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What is Name the test and is used for and explain in detail?
Neutron activation analysis (NAA) : This is a test used for estimation of distance of firing and confirming the hands of those suspected of firing a firearm. The test can detect barium, copper, antimony, etc. from the primer present in the firearm discharge residue, which are activated in a nuclear reactor and then identified by the gamma ray spectrometer. Other tests are: * Dermal nitrate test* Harrison and gilroy test* Neutron activation analysis (NAA)* Image analysis of gunshot residue (IA GSR)* Sodium rhodizonate test