Boom is a version of colapse, a code which was transmitted to me by Itamar Lichtenstadt while I worked at the University of Texas at Austin in Craig Wheeler's supernova group. I have very little information about what the 1-d code was like before the mid-1990's, so I'll let other people fill in the history rather than say something incorrect.

The code contains a number of enhancements which I added while a Ph.D. student. These included

• mu and tau neutrinos
• an adaptative mesh scheme
• a crude convective algorithm which was the topic of my dissertation

There were a number of motivations for releasing it on the net. One of the chief one is that in talking with a graduate student who was using the code for current research, I noticed that it is very easy for information about these sorts of codes to get lost, and that in order to run these sorts of codes, you need all sorts of obscure knowledge.