Accession Number : ADA571478


Title :   Accelerated Decay of Radioisotopes


Descriptive Note : Technical rept. Jun 2011-Jun 2012


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Schumer, Joseph W ; Weber, B V ; Zier, J C ; Apruzese, J P ; Seely, J


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA571478


Report Date : Jan 2013


Pagination or Media Count : 22


Abstract : Radioisotopes have energy densities up tole9 J/g, whereas chemical-bonds typically store energies less than 1e4 J/g. Energy density is only a necessary condition for usefulness as an energetic material. Detailed here is the final report of a search for novel mechanisms for the rapid and controllable release of nuclear energy within radioisotopes. In particular, the focus of this work was to theoretically, numerically, and experimentally quantify the cross-sections or nuclear reactions induced by heavyions or energetic neutrons. Radioisotopes were studied which are energy-rich ( le9 J/g) and are more abundant or naturally occurring with half-lives up to billions of years. The nuclear reaction cross sections were quantified by changes in the normal radioactive decay rate (bum-up) or measuring the presence of a disturbed secular equilibrium (enhanced secondary decay).


Descriptors :   *RADIOACTIVE DECAY , *RADIOACTIVE ISOTOPES , BERYLLIUM , DIODES , ELECTRON BEAMS , ENERGY , ENERGY DENSITY , GAMMA RAYS , GERMANIUM , IONS , LEAD(METAL) , LITHIUM , MASS NUMBER , NEUTRONS , NUCLEAR REACTIONS , NUCLEAR RESONANCE , PINCH EFFECT , PLASMAS(PHYSICS) , WATER


Subject Categories : Isotopes
      Radioactiv, Radioactive Wastes & Fission Prod


Distribution Statement : APPROVED FOR PUBLIC RELEASE