**Acknowledgements**

*Use of Gamma Radiation Techniques in Peaceful Applications*

*Pulse shape (volt-second) characteristic for steel electrodes in γ radiation field [9].*

*Pulse shape (volt-second) characteristic for brass electrodes in γ radiation field [9].*

**228**

**7. Conclusion**

**Figure 14.**

**Figure 13.**

and pure γ radiation.

occasionally exposed to that type of radiation.

In this chapter, the influence of γ radiation on gas-filled surge arrester operation is discussed. An experimental model has been developed that allows easy modification of elements of the system and tests under different operational regimes. The experimental setup has also been used to test commercial GFSA components. An analytical method to describe GFSA pulse shape characteristics using area law has been established. These theoretical and empirical tools were used to measure and analyze the performance of different GFSA components exposed to combine n + γ

The experiments demonstrated that γ radiation improves the performance of GFSA. This effect was observed both in commercial components and the experimental model. The prebreakdown current had increased when GFSA were exposed to γ radiation. Beneficial effect of γ radiation on pulse shape characteristics was determined: due to the reduction of standard deviation, response time of GFSA was improved. These effects were consistent under different insulating gas pressure regimes. Among the metals tested as electrode materials using the model, brass was the best performing one. The effects of γ radiation were lasting only as long as the components were exposed. The performance of GFSA under γ radiation makes them suitable for overvoltage protection of electronic circuitry constantly or

The authors thank the Ministry of Education, Science and Technological Advancement, Republic of Serbia, for supporting the research through projects no. 171007 and 43009.
