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wellerstein's profile
Alex Wellerstein
Alex Wellerstein
Alex Wellerstein
Verified account
@wellerstein

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Alex WellersteinVerified account

@wellerstein

Historian of science, secrecy, and nuclear weapons. Professor of STS at @FollowStevens. UC Berkeley alum with a Harvard PhD. NUKEMAP creator. Coder and web dev.

Hoboken, NJ / NYC
blog.nuclearsecrecy.com
Joined September 2011

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    1. Alex Wellerstein‏Verified account @wellerstein 14 Dec 2012
      • Report Tweet

      @russianforces Pavel, I've found references to the use of Tin-115 in RDS-6s. Do you have any clue why this particular isotope would be used?

      1 reply 0 retweets 0 likes
    2. Pavel Podvig‏ @russianforces 14 Dec 2012
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      Replying to @wellerstein

      @wellerstein Tin-115 was a codename for U-235 at some point.

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      Alex Wellerstein‏Verified account @wellerstein 14 Dec 2012
      • Report Tweet
      Replying to @russianforces

      @russianforces Ah! That would make more sense in context. Is "Ytterbium" code for plutonium?

      3:22 PM - 14 Dec 2012
      1 reply 0 retweets 0 likes
        1. Pavel Podvig‏ @russianforces 14 Dec 2012
          • Report Tweet
          Replying to @wellerstein

          @wellerstein There was a list somewhere. I don't remember Ytterbium though At the Tin-115 time plutonium was Te-120

          0 replies 0 retweets 0 likes
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