1. Center for Integrated Nanotechnologies (CINT) Materials Physics and Applications Division Los Alamos National Laboratory Los Alamos NM 87545 USA
2. Safeguards Science and Technology (NEN‐1) Nuclear Engineering and Nonproliferation Division Los Alamos National Laboratory Los Alamos NM 87545 USA
3. Physics and Chemistry of Materials Group (T‐1) Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA