Documents / FOIA release
The National Security Agency sent this FOIA response on 6 September 2019 in case 105997, answering John Greenewald's request of 21 December 2018 for Intellipedia entries on Moscovium, Element 115 and Bob Lazar. NSA released three versions of the Intellipedia page on ununpentium, with some material withheld under FOIA exemptions (b)(3) and (b)(6). The pages cover the synthesis, properties and isotopes of element 115. They say Bob Lazar's account of the element is considered pseudoscience and that no openly available empirical evidence supports his claims.
Jnunpentium - InteUipedia https://intellipedia.intelink.ic.gov/w/index .php?title=Ununpentium&print. .. Doc ill: 6679581 The team reported that they bombarded americium (element 95) I[ II (est.) 1/54085-64-2 1/ with calcium (element 20) to produce four atoms of ununpentium =====::!.!=======:::::!..!::====::!JL!::I (element liS). These atoms, they report, alpha decayed to ununtrium (element 113) in approximately 100 milliseconds. The ununtrium produced then existed for 1.2 seconds before decaying into natural elements. The synthesizing of the element was also reported by scientists of Japan. In May 2006 in the Joint Institute for Nuclear Research the synthesis of this element was confirmed by another method (the chemical identifying on final products of decay of element). Ununpentium is a temporary IUPAC systematic element name. Element liS is also sometimes called eka-bismuth. Chemical Properties For now element liS has only been manufactured in the amount of a few atoms, so the chemistry of element liS has yet to be researched, but chemistry and physics can tell us a lot about what to expect. Although element liS is in the same group as bismuth, its chemistry will probably be strongly altered by relativistic effectsV] One important predicted difference from bismuth is the presence of a stable oxidation state of +J, and a Uup+ ion with a chemistry similar to Tl+. There has been some experimental data for other superheavy elements, such as element 112, which seems to confirm relativistic effects for superheavy elements. Isotopes Ununpentium has no stable isotopes. A standard atomic mass cannot be given. Nuclide Symbol Z(p) N(n) Isotopic Mass (u)[4) Half-Life!S) Nuclear Spin[S\ Excitation Energy 287Uup 115 172 287.19119(85)[6] 32(+155-14) ms 288Uup 115 173 288.19249(92)[6] 87( + 105-30) ms 289uup 115 174 289.19272(11O)l6J 10 s[6J 290Uup 115 175 290.19414( I 06)[6] 10 s[6] 291Uup 115 176 291 .19438(95)16] 1 min[6] In Popular Culture Ununpentium has been theorized to be inside the island of stability. This probably explains why it was mentioned regularly in popular culture, especially in UFO conspiracy theories. The most popular account of element 115, from Bob Lazar, is considered pseudoscience.f7J Although it is reasonable to suppose that element 115 will have unique properties, there is no openly available empirical evidence to back up Lazar's claims . References 20f4 12/2612018 12:48 PM
FOIA release, cited by the archive. The PDF is mirrored here; the original link is above. 16 pages are in the text index: search them above, or from the library's search.