Years ago, someone created a similar picture with a single atomic nucleus. I'd like to find it again. Normally, nuclear transitions are invisibly-high energie

Years ago, someone created a similar picture with a single atomic nucleus. I'd like to find it again. Normally, nuclear transitions are invisibly-high energies. X-ray and gamma. But a couple of nuclei have multi-step spin isomer decays (or was it shape isomer?). One step of which is visible. So someone trapped and fully stripped a nucleus, and bombarded it to visibility. Naked-eye visibility. And took a picture. Of vacuum vessel window, with a green(?) fluorescence dot. I saw that picture years ago. Likely a cover photo on something. I would very much like to find it again. For use in educational content. A lot of time has been spent looking for it, both by myself, and a couple of MIT science librarians. If anyone has a clue, I'd very much appreciate it. Here is a mockup[1] I gimped for user testing. Why use it in education? To make the concept of atoms more concrete. Atomic electrons are too small (and slow and fragile) to see with your naked eye. But (a couple of) nuclei you can (under hard-to-contrive conditions). Absent concrete, students build their understanding of materials on muddy misconceptions. For example, one failure-mode in teaching high-school stoichiometry, is students not thinking of atoms as real physical objects. And to preempt a common response... one professor complained "you aren't really seeing the nucleus - it's only a diffraction dot"... right before they headed out to a star party, to apparently "not see" stars. ;) [1] http://www.clarifyscience.info/assets/2017-Atoms/assets0/wk/ChamberWindow--fake.jpg http://www.clarifyscience.info/assets/2017-Atoms/assets0/wk/...