Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    What is the difference between electron-positron annihilation and gamma decay? They both emit gamma rays right?
    Offline

    11
    ReputationRep:
    Electron - positron annihilation produces a gamma ray. A gamma ray "decay" is where a nuclear decay happens to produce a gamma ray. i.e. there is some kind of situation, probably in the nucleus, that produces a gamma ray as part of the product of a decay. The way you worded it, it seems to imply a gamma ray "decayed" which could happen when a positron electron pair is produced.
    • Aston Villa FC Supporter
    Offline

    6
    ReputationRep:
    Aston Villa FC Supporter
    (Original post by mystreet091234)
    What is the difference between electron-positron annihilation and gamma decay? They both emit gamma rays right?
    The other answer posted is correct, but also:

    Annihilation produces two photons while gamma decay only produces one.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 23, 2016
Poll
Cats or dogs?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.