# Effects of air pressure changes on gamma linear attenuation coefficient in the air

### Abstract

The measurements of gamma linear attenuation coefficient in the air at variance air pressure has been done. The measurements were performed to determine the effects of air pressure changes on gamma linear attenuation coefficient in the air. The measurements were used Co-60 as the gamma radiation source and LND 72 Geiger-Muller as the radiation detector in a room with 18oC room temperature and 68% air humidity. The linear attenuation coefficient value was calculated according to Lambert-Beer law. From the measurement, we obtained the attenuated gamma intensity in the air at air pressure variation. The unattenuated gamma intensity was determined by making a linear fit function of the attenuated gamma intensity data. From the calculation, It was found that the value of gamma linear attenuation coefficient in the air increases with the increasing of air pressure.

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### References

Buyuk, B., & Tugrul, A.B. (2014). An investigation on gamma attenuation behaviour of titanium diboride reinforced boron carbide–silicon carbide composites. Radiation Physics and Chemistry, 97, 354–359 .

Akkurt, I., & El-Khayatt, A. M. (2013). The effect of barite proportion on neutron and gamma-ray shielding. Annals of Nuclear Energy, 51, 5–9.

Sharaf, J. M., & Hamideen, M. S. (2013). Photon attenuation coefficients and shielding effects of Jordanian building materials. Annals of Nuclear Energy, 62, 50–56.

Földiak, G. (1986). Industrial application of radioisotopes. Amsterdam: Elsevier.

Singh, K. (2002). Gamma-ray attenuation coefficients in bismuth borate glasses. Nuclear Instruments and Methods in Physics Research, B 194, 1–6.

Davis, R. S. (1992). Equation for the determination of the density of moist air. Metrologia, 29, 67–70.

Vernier Software & Technology. (2017). Logger Pro. Retrieved from https://www.vernier.com/products/software/lp/

IAEA (2014). Radiation protection and safety of radiation sources: international basic safety standards. Viena: Austria.

Akkurt, I., Altindag, R., Gunoglu, K., & Sarıkaya, H. (2012). Photon attenuation coefficients of concrete including marble aggregates. Annals of Nuclear Energy, 43, 56–60.

USNRC (2017). Radiation All Around Us. Retrieved from https://www.nrc.gov/about-nrc/radiation/around-us/uses-radiation.html

Prayudi, T., & Susanto, J. P. (2011). Kualitas debu dalam udara sebagai dampak industri pengecoran logam ceper. Jurnal Teknologi Lingkungan, 2, 168–174.

Singh, V. P., & Badiger, N. M. (2013). Gamma ray and neutron shielding properties of some alloy materials. Annals of Nuclear Energy, 64, 301–310.

Singh, V. P., Medhat, M. E., & Badiger, N. M. (2015). Photon energy absorption coefficients for nuclear track detector susing Geant4 Monte Carlo simulation. Radiation Physics and Chemistry, 106, 83–87.

Elmahroug, Y., Tellili, B., & Souga, C. (2015). Determination of total mass attenuation coefficients, effective atomic numbers and electron densities for different shielding materials. Annals of Nuclear Energy, 75, 268–274.

*Journal of Science & Science Education*,

*1*(2), 55-61. Retrieved from http://ejournal.uksw.edu/josse/article/view/1462