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#plutonium

11
posts · 30d
7
users
0
posts / day
1.6
posts / user
-100% vs last week

#plutonium is an active hashtag on Bluesky. In the last 30 days, 7 people shared 11 posts with it — around 0 a day. Activity is down 100% versus the previous week, peaking on Aug 24 with 2 posts.

#plutonium posts per day (last 30 days)

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Posts with #plutonium

klstone / Klaus Steinfelder
@klstone.bsky.social
over 2 years ago
#Asse: Dort lagern u.a. 125.727 Fässer mit radioaktiven Abfällen, darunter 104 t #Uran, 81 t #Thorium und 29 kg #Plutonium. Aktuell dringen täglich rund 6.000 Liter Salzwasser in die Kavernen ein... #AtomkraftNeinDanke 1/2 (S+) Die Asse säuft ab
(S+) Asse in Niedersachsen: Wie Wasser alle Hoffnungen im Atommülllager zerstört

www.spiegel.de

(S+) Asse in Niedersachsen: Wie Wasser alle Hoffnungen im Atommülllager zerstört

Im ehemaligen Salzbergwerk Asse in Niedersachsen liegt radioaktiver Müll. Seit Jahrzehnten dringt Wasser ein, jetzt droht es vollzulaufen. Die Betreibergesellschaft will die Hohlräume nach SPIEGEL-Inf...
3 16 40
Janne M. Korhonen
@jmkorhonen.fi
over 1 year ago
The biggest hurdle is obtaining the necessary nuclear material: #plutonium or highly enriched #uranium. As far as I'm aware, no country in the Baltic region has reactors or reprocessing plants suitable for manufacturing weapons grade plutonium in quantity, nor uranium enrichment facilities.
2 3 28
Carl Willis
@carlwillis.bsky.social
almost 2 years ago
This is the only #plutonium powered toy I have ever encountered--an East German spinthariscope from 1957. X-ray spectrometry confirms Pu content, with U L x-rays following Pu alpha decay (and Np L x-rays following Am-241 decay, itself daugher of Pu-241). A clean grade of Pu, too! #NukeSky
A plutonium-powered spinthariscope from East Germany, 1957.
X-ray spectrum obtained with an Ortec GLP thin-window HPGe detector.
1 7 24
Janne M. Korhonen
@jmkorhonen.fi
over 1 year ago
For the graphs below, I calculated an estimate of probable yield of #nuclear weapons using reactor grade #plutonium (RGPu), based on data and equations originating from actual nuclear weapon designers. Especially with #tritium boosting, which is very useful anyway, RGPu should work just fine.
Reactor grade plutonium can be used in nuclear weapons - fission yield as a function of Pu purity Two graphs titled "Reactor grade plutonium can be used in nuclear weapons: fission yield probability as a function of plutonium purity." The two graphs show how the purity of plutonium influences the reliability of a fission warhead. As the share of isotope Pu-240 increases, the probability of yield (power) -reducing”preinitiation” increases. The graph on the left shows how the probability to attain even sub-kiloton yields with the original Manhattan project design, as used in the "Trinity" nuclear test and over Nagasaki, decreases quite rapidly if more than about 10 percent of plutonium is Pu-240. At 20 % Pu-240, the probability to generate at least a kiloton of yield is about 60 %. However, straightforward improvements upon the crude Manhattan Project design increase the probabilities substantially. The graph on the left shows the probabilities with 1950s era weapons designs: even if Pu-240 content is 20 percent, the weapons are about 85 % likely to produce at least one kiloton. Furthermore, if so-called tritium boosting is used, preinitiation essentially ceases to be a problem: tritium fusion ignites if the weapon generates about 0.2 kilotons. The massive neutron flux generated by tritium fusion would fission the plutonium very effectively, enabling yields ranging to tens or even hundreds of kilotons. It should also be remembered that as the destructive effects of all explosions diminish rapidly with distance - to the third power of distance - a weapon that detonates with a yield of one kiloton (equivalent to a THOUSAND TONS of high explosive) produces about 80 percent of the destructive effects of a weapon that yields 20 kilotons. The graphs were calculated by J. M. Korhonen based on data in Gilinsky et al. (2017, 44-45) and Carson Mark (1990). Estimates of Pu used in the 1962 test from Jones (2018). Data for Loviisa spent fuel from Anttila (2005).
2 0 19

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