construction and operation parameters of a gas flow proportional counter are presented in order to implement the integral conversion electron mössbauer spectroscopy technique (ICEMS). The detector works with the support of a multi-channel detection system and a source of highenergy radiation of 57Co. A constant gas flow of a mixture of 5% CH4 in He was used as a multiplier gas, which increased the signal intensity, and protected the sample´s surface of electric shocks. An internal filter for low energy X-rays was considered during the design to achieve a lower background noise and optimize the volume of gas consumed. With this built-in ICEMS detector it is feasible to characterize efficiently the magnetic properties and oxidation states (hyperfine interactions) of both bulk materials and thin films. The calibration of the device was performed by using an iron sample synthesized by powder metallurgy. It was successfully identified the presence of a distinctive sextet of the α-Fe phase with a hyperfine field of 330 kOe and an isomer shift of 0.312 mm / s. The great usefulness of the equipment was verified by solving the magnetic hyperfine interactions of the Mössbauer spectrum associated to a commercial stainless-steel washer.

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Author Biographies

Juan Marcos Marín Ramirez, Universidad de Antioquia

Estudiante de doctorado

Luis Alberto Cáceres Díaz, Centro de Tecnología Avanzada CIATEQ A.C.

Investigador - Cátedras CONACyT

Yebrail Antonio Rojas Martínez, Universidad del Tolima

Docente

Jaime Alberto Osorio Vélez, Universidad de Antioquía

Docente

Milton Humberto Medina Barreto, Universidad Tecnológica de Pereira

Docente - Departamento de Física

Beatriz Cruz Muñoz, Universidad Tecnológica de Pereira

Docente - Departamento de Física

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Published

2018-09-30

How to Cite

Marín Ramirez, J. M., Cáceres Díaz, L. A., Rojas Martínez, Y. A., Osorio Vélez, J. A., Medina Barreto, M. H., & Cruz Muñoz, B. (2018). Design and construction of a proportional gas flow meter with application in Mössbauer spectroscopy. Scientia Et Technica, 23(3), 406–411. https://doi.org/10.22517/23447214.18141

Issue

Section

Ciencias Básicas