Investigating the invserse square law for gamma radiation

Question 1

how it is measured

Answer 1

geiger-mukller tube

counter

Question 2

proceduire

Answer 2

• measure background count rate without source
• place source 1m from the geiger tube
  
  • mwasured distance between the end of the tube adn the front of the source
• measure number of counts in 60s
  
  • repeat form mean
• repeat measurement for at least six different distnaces

Question 3

safety

Answer 3

• radiation can kill
• keep as far away as possible (at least 30cm) from a lab sources of ionsing radiation
• dont touch use handling tool
• keep sources in lead storage containers, out lab when not in use
• keep source pointed away from body especially eye
• limit the time use of source, return to secure storage as soon as possible
• wear gloves / wash hands after