Jessica Rehak
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jessica-rehak.bsky.social
Jessica Rehak
@jessica-rehak.bsky.social
23 followers 27 following 33 posts
Nuclear physicist, bay area resident, veteran. PhD UC Berkeley. Opinions my own, unless they're bad. No, even then I suppose.
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jessica-rehak.bsky.social
SEABORG INTENSIFIES
A black and white picture of Glenn Seaborg, co-discoverer of ten elements
September 14, 2026 at 5:37 PM
jessica-rehak.bsky.social
Neutrinoless double beta decay
September 11, 2026 at 4:47 PM
jessica-rehak.bsky.social
please just tell me what this bolt is made of why was it all scanned in such low resolution 🧪
A meme of senor chang from community squinting to read a very small piece of paper. He is labelled "me" and the paper is labeled "cyclotron drawings from 1960"
September 10, 2026 at 9:09 PM
jessica-rehak.bsky.social
Why would they build a cyclotron way up on a hill?!

Oh ok nevermind I get it. 🧪
The view from the 88" cyclotron at Berkeley Lab. Some clouds and fog hang over the san francisco bay area seen from a high elevation. The campanille of Berkeley is to the left, a tree to the right. The bay runs through the middle of the picture with san francisco, the golden gate bridge is visible in the distant right. It is early in the morning, and I think conveys a feeling of coolness, beauty, and scale.
August 13, 2026 at 4:15 PM
jessica-rehak.bsky.social
If you’re ever wondered what $200k of Calcium-48 looks like. Sadly it's not mine it belongs to @lbnlnuclearsci.bsky.social 🧪
A glass vial with a few dark metallic flakes held by a hand on a wooden desk. It is sealed with wax and reads “Isotope Ca-48”
July 9, 2026 at 8:49 PM
jessica-rehak.bsky.social
The 88-inch Cyclotron at LBNL is still looking good after 65 years. @lbnlnuclearsci.bsky.social 🧪
Top: a sepia colored picture of the cyclotron building in 1961. A low office building is in front of a larger square high bay. The building is up in the hills of Berkeley with cars parked outside. Bottom: a color modern photo. The low office building is now two stories, there are large trees growing out front now.
July 9, 2026 at 2:25 PM
jessica-rehak.bsky.social
Due to the normal slightly-buggy kid-remembering of names, my daughter calls this guy General Gordon
A picture of General Greivous from Star Wars Episode 3 and the Clone Wars.
July 8, 2026 at 9:35 PM
jessica-rehak.bsky.social
These old radiation symbols with a slight tilt have a casual vibe that modern ones are missing
A large blue square hanging off of rollers. On it is a small sign that reads RADIATION HAZARD with a rad trefoil slightly tilted to the right.
June 30, 2026 at 10:10 PM