Number after a new atom bomb explosive (6)

I believe the answer is:

amatol

I'm a little stuck... Click here to teach me more about this clue!

'bomb explosive' is the definition.
'amatol' can be an answer for 'explosive' (I've seen this in another clue). I am not sure about the 'bomb' bit.

'number after a new atom' is the wordplay.
'number' becomes 'l' (L is an example).
'after' says to put letters next to each other.
'new' is an anagram indicator.
'atom' anagrammed gives 'mato'.
'a'+'mato'='amato'
'l' put after 'amato' is 'AMATOL'.

Can you help me to learn more?

(Another definition for amatol that I've seen is " High explosive - a la tom (anag)".)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.