Re: [NTG-context] Nuclear reactions

Hi List, I am still interested in knowing if there is a good way to do nuclear reactions using \chemical. But I found something that works for my current needs: \define[1]\Sr{\mathord{\rm Sr}__{38}^^{#1}} \define[1]\Xe{\mathord{\rm Xe}__{54}^^{#1}} \define[1]\U{\mathord{\rm U}__{92}^^{#1}} \starttext Reaction: \startformula \U{235} + n \rightarrow \Sr{94} + \Xe{140} + 2n \stopformula \stoptext Since I will be writing many reactions with a dozen or so different atomic symbols, it makes sense to create a command for each atomic symbol that adds the correct atomic number and takes the mass number as an argument. Hope someone else can benefit. I still getting used to ConTeXt's treatment of {…}, which does not appear to be TeX's way. Gavin

On Apr 15, 2023, at 11:19 AM, Gavin wrote:

Hi list,

I’m writing nuclear reactions. When add prescripts to atomic symbols with two letters, (Be, Sr, Xe, etc.) the prescripts split the atoms! (See output below.)

\starttext Text: \lohi[left]{4}{10}Be. Reaction: \startformula {\rm U}^^{235}__{92} + n \rightarrow {\rm Sr}^^{94}__{38} + {\rm Xe}^^{140}__{54} + 2n \stopformula \stoptext

I looked at \chemical and \molecule, but could not find a way to make isotopes with those. Any ideas?

Gavin